diff --git a/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java b/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java
index f8c16a1..010a3d4 100644
--- a/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java
@@ -90,7 +90,7 @@
             FastPairAntispoofkeyDeviceMetadataRequestParcel requestParcel =
                     new FastPairAntispoofkeyDeviceMetadataRequestParcel();
             requestParcel.modelId = modelId;
-            return Utils.convertFastPairAntispoofkeyDeviceMetadataToGetObservedDeviceResponse(
+            return Utils.convertToGetObservedDeviceResponse(
                     mProxyFastPairDataProvider
                             .loadFastPairAntispoofkeyDeviceMetadata(requestParcel));
         }
@@ -125,8 +125,7 @@
             requestParcel.account = account;
             requestParcel.requestType = FastPairDataProviderBase.MANAGE_REQUEST_ADD;
             requestParcel.accountKeyDeviceMetadata =
-                    Utils.convertFastPairUploadInfoToFastPairAccountKeyDeviceMetadata(
-                            uploadInfo);
+                    Utils.convertToFastPairAccountKeyDeviceMetadata(uploadInfo);
             mProxyFastPairDataProvider.manageFastPairAccountDevice(requestParcel);
         }
         throw new IllegalStateException("No ProxyFastPairDataProvider yet constructed");
@@ -151,7 +150,7 @@
             FastPairAccountDevicesMetadataRequestParcel requestParcel =
                     new FastPairAccountDevicesMetadataRequestParcel();
             requestParcel.account = account;
-            return Utils.convertFastPairAccountKeyDevicesMetadataToFastPairDevicesWithAccountKey(
+            return Utils.convertToFastPairDevicesWithAccountKey(
                     mProxyFastPairDataProvider.loadFastPairAccountDevicesMetadata(requestParcel));
         }
         throw new IllegalStateException("No ProxyFastPairDataProvider yet constructed");
@@ -166,7 +165,7 @@
         if (mProxyFastPairDataProvider != null) {
             FastPairEligibleAccountsRequestParcel requestParcel =
                     new FastPairEligibleAccountsRequestParcel();
-            return Utils.convertFastPairEligibleAccountsToAccountList(
+            return Utils.convertToAccountList(
                     mProxyFastPairDataProvider.loadFastPairEligibleAccounts(requestParcel));
         }
         throw new IllegalStateException("No ProxyFastPairDataProvider yet constructed");
diff --git a/nearby/service/java/com/android/server/nearby/provider/Utils.java b/nearby/service/java/com/android/server/nearby/provider/Utils.java
index 3aceb7d..b84dfe9 100644
--- a/nearby/service/java/com/android/server/nearby/provider/Utils.java
+++ b/nearby/service/java/com/android/server/nearby/provider/Utils.java
@@ -41,9 +41,8 @@
  */
 class Utils {
 
-    static List<Data.FastPairDeviceWithAccountKey>
-            convertFastPairAccountKeyDevicesMetadataToFastPairDevicesWithAccountKey(
-                    @Nullable FastPairAccountKeyDeviceMetadataParcel[] metadataParcels) {
+    static List<Data.FastPairDeviceWithAccountKey> convertToFastPairDevicesWithAccountKey(
+            @Nullable FastPairAccountKeyDeviceMetadataParcel[] metadataParcels) {
         if (metadataParcels == null) {
             return new ArrayList<Data.FastPairDeviceWithAccountKey>(0);
         }
@@ -51,6 +50,9 @@
         List<Data.FastPairDeviceWithAccountKey> fpDeviceList =
                 new ArrayList<>(metadataParcels.length);
         for (FastPairAccountKeyDeviceMetadataParcel metadataParcel : metadataParcels) {
+            if (metadataParcel == null) {
+                continue;
+            }
             Data.FastPairDeviceWithAccountKey.Builder fpDeviceBuilder =
                     Data.FastPairDeviceWithAccountKey.newBuilder();
             if (metadataParcel.accountKey != null) {
@@ -68,15 +70,20 @@
                 if (metadataParcel.discoveryItem.actionUrl != null) {
                     storedDiscoveryItemBuilder.setActionUrl(metadataParcel.discoveryItem.actionUrl);
                 }
-                storedDiscoveryItemBuilder.setActionUrlType(
-                        Cache.ResolvedUrlType.forNumber(
-                                metadataParcel.discoveryItem.actionUrlType));
+                Cache.ResolvedUrlType urlType = Cache.ResolvedUrlType.forNumber(
+                        metadataParcel.discoveryItem.actionUrlType);
+                if (urlType != null) {
+                    storedDiscoveryItemBuilder.setActionUrlType(urlType);
+                }
                 if (metadataParcel.discoveryItem.appName != null) {
                     storedDiscoveryItemBuilder.setAppName(metadataParcel.discoveryItem.appName);
                 }
-                storedDiscoveryItemBuilder.setAttachmentType(
+                Cache.DiscoveryAttachmentType attachmentType =
                         Cache.DiscoveryAttachmentType.forNumber(
-                                metadataParcel.discoveryItem.attachmentType));
+                                metadataParcel.discoveryItem.attachmentType);
+                if (attachmentType != null) {
+                    storedDiscoveryItemBuilder.setAttachmentType(attachmentType);
+                }
                 if (metadataParcel.discoveryItem.authenticationPublicKeySecp256r1 != null) {
                     storedDiscoveryItemBuilder.setAuthenticationPublicKeySecp256R1(
                             ByteString.copyFrom(
@@ -86,9 +93,12 @@
                     storedDiscoveryItemBuilder.setBleRecordBytes(
                             ByteString.copyFrom(metadataParcel.discoveryItem.bleRecordBytes));
                 }
-                storedDiscoveryItemBuilder.setDebugCategory(
+                Cache.StoredDiscoveryItem.DebugMessageCategory debugMessageCategory =
                         Cache.StoredDiscoveryItem.DebugMessageCategory.forNumber(
-                                metadataParcel.discoveryItem.debugCategory));
+                                metadataParcel.discoveryItem.debugCategory);
+                if (debugMessageCategory != null) {
+                    storedDiscoveryItemBuilder.setDebugCategory(debugMessageCategory);
+                }
                 if (metadataParcel.discoveryItem.debugMessage != null) {
                     storedDiscoveryItemBuilder.setDebugMessage(
                             metadataParcel.discoveryItem.debugMessage);
@@ -131,9 +141,12 @@
                 }
                 storedDiscoveryItemBuilder.setLastObservationTimestampMillis(
                         metadataParcel.discoveryItem.lastObservationTimestampMillis);
-                storedDiscoveryItemBuilder.setLastUserExperience(
+                Cache.StoredDiscoveryItem.ExperienceType experienceType =
                         Cache.StoredDiscoveryItem.ExperienceType.forNumber(
-                                metadataParcel.discoveryItem.lastUserExperience));
+                                metadataParcel.discoveryItem.lastUserExperience);
+                if (experienceType != null) {
+                    storedDiscoveryItemBuilder.setLastUserExperience(experienceType);
+                }
                 storedDiscoveryItemBuilder.setLostMillis(metadataParcel.discoveryItem.lostMillis);
                 if (metadataParcel.discoveryItem.macAddress != null) {
                     storedDiscoveryItemBuilder.setMacAddress(
@@ -146,9 +159,12 @@
                 storedDiscoveryItemBuilder.setPendingAppInstallTimestampMillis(
                         metadataParcel.discoveryItem.pendingAppInstallTimestampMillis);
                 storedDiscoveryItemBuilder.setRssi(metadataParcel.discoveryItem.rssi);
-                storedDiscoveryItemBuilder.setState(
+                Cache.StoredDiscoveryItem.State state =
                         Cache.StoredDiscoveryItem.State.forNumber(
-                                metadataParcel.discoveryItem.state));
+                                metadataParcel.discoveryItem.state);
+                if (state != null) {
+                    storedDiscoveryItemBuilder.setState(state);
+                }
                 if (metadataParcel.discoveryItem.title != null) {
                     storedDiscoveryItemBuilder.setTitle(metadataParcel.discoveryItem.title);
                 }
@@ -156,8 +172,11 @@
                     storedDiscoveryItemBuilder.setTriggerId(metadataParcel.discoveryItem.triggerId);
                 }
                 storedDiscoveryItemBuilder.setTxPower(metadataParcel.discoveryItem.txPower);
-                storedDiscoveryItemBuilder.setType(
-                        Cache.NearbyType.forNumber(metadataParcel.discoveryItem.type));
+                Cache.NearbyType type =
+                        Cache.NearbyType.forNumber(metadataParcel.discoveryItem.type);
+                if (type != null) {
+                    storedDiscoveryItemBuilder.setType(type);
+                }
             }
             if (metadataParcel.metadata != null) {
                 FastPairStrings.Builder stringsBuilder = FastPairStrings.newBuilder();
@@ -250,22 +269,13 @@
                             metadataParcel.metadata.trueWirelessImageUrlRightBud);
                 }
                 fpInformationBuilder.setTrueWirelessImages(imagesBuilder.build());
-                fpInformationBuilder.setDeviceType(
-                        Rpcs.DeviceType.forNumber(metadataParcel.metadata.deviceType));
+                Rpcs.DeviceType deviceType =
+                        Rpcs.DeviceType.forNumber(metadataParcel.metadata.deviceType);
+                if (deviceType != null) {
+                    fpInformationBuilder.setDeviceType(deviceType);
+                }
 
                 storedDiscoveryItemBuilder.setFastPairInformation(fpInformationBuilder.build());
-                storedDiscoveryItemBuilder.setTxPower(metadataParcel.metadata.bleTxPower);
-
-                if (metadataParcel.metadata.image != null) {
-                    storedDiscoveryItemBuilder.setIconPng(
-                            ByteString.copyFrom(metadataParcel.metadata.image));
-                }
-                if (metadataParcel.metadata.imageUrl != null) {
-                    storedDiscoveryItemBuilder.setIconFifeUrl(metadataParcel.metadata.imageUrl);
-                }
-                if (metadataParcel.metadata.intentUri != null) {
-                    storedDiscoveryItemBuilder.setActionUrl(metadataParcel.metadata.intentUri);
-                }
             }
             fpDeviceBuilder.setDiscoveryItem(storedDiscoveryItemBuilder.build());
             fpDeviceList.add(fpDeviceBuilder.build());
@@ -273,24 +283,22 @@
         return fpDeviceList;
     }
 
-    static List<Account> convertFastPairEligibleAccountsToAccountList(
+    static List<Account> convertToAccountList(
             @Nullable FastPairEligibleAccountParcel[] accountParcels) {
         if (accountParcels == null) {
             return new ArrayList<Account>(0);
         }
         List<Account> accounts = new ArrayList<Account>(accountParcels.length);
         for (FastPairEligibleAccountParcel parcel : accountParcels) {
-            accounts.add(parcel.account);
+            if (parcel != null && parcel.account != null) {
+                accounts.add(parcel.account);
+            }
         }
         return accounts;
     }
 
-    static @Nullable Rpcs.GetObservedDeviceResponse
-            convertFastPairAntispoofkeyDeviceMetadataToGetObservedDeviceResponse(
-                    @Nullable FastPairAntispoofkeyDeviceMetadataParcel metadata) {
-        if (metadata == null) {
-            return null;
-        }
+    private static @Nullable Rpcs.Device convertToDevice(
+            FastPairAntispoofkeyDeviceMetadataParcel metadata) {
 
         Rpcs.Device.Builder deviceBuilder = Rpcs.Device.newBuilder();
         if (metadata.antiSpoofPublicKey != null) {
@@ -320,92 +328,185 @@
             if (metadata.deviceMetadata.name != null) {
                 deviceBuilder.setName(metadata.deviceMetadata.name);
             }
+            Rpcs.DeviceType deviceType =
+                    Rpcs.DeviceType.forNumber(metadata.deviceMetadata.deviceType);
+            if (deviceType != null) {
+                deviceBuilder.setDeviceType(deviceType);
+            }
             deviceBuilder.setBleTxPower(metadata.deviceMetadata.bleTxPower)
-                    .setTriggerDistance(metadata.deviceMetadata.triggerDistance)
-                    .setDeviceType(Rpcs.DeviceType.forNumber(metadata.deviceMetadata.deviceType));
+                    .setTriggerDistance(metadata.deviceMetadata.triggerDistance);
         }
 
-        return Rpcs.GetObservedDeviceResponse.newBuilder()
-                .setDevice(deviceBuilder.build())
-                .setImage(ByteString.copyFrom(metadata.deviceMetadata.image))
-                .setStrings(Rpcs.ObservedDeviceStrings.newBuilder()
-                        .setAssistantSetupHalfSheet(metadata.deviceMetadata.assistantSetupHalfSheet)
-                        .setAssistantSetupNotification(
-                                metadata.deviceMetadata.assistantSetupNotification)
-                        .setConfirmPinDescription(metadata.deviceMetadata.confirmPinDescription)
-                        .setConfirmPinTitle(metadata.deviceMetadata.confirmPinTitle)
-                        .setConnectSuccessCompanionAppInstalled(
-                                metadata.deviceMetadata.connectSuccessCompanionAppInstalled)
-                        .setConnectSuccessCompanionAppNotInstalled(
-                                metadata.deviceMetadata.connectSuccessCompanionAppNotInstalled)
-                        .setDownloadCompanionAppDescription(
-                                metadata.deviceMetadata.downloadCompanionAppDescription)
-                        .setFailConnectGoToSettingsDescription(
-                                metadata.deviceMetadata.failConnectGoToSettingsDescription)
-                        .setFastPairTvConnectDeviceNoAccountDescription(
-                                metadata.deviceMetadata.fastPairTvConnectDeviceNoAccountDescription)
-                        .setInitialNotificationDescription(
-                                metadata.deviceMetadata.initialNotificationDescription)
-                        .setInitialNotificationDescriptionNoAccount(
-                                metadata.deviceMetadata.initialNotificationDescriptionNoAccount)
-                        .setInitialPairingDescription(
-                                metadata.deviceMetadata.initialPairingDescription)
-                        .setLocale(metadata.deviceMetadata.locale)
-                        .setOpenCompanionAppDescription(
-                                metadata.deviceMetadata.openCompanionAppDescription)
-                        .setRetroactivePairingDescription(
-                                metadata.deviceMetadata.retroactivePairingDescription)
-                        .setSubsequentPairingDescription(
-                                metadata.deviceMetadata.subsequentPairingDescription)
-                        .setSyncContactsDescription(
-                                metadata.deviceMetadata.syncContactsDescription)
-                        .setSyncContactsTitle(
-                                metadata.deviceMetadata.syncContactsTitle)
-                        .setSyncSmsDescription(
-                                metadata.deviceMetadata.syncSmsDescription)
-                        .setSyncSmsTitle(
-                                metadata.deviceMetadata.syncSmsTitle)
-                        .setUnableToConnectDescription(
-                                metadata.deviceMetadata.unableToConnectDescription)
-                        .setUnableToConnectTitle(
-                                metadata.deviceMetadata.unableToConnectTitle)
-                        .setUpdateCompanionAppDescription(
-                                metadata.deviceMetadata.updateCompanionAppDescription)
-                        .setWaitLaunchCompanionAppDescription(
-                                metadata.deviceMetadata.waitLaunchCompanionAppDescription)
-                        .build())
-                .build();
+        return deviceBuilder.build();
+    }
+
+    private static @Nullable ByteString convertToImage(
+            FastPairAntispoofkeyDeviceMetadataParcel metadata) {
+        if (metadata.deviceMetadata == null || metadata.deviceMetadata.image == null) {
+            return null;
+        }
+
+        return ByteString.copyFrom(metadata.deviceMetadata.image);
+    }
+
+    private static @Nullable Rpcs.ObservedDeviceStrings
+            convertToObservedDeviceStrings(FastPairAntispoofkeyDeviceMetadataParcel metadata) {
+        if (metadata.deviceMetadata == null) {
+            return null;
+        }
+
+        Rpcs.ObservedDeviceStrings.Builder stringsBuilder = Rpcs.ObservedDeviceStrings.newBuilder();
+        if (metadata.deviceMetadata.assistantSetupHalfSheet != null) {
+            stringsBuilder
+                    .setAssistantSetupHalfSheet(metadata.deviceMetadata.assistantSetupHalfSheet);
+        }
+        if (metadata.deviceMetadata.assistantSetupNotification != null) {
+            stringsBuilder.setAssistantSetupNotification(
+                    metadata.deviceMetadata.assistantSetupNotification);
+        }
+        if (metadata.deviceMetadata.confirmPinDescription != null) {
+            stringsBuilder.setConfirmPinDescription(metadata.deviceMetadata.confirmPinDescription);
+        }
+        if (metadata.deviceMetadata.confirmPinTitle != null) {
+            stringsBuilder.setConfirmPinTitle(metadata.deviceMetadata.confirmPinTitle);
+        }
+        if (metadata.deviceMetadata.connectSuccessCompanionAppInstalled != null) {
+            stringsBuilder.setConnectSuccessCompanionAppInstalled(
+                    metadata.deviceMetadata.connectSuccessCompanionAppInstalled);
+        }
+        if (metadata.deviceMetadata.connectSuccessCompanionAppNotInstalled != null) {
+            stringsBuilder.setConnectSuccessCompanionAppNotInstalled(
+                    metadata.deviceMetadata.connectSuccessCompanionAppNotInstalled);
+        }
+        if (metadata.deviceMetadata.downloadCompanionAppDescription != null) {
+            stringsBuilder.setDownloadCompanionAppDescription(
+                    metadata.deviceMetadata.downloadCompanionAppDescription);
+        }
+        if (metadata.deviceMetadata.failConnectGoToSettingsDescription != null) {
+            stringsBuilder.setFailConnectGoToSettingsDescription(
+                    metadata.deviceMetadata.failConnectGoToSettingsDescription);
+        }
+        if (metadata.deviceMetadata.fastPairTvConnectDeviceNoAccountDescription != null) {
+            stringsBuilder.setFastPairTvConnectDeviceNoAccountDescription(
+                    metadata.deviceMetadata.fastPairTvConnectDeviceNoAccountDescription);
+        }
+        if (metadata.deviceMetadata.initialNotificationDescription != null) {
+            stringsBuilder.setInitialNotificationDescription(
+                    metadata.deviceMetadata.initialNotificationDescription);
+        }
+        if (metadata.deviceMetadata.initialNotificationDescriptionNoAccount != null) {
+            stringsBuilder.setInitialNotificationDescriptionNoAccount(
+                    metadata.deviceMetadata.initialNotificationDescriptionNoAccount);
+        }
+        if (metadata.deviceMetadata.initialPairingDescription != null) {
+            stringsBuilder.setInitialPairingDescription(
+                    metadata.deviceMetadata.initialPairingDescription);
+        }
+        if (metadata.deviceMetadata.locale != null) {
+            stringsBuilder.setLocale(metadata.deviceMetadata.locale);
+        }
+        if (metadata.deviceMetadata.openCompanionAppDescription != null) {
+            stringsBuilder.setOpenCompanionAppDescription(
+                    metadata.deviceMetadata.openCompanionAppDescription);
+        }
+        if (metadata.deviceMetadata.retroactivePairingDescription != null) {
+            stringsBuilder.setRetroactivePairingDescription(
+                    metadata.deviceMetadata.retroactivePairingDescription);
+        }
+        if (metadata.deviceMetadata.subsequentPairingDescription != null) {
+            stringsBuilder.setSubsequentPairingDescription(
+                    metadata.deviceMetadata.subsequentPairingDescription);
+        }
+        if (metadata.deviceMetadata.syncContactsDescription != null) {
+            stringsBuilder.setSyncContactsDescription(
+                    metadata.deviceMetadata.syncContactsDescription);
+        }
+        if (metadata.deviceMetadata.syncContactsTitle != null) {
+            stringsBuilder.setSyncContactsTitle(
+                    metadata.deviceMetadata.syncContactsTitle);
+        }
+        if (metadata.deviceMetadata.syncSmsDescription != null) {
+            stringsBuilder.setSyncSmsDescription(
+                    metadata.deviceMetadata.syncSmsDescription);
+        }
+        if (metadata.deviceMetadata.syncSmsTitle != null) {
+            stringsBuilder.setSyncSmsTitle(
+                    metadata.deviceMetadata.syncSmsTitle);
+        }
+        if (metadata.deviceMetadata.unableToConnectDescription != null) {
+            stringsBuilder.setUnableToConnectDescription(
+                    metadata.deviceMetadata.unableToConnectDescription);
+        }
+        if (metadata.deviceMetadata.unableToConnectTitle != null) {
+            stringsBuilder.setUnableToConnectTitle(
+                    metadata.deviceMetadata.unableToConnectTitle);
+        }
+        if (metadata.deviceMetadata.updateCompanionAppDescription != null) {
+            stringsBuilder.setUpdateCompanionAppDescription(
+                    metadata.deviceMetadata.updateCompanionAppDescription);
+        }
+        if (metadata.deviceMetadata.waitLaunchCompanionAppDescription != null) {
+            stringsBuilder.setWaitLaunchCompanionAppDescription(
+                    metadata.deviceMetadata.waitLaunchCompanionAppDescription);
+        }
+
+        return stringsBuilder.build();
+    }
+
+    static @Nullable Rpcs.GetObservedDeviceResponse
+            convertToGetObservedDeviceResponse(
+                    @Nullable FastPairAntispoofkeyDeviceMetadataParcel metadata) {
+        if (metadata == null) {
+            return null;
+        }
+
+        Rpcs.GetObservedDeviceResponse.Builder responseBuilder =
+                Rpcs.GetObservedDeviceResponse.newBuilder();
+
+        Rpcs.Device device = convertToDevice(metadata);
+        if (device != null) {
+            responseBuilder.setDevice(device);
+        }
+        ByteString image = convertToImage(metadata);
+        if (image != null) {
+            responseBuilder.setImage(image);
+        }
+        Rpcs.ObservedDeviceStrings strings = convertToObservedDeviceStrings(metadata);
+        if (strings != null) {
+            responseBuilder.setStrings(strings);
+        }
+
+        return responseBuilder.build();
     }
 
     static @Nullable FastPairAccountKeyDeviceMetadataParcel
-            convertFastPairUploadInfoToFastPairAccountKeyDeviceMetadata(
-                    FastPairUploadInfo uploadInfo) {
+            convertToFastPairAccountKeyDeviceMetadata(
+            @Nullable FastPairUploadInfo uploadInfo) {
         if (uploadInfo == null) {
             return null;
         }
 
         FastPairAccountKeyDeviceMetadataParcel accountKeyDeviceMetadataParcel =
                 new FastPairAccountKeyDeviceMetadataParcel();
-        accountKeyDeviceMetadataParcel.accountKey = uploadInfo.getAccountKey().toByteArray();
-        accountKeyDeviceMetadataParcel.sha256AccountKeyPublicAddress =
-                uploadInfo.getSha256AccountKeyPublicAddress().toByteArray();
-        accountKeyDeviceMetadataParcel.metadata =
-                convertStoredDiscoveryItemToFastPairDeviceMetadata(
-                        uploadInfo.getStoredDiscoveryItem());
-        accountKeyDeviceMetadataParcel.discoveryItem =
-                convertStoredDiscoveryItemToFastPairDiscoveryItem(
-                        uploadInfo.getStoredDiscoveryItem());
+        if (uploadInfo.getAccountKey() != null) {
+            accountKeyDeviceMetadataParcel.accountKey = uploadInfo.getAccountKey().toByteArray();
+        }
+        if (uploadInfo.getSha256AccountKeyPublicAddress() != null) {
+            accountKeyDeviceMetadataParcel.sha256AccountKeyPublicAddress =
+                    uploadInfo.getSha256AccountKeyPublicAddress().toByteArray();
+        }
+        if (uploadInfo.getStoredDiscoveryItem() != null) {
+            accountKeyDeviceMetadataParcel.metadata =
+                    convertToFastPairDeviceMetadata(uploadInfo.getStoredDiscoveryItem());
+            accountKeyDeviceMetadataParcel.discoveryItem =
+                    convertToFastPairDiscoveryItem(uploadInfo.getStoredDiscoveryItem());
+        }
 
         return accountKeyDeviceMetadataParcel;
     }
 
     private static @Nullable FastPairDiscoveryItemParcel
-            convertStoredDiscoveryItemToFastPairDiscoveryItem(
-                    @Nullable Cache.StoredDiscoveryItem storedDiscoveryItem) {
-        if (storedDiscoveryItem == null) {
-            return null;
-        }
-
+            convertToFastPairDiscoveryItem(Cache.StoredDiscoveryItem storedDiscoveryItem) {
         FastPairDiscoveryItemParcel discoveryItemParcel = new FastPairDiscoveryItemParcel();
         discoveryItemParcel.actionUrl = storedDiscoveryItem.getActionUrl();
         discoveryItemParcel.actionUrlType = storedDiscoveryItem.getActionUrlType().getNumber();
@@ -457,12 +558,7 @@
         String updateCompanionAppDescription = bundle.getString("updateCompanionAppDescription");
     */
     private static @Nullable FastPairDeviceMetadataParcel
-            convertStoredDiscoveryItemToFastPairDeviceMetadata(
-                    @Nullable Cache.StoredDiscoveryItem storedDiscoveryItem) {
-        if (storedDiscoveryItem == null) {
-            return null;
-        }
-
+            convertToFastPairDeviceMetadata(Cache.StoredDiscoveryItem storedDiscoveryItem) {
         FastPairStrings fpStrings = storedDiscoveryItem.getFastPairStrings();
 
         FastPairDeviceMetadataParcel metadataParcel = new FastPairDeviceMetadataParcel();
@@ -498,11 +594,6 @@
                 fpInformation.getTrueWirelessImages().getRightBudUrl();
         metadataParcel.deviceType = fpInformation.getDeviceType().getNumber();
 
-        metadataParcel.bleTxPower = storedDiscoveryItem.getTxPower();
-        metadataParcel.image = storedDiscoveryItem.getIconPng().toByteArray();
-        metadataParcel.imageUrl = storedDiscoveryItem.getIconFifeUrl();
-        metadataParcel.intentUri = storedDiscoveryItem.getActionUrl();
-
         return metadataParcel;
     }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java
new file mode 100644
index 0000000..08a3c7c
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java
@@ -0,0 +1,733 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.provider;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.accounts.Account;
+import android.nearby.aidl.FastPairAccountKeyDeviceMetadataParcel;
+import android.nearby.aidl.FastPairAntispoofkeyDeviceMetadataParcel;
+import android.nearby.aidl.FastPairDeviceMetadataParcel;
+import android.nearby.aidl.FastPairDiscoveryItemParcel;
+import android.nearby.aidl.FastPairEligibleAccountParcel;
+
+import androidx.test.filters.SdkSuppress;
+
+import com.android.server.nearby.fastpair.footprint.FastPairUploadInfo;
+
+import com.google.protobuf.ByteString;
+
+import org.junit.Test;
+
+import java.util.List;
+
+import service.proto.Cache;
+import service.proto.Data;
+import service.proto.FastPairString.FastPairStrings;
+import service.proto.Rpcs;
+
+public class UtilsTest {
+
+    private static final String ASSISTANT_SETUP_HALFSHEET = "ASSISTANT_SETUP_HALFSHEET";
+    private static final String ASSISTANT_SETUP_NOTIFICATION = "ASSISTANT_SETUP_NOTIFICATION";
+    private static final int BLE_TX_POWER = 5;
+    private static final String CONFIRM_PIN_DESCRIPTION = "CONFIRM_PIN_DESCRIPTION";
+    private static final String CONFIRM_PIN_TITLE = "CONFIRM_PIN_TITLE";
+    private static final String CONNECT_SUCCESS_COMPANION_APP_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_INSTALLED";
+    private static final String CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED";
+    private static final int DEVICE_TYPE = 1;
+    private static final String DOWNLOAD_COMPANION_APP_DESCRIPTION =
+            "DOWNLOAD_COMPANION_APP_DESCRIPTION";
+    private static final Account ELIGIBLE_ACCOUNT_1 = new Account("abc@google.com", "type1");
+    private static final String FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION =
+            "FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION";
+    private static final String FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION =
+            "FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION";
+    private static final byte[] IMAGE = new byte[]{7, 9};
+    private static final String IMAGE_URL = "IMAGE_URL";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION =
+            "INITIAL_NOTIFICATION_DESCRIPTION";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT =
+            "INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT";
+    private static final String INITIAL_PAIRING_DESCRIPTION = "INITIAL_PAIRING_DESCRIPTION";
+    private static final String INTENT_URI = "INTENT_URI";
+    private static final String LOCALE = "LOCALE";
+    private static final String OPEN_COMPANION_APP_DESCRIPTION = "OPEN_COMPANION_APP_DESCRIPTION";
+    private static final String RETRO_ACTIVE_PAIRING_DESCRIPTION =
+            "RETRO_ACTIVE_PAIRING_DESCRIPTION";
+    private static final String SUBSEQUENT_PAIRING_DESCRIPTION = "SUBSEQUENT_PAIRING_DESCRIPTION";
+    private static final String SYNC_CONTACT_DESCRPTION = "SYNC_CONTACT_DESCRPTION";
+    private static final String SYNC_CONTACTS_TITLE = "SYNC_CONTACTS_TITLE";
+    private static final String SYNC_SMS_DESCRIPTION = "SYNC_SMS_DESCRIPTION";
+    private static final String SYNC_SMS_TITLE = "SYNC_SMS_TITLE";
+    private static final float TRIGGER_DISTANCE = 111;
+    private static final String TRUE_WIRELESS_IMAGE_URL_CASE = "TRUE_WIRELESS_IMAGE_URL_CASE";
+    private static final String TRUE_WIRELESS_IMAGE_URL_LEFT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_LEFT_BUD";
+    private static final String TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD";
+    private static final String UNABLE_TO_CONNECT_DESCRIPTION = "UNABLE_TO_CONNECT_DESCRIPTION";
+    private static final String UNABLE_TO_CONNECT_TITLE = "UNABLE_TO_CONNECT_TITLE";
+    private static final String UPDATE_COMPANION_APP_DESCRIPTION =
+            "UPDATE_COMPANION_APP_DESCRIPTION";
+    private static final String WAIT_LAUNCH_COMPANION_APP_DESCRIPTION =
+            "WAIT_LAUNCH_COMPANION_APP_DESCRIPTION";
+    private static final byte[] ACCOUNT_KEY = new byte[]{3};
+    private static final byte[] SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS = new byte[]{2, 8};
+    private static final byte[] ANTI_SPOOFING_KEY = new byte[]{4, 5, 6};
+    private static final String ACTION_URL = "ACTION_URL";
+    private static final int ACTION_URL_TYPE = 1;
+    private static final String APP_NAME = "APP_NAME";
+    private static final int ATTACHMENT_TYPE = 1;
+    private static final byte[] AUTHENTICATION_PUBLIC_KEY_SEC_P256R1 = new byte[]{5, 7};
+    private static final byte[] BLE_RECORD_BYTES = new byte[]{2, 4};
+    private static final int DEBUG_CATEGORY = 1;
+    private static final String DEBUG_MESSAGE = "DEBUG_MESSAGE";
+    private static final String DESCRIPTION = "DESCRIPTION";
+    private static final String DEVICE_NAME = "DEVICE_NAME";
+    private static final String DISPLAY_URL = "DISPLAY_URL";
+    private static final String ENTITY_ID = "ENTITY_ID";
+    private static final String FEATURE_GRAPHIC_URL = "FEATURE_GRAPHIC_URL";
+    private static final long FIRST_OBSERVATION_TIMESTAMP_MILLIS = 8393L;
+    private static final String GROUP_ID = "GROUP_ID";
+    private static final String ICON_FIFE_URL = "ICON_FIFE_URL";
+    private static final byte[] ICON_PNG = new byte[]{2, 5};
+    private static final String ID = "ID";
+    private static final long LAST_OBSERVATION_TIMESTAMP_MILLIS = 934234L;
+    private static final int LAST_USER_EXPERIENCE = 1;
+    private static final long LOST_MILLIS = 393284L;
+    private static final String MAC_ADDRESS = "MAC_ADDRESS";
+    private static final String NAME = "NAME";
+    private static final String PACKAGE_NAME = "PACKAGE_NAME";
+    private static final long PENDING_APP_INSTALL_TIMESTAMP_MILLIS = 832393L;
+    private static final int RSSI = 9;
+    private static final int STATE = 1;
+    private static final String TITLE = "TITLE";
+    private static final String TRIGGER_ID = "TRIGGER_ID";
+    private static final int TX_POWER = 63;
+    private static final int TYPE = 1;
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathConvertToFastPairDevicesWithAccountKey() {
+        FastPairAccountKeyDeviceMetadataParcel[] array = {
+                genHappyPathFastPairAccountkeyDeviceMetadataParcel()};
+
+        List<Data.FastPairDeviceWithAccountKey> deviceWithAccountKey =
+                Utils.convertToFastPairDevicesWithAccountKey(array);
+        assertThat(deviceWithAccountKey.size()).isEqualTo(1);
+        assertThat(deviceWithAccountKey.get(0)).isEqualTo(
+                genHappyPathFastPairDeviceWithAccountKey());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairDevicesWithAccountKeyWithNullArray() {
+        FastPairAccountKeyDeviceMetadataParcel[] array = null;
+        assertThat(Utils.convertToFastPairDevicesWithAccountKey(array).size()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairDevicesWithAccountKeyWithNullElement() {
+        FastPairAccountKeyDeviceMetadataParcel[] array = {null};
+        assertThat(Utils.convertToFastPairDevicesWithAccountKey(array).size()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairDevicesWithAccountKeyWithEmptyElementNoCrash() {
+        FastPairAccountKeyDeviceMetadataParcel[] array = {
+                genEmptyFastPairAccountkeyDeviceMetadataParcel()};
+
+        List<Data.FastPairDeviceWithAccountKey> deviceWithAccountKey =
+                Utils.convertToFastPairDevicesWithAccountKey(array);
+        assertThat(deviceWithAccountKey.size()).isEqualTo(1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairDevicesWithAccountKeyWithEmptyMetadataDiscoveryNoCrash() {
+        FastPairAccountKeyDeviceMetadataParcel[] array = {
+                genFastPairAccountkeyDeviceMetadataParcelWithEmptyMetadataDiscoveryItem()};
+
+        List<Data.FastPairDeviceWithAccountKey> deviceWithAccountKey =
+                Utils.convertToFastPairDevicesWithAccountKey(array);
+        assertThat(deviceWithAccountKey.size()).isEqualTo(1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairDevicesWithAccountKeyWithMixedArrayElements() {
+        FastPairAccountKeyDeviceMetadataParcel[] array = {
+                null,
+                genHappyPathFastPairAccountkeyDeviceMetadataParcel(),
+                genEmptyFastPairAccountkeyDeviceMetadataParcel(),
+                genFastPairAccountkeyDeviceMetadataParcelWithEmptyMetadataDiscoveryItem()};
+
+        assertThat(Utils.convertToFastPairDevicesWithAccountKey(array).size()).isEqualTo(3);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathConvertToAccountList() {
+        FastPairEligibleAccountParcel[] array = {genHappyPathFastPairEligibleAccountParcel()};
+
+        List<Account> accountList = Utils.convertToAccountList(array);
+        assertThat(accountList.size()).isEqualTo(1);
+        assertThat(accountList.get(0)).isEqualTo(ELIGIBLE_ACCOUNT_1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToAccountListNullArray() {
+        FastPairEligibleAccountParcel[] array = null;
+
+        List<Account> accountList = Utils.convertToAccountList(array);
+        assertThat(accountList.size()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToAccountListWithNullElement() {
+        FastPairEligibleAccountParcel[] array = {null};
+
+        List<Account> accountList = Utils.convertToAccountList(array);
+        assertThat(accountList.size()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToAccountListWithEmptyElementNotCrash() {
+        FastPairEligibleAccountParcel[] array =
+                {genEmptyFastPairEligibleAccountParcel()};
+
+        List<Account> accountList = Utils.convertToAccountList(array);
+        assertThat(accountList.size()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToAccountListWithMixedArrayElements() {
+        FastPairEligibleAccountParcel[] array = {
+                genHappyPathFastPairEligibleAccountParcel(),
+                genEmptyFastPairEligibleAccountParcel(),
+                null,
+                genHappyPathFastPairEligibleAccountParcel()};
+
+        List<Account> accountList = Utils.convertToAccountList(array);
+        assertThat(accountList.size()).isEqualTo(2);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathConvertToGetObservedDeviceResponse() {
+        Rpcs.GetObservedDeviceResponse response =
+                Utils.convertToGetObservedDeviceResponse(
+                        genHappyPathFastPairAntispoofkeyDeviceMetadataParcel());
+        assertThat(response).isEqualTo(genHappyPathObservedDeviceResponse());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToGetObservedDeviceResponseWithNullInput() {
+        assertThat(Utils.convertToGetObservedDeviceResponse(null))
+                .isEqualTo(null);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToGetObservedDeviceResponseWithEmptyInputNotCrash() {
+        Utils.convertToGetObservedDeviceResponse(
+                genEmptyFastPairAntispoofkeyDeviceMetadataParcel());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToGetObservedDeviceResponseWithEmptyDeviceMetadataNotCrash() {
+        Utils.convertToGetObservedDeviceResponse(
+                genFastPairAntispoofkeyDeviceMetadataParcelWithEmptyDeviceMetadata());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathConvertToFastPairAccountKeyDeviceMetadata() {
+        FastPairAccountKeyDeviceMetadataParcel metadataParcel =
+                Utils.convertToFastPairAccountKeyDeviceMetadata(genHappyPathFastPairUploadInfo());
+        ensureHappyPathAsExpected(metadataParcel);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairAccountKeyDeviceMetadataWithNullInput() {
+        assertThat(Utils.convertToFastPairAccountKeyDeviceMetadata(null)).isEqualTo(null);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConvertToFastPairAccountKeyDeviceMetadataWithEmptyFieldsNotCrash() {
+        Utils.convertToFastPairAccountKeyDeviceMetadata(
+                new FastPairUploadInfo(
+                        null /* discoveryItem */,
+                        null /* accountKey */,
+                        null /* sha256AccountKeyPublicAddress */));
+    }
+
+    private static FastPairUploadInfo genHappyPathFastPairUploadInfo() {
+        return new FastPairUploadInfo(
+                genHappyPathStoredDiscoveryItem(),
+                ByteString.copyFrom(ACCOUNT_KEY),
+                ByteString.copyFrom(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS));
+
+    }
+
+    private static void ensureHappyPathAsExpected(
+            FastPairAccountKeyDeviceMetadataParcel metadataParcel) {
+        assertThat(metadataParcel).isNotNull();
+        assertThat(metadataParcel.accountKey).isEqualTo(ACCOUNT_KEY);
+        assertThat(metadataParcel.sha256AccountKeyPublicAddress)
+                .isEqualTo(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS);
+        ensureHappyPathAsExpected(metadataParcel.metadata);
+        ensureHappyPathAsExpected(metadataParcel.discoveryItem);
+    }
+
+    private static void ensureHappyPathAsExpected(FastPairDeviceMetadataParcel metadataParcel) {
+        assertThat(metadataParcel).isNotNull();
+
+        assertThat(metadataParcel.assistantSetupHalfSheet).isEqualTo(ASSISTANT_SETUP_HALFSHEET);
+        assertThat(metadataParcel.assistantSetupNotification).isEqualTo(
+                ASSISTANT_SETUP_NOTIFICATION);
+
+
+        assertThat(metadataParcel.confirmPinDescription).isEqualTo(CONFIRM_PIN_DESCRIPTION);
+        assertThat(metadataParcel.confirmPinTitle).isEqualTo(CONFIRM_PIN_TITLE);
+        assertThat(metadataParcel.connectSuccessCompanionAppInstalled).isEqualTo(
+                CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        assertThat(metadataParcel.connectSuccessCompanionAppNotInstalled).isEqualTo(
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+
+        assertThat(metadataParcel.deviceType).isEqualTo(DEVICE_TYPE);
+
+        assertThat(metadataParcel.failConnectGoToSettingsDescription).isEqualTo(
+                FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        assertThat(metadataParcel.fastPairTvConnectDeviceNoAccountDescription).isEqualTo(
+                FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION);
+
+        assertThat(metadataParcel.initialNotificationDescription).isEqualTo(
+                INITIAL_NOTIFICATION_DESCRIPTION);
+        assertThat(metadataParcel.initialNotificationDescriptionNoAccount).isEqualTo(
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        assertThat(metadataParcel.initialPairingDescription).isEqualTo(INITIAL_PAIRING_DESCRIPTION);
+
+
+        assertThat(metadataParcel.retroactivePairingDescription).isEqualTo(
+                RETRO_ACTIVE_PAIRING_DESCRIPTION);
+
+        assertThat(metadataParcel.subsequentPairingDescription).isEqualTo(
+                SUBSEQUENT_PAIRING_DESCRIPTION);
+        assertThat(metadataParcel.syncContactsDescription).isEqualTo(SYNC_CONTACT_DESCRPTION);
+        assertThat(metadataParcel.syncContactsTitle).isEqualTo(SYNC_CONTACTS_TITLE);
+        assertThat(metadataParcel.syncSmsDescription).isEqualTo(SYNC_SMS_DESCRIPTION);
+        assertThat(metadataParcel.syncSmsTitle).isEqualTo(SYNC_SMS_TITLE);
+
+        assertThat(metadataParcel.trueWirelessImageUrlCase).isEqualTo(TRUE_WIRELESS_IMAGE_URL_CASE);
+        assertThat(metadataParcel.trueWirelessImageUrlLeftBud).isEqualTo(
+                TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        assertThat(metadataParcel.trueWirelessImageUrlRightBud).isEqualTo(
+                TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        assertThat(metadataParcel.waitLaunchCompanionAppDescription).isEqualTo(
+                WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+
+        /* do we need upload this? */
+        // assertThat(metadataParcel.locale).isEqualTo(LOCALE);
+        // assertThat(metadataParcel.name).isEqualTo(NAME);
+        // assertThat(metadataParcel.downloadCompanionAppDescription).isEqualTo(
+        //        DOWNLOAD_COMPANION_APP_DESCRIPTION);
+        // assertThat(metadataParcel.openCompanionAppDescription).isEqualTo(
+        //        OPEN_COMPANION_APP_DESCRIPTION);
+        // assertThat(metadataParcel.triggerDistance).isWithin(DELTA).of(TRIGGER_DISTANCE);
+        // assertThat(metadataParcel.unableToConnectDescription).isEqualTo(
+        //        UNABLE_TO_CONNECT_DESCRIPTION);
+        // assertThat(metadataParcel.unableToConnectTitle).isEqualTo(UNABLE_TO_CONNECT_TITLE);
+        // assertThat(metadataParcel.updateCompanionAppDescription).isEqualTo(
+        //        UPDATE_COMPANION_APP_DESCRIPTION);
+
+        // assertThat(metadataParcel.bleTxPower).isEqualTo(BLE_TX_POWER);
+        // assertThat(metadataParcel.image).isEqualTo(IMAGE);
+        // assertThat(metadataParcel.imageUrl).isEqualTo(IMAGE_URL);
+        // assertThat(metadataParcel.intentUri).isEqualTo(INTENT_URI);
+    }
+
+    private static void ensureHappyPathAsExpected(FastPairDiscoveryItemParcel itemParcel) {
+        assertThat(itemParcel.actionUrl).isEqualTo(ACTION_URL);
+        assertThat(itemParcel.actionUrlType).isEqualTo(ACTION_URL_TYPE);
+        assertThat(itemParcel.appName).isEqualTo(APP_NAME);
+        assertThat(itemParcel.attachmentType).isEqualTo(ATTACHMENT_TYPE);
+        assertThat(itemParcel.authenticationPublicKeySecp256r1)
+                .isEqualTo(AUTHENTICATION_PUBLIC_KEY_SEC_P256R1);
+        assertThat(itemParcel.bleRecordBytes).isEqualTo(BLE_RECORD_BYTES);
+        assertThat(itemParcel.debugCategory).isEqualTo(DEBUG_CATEGORY);
+        assertThat(itemParcel.debugMessage).isEqualTo(DEBUG_MESSAGE);
+        assertThat(itemParcel.description).isEqualTo(DESCRIPTION);
+        assertThat(itemParcel.deviceName).isEqualTo(DEVICE_NAME);
+        assertThat(itemParcel.displayUrl).isEqualTo(DISPLAY_URL);
+        assertThat(itemParcel.entityId).isEqualTo(ENTITY_ID);
+        assertThat(itemParcel.featureGraphicUrl).isEqualTo(FEATURE_GRAPHIC_URL);
+        assertThat(itemParcel.firstObservationTimestampMillis)
+                .isEqualTo(FIRST_OBSERVATION_TIMESTAMP_MILLIS);
+        assertThat(itemParcel.groupId).isEqualTo(GROUP_ID);
+        assertThat(itemParcel.iconFifeUrl).isEqualTo(ICON_FIFE_URL);
+        assertThat(itemParcel.iconPng).isEqualTo(ICON_PNG);
+        assertThat(itemParcel.id).isEqualTo(ID);
+        assertThat(itemParcel.lastObservationTimestampMillis)
+                .isEqualTo(LAST_OBSERVATION_TIMESTAMP_MILLIS);
+        assertThat(itemParcel.lastUserExperience).isEqualTo(LAST_USER_EXPERIENCE);
+        assertThat(itemParcel.lostMillis).isEqualTo(LOST_MILLIS);
+        assertThat(itemParcel.macAddress).isEqualTo(MAC_ADDRESS);
+        assertThat(itemParcel.packageName).isEqualTo(PACKAGE_NAME);
+        assertThat(itemParcel.pendingAppInstallTimestampMillis)
+                .isEqualTo(PENDING_APP_INSTALL_TIMESTAMP_MILLIS);
+        assertThat(itemParcel.rssi).isEqualTo(RSSI);
+        assertThat(itemParcel.state).isEqualTo(STATE);
+        assertThat(itemParcel.title).isEqualTo(TITLE);
+        assertThat(itemParcel.triggerId).isEqualTo(TRIGGER_ID);
+        assertThat(itemParcel.txPower).isEqualTo(TX_POWER);
+        assertThat(itemParcel.type).isEqualTo(TYPE);
+    }
+
+    private static FastPairEligibleAccountParcel genHappyPathFastPairEligibleAccountParcel() {
+        FastPairEligibleAccountParcel parcel = new FastPairEligibleAccountParcel();
+        parcel.account = ELIGIBLE_ACCOUNT_1;
+        parcel.optIn = true;
+
+        return parcel;
+    }
+
+    private static FastPairEligibleAccountParcel genEmptyFastPairEligibleAccountParcel() {
+        return new FastPairEligibleAccountParcel();
+    }
+
+    private static FastPairDeviceMetadataParcel genEmptyFastPairDeviceMetadataParcel() {
+        return new FastPairDeviceMetadataParcel();
+    }
+
+    private static FastPairDiscoveryItemParcel genEmptyFastPairDiscoveryItemParcel() {
+        return new FastPairDiscoveryItemParcel();
+    }
+
+    private static FastPairAccountKeyDeviceMetadataParcel
+            genEmptyFastPairAccountkeyDeviceMetadataParcel() {
+        return new FastPairAccountKeyDeviceMetadataParcel();
+    }
+
+    private static FastPairAccountKeyDeviceMetadataParcel
+            genFastPairAccountkeyDeviceMetadataParcelWithEmptyMetadataDiscoveryItem() {
+        FastPairAccountKeyDeviceMetadataParcel parcel =
+                new FastPairAccountKeyDeviceMetadataParcel();
+        parcel.metadata = genEmptyFastPairDeviceMetadataParcel();
+        parcel.discoveryItem = genEmptyFastPairDiscoveryItemParcel();
+
+        return parcel;
+    }
+
+    private static FastPairAccountKeyDeviceMetadataParcel
+            genHappyPathFastPairAccountkeyDeviceMetadataParcel() {
+        FastPairAccountKeyDeviceMetadataParcel parcel =
+                new FastPairAccountKeyDeviceMetadataParcel();
+        parcel.accountKey = ACCOUNT_KEY;
+        parcel.metadata = genHappyPathFastPairDeviceMetadataParcel();
+        parcel.sha256AccountKeyPublicAddress = SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS;
+        parcel.discoveryItem = genHappyPathFastPairDiscoveryItemParcel();
+
+        return parcel;
+    }
+
+    private static FastPairDeviceMetadataParcel genHappyPathFastPairDeviceMetadataParcel() {
+        FastPairDeviceMetadataParcel parcel = new FastPairDeviceMetadataParcel();
+
+        parcel.assistantSetupHalfSheet = ASSISTANT_SETUP_HALFSHEET;
+        parcel.assistantSetupNotification = ASSISTANT_SETUP_NOTIFICATION;
+        parcel.bleTxPower = BLE_TX_POWER;
+        parcel.confirmPinDescription = CONFIRM_PIN_DESCRIPTION;
+        parcel.confirmPinTitle = CONFIRM_PIN_TITLE;
+        parcel.connectSuccessCompanionAppInstalled = CONNECT_SUCCESS_COMPANION_APP_INSTALLED;
+        parcel.connectSuccessCompanionAppNotInstalled =
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED;
+        parcel.deviceType = DEVICE_TYPE;
+        parcel.downloadCompanionAppDescription = DOWNLOAD_COMPANION_APP_DESCRIPTION;
+        parcel.failConnectGoToSettingsDescription = FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION;
+        parcel.fastPairTvConnectDeviceNoAccountDescription =
+                FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION;
+        parcel.image = IMAGE;
+        parcel.imageUrl = IMAGE_URL;
+        parcel.initialNotificationDescription = INITIAL_NOTIFICATION_DESCRIPTION;
+        parcel.initialNotificationDescriptionNoAccount =
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT;
+        parcel.initialPairingDescription = INITIAL_PAIRING_DESCRIPTION;
+        parcel.intentUri = INTENT_URI;
+        parcel.locale = LOCALE;
+        parcel.name = NAME;
+        parcel.openCompanionAppDescription = OPEN_COMPANION_APP_DESCRIPTION;
+        parcel.retroactivePairingDescription = RETRO_ACTIVE_PAIRING_DESCRIPTION;
+        parcel.subsequentPairingDescription = SUBSEQUENT_PAIRING_DESCRIPTION;
+        parcel.syncContactsDescription = SYNC_CONTACT_DESCRPTION;
+        parcel.syncContactsTitle = SYNC_CONTACTS_TITLE;
+        parcel.syncSmsDescription = SYNC_SMS_DESCRIPTION;
+        parcel.syncSmsTitle = SYNC_SMS_TITLE;
+        parcel.triggerDistance = TRIGGER_DISTANCE;
+        parcel.trueWirelessImageUrlCase = TRUE_WIRELESS_IMAGE_URL_CASE;
+        parcel.trueWirelessImageUrlLeftBud = TRUE_WIRELESS_IMAGE_URL_LEFT_BUD;
+        parcel.trueWirelessImageUrlRightBud = TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD;
+        parcel.unableToConnectDescription = UNABLE_TO_CONNECT_DESCRIPTION;
+        parcel.unableToConnectTitle = UNABLE_TO_CONNECT_TITLE;
+        parcel.updateCompanionAppDescription = UPDATE_COMPANION_APP_DESCRIPTION;
+        parcel.waitLaunchCompanionAppDescription = WAIT_LAUNCH_COMPANION_APP_DESCRIPTION;
+
+        return parcel;
+    }
+
+    private static Cache.StoredDiscoveryItem genHappyPathStoredDiscoveryItem() {
+        Cache.StoredDiscoveryItem.Builder storedDiscoveryItemBuilder =
+                Cache.StoredDiscoveryItem.newBuilder();
+        storedDiscoveryItemBuilder.setActionUrl(ACTION_URL);
+        storedDiscoveryItemBuilder.setActionUrlType(Cache.ResolvedUrlType.WEBPAGE);
+        storedDiscoveryItemBuilder.setAppName(APP_NAME);
+        storedDiscoveryItemBuilder.setAttachmentType(
+                Cache.DiscoveryAttachmentType.DISCOVERY_ATTACHMENT_TYPE_NORMAL);
+        storedDiscoveryItemBuilder.setAuthenticationPublicKeySecp256R1(
+                ByteString.copyFrom(AUTHENTICATION_PUBLIC_KEY_SEC_P256R1));
+        storedDiscoveryItemBuilder.setBleRecordBytes(ByteString.copyFrom(BLE_RECORD_BYTES));
+        storedDiscoveryItemBuilder.setDebugCategory(
+                Cache.StoredDiscoveryItem.DebugMessageCategory.STATUS_VALID_NOTIFICATION);
+        storedDiscoveryItemBuilder.setDebugMessage(DEBUG_MESSAGE);
+        storedDiscoveryItemBuilder.setDescription(DESCRIPTION);
+        storedDiscoveryItemBuilder.setDeviceName(DEVICE_NAME);
+        storedDiscoveryItemBuilder.setDisplayUrl(DISPLAY_URL);
+        storedDiscoveryItemBuilder.setEntityId(ENTITY_ID);
+        storedDiscoveryItemBuilder.setFeatureGraphicUrl(FEATURE_GRAPHIC_URL);
+        storedDiscoveryItemBuilder.setFirstObservationTimestampMillis(
+                FIRST_OBSERVATION_TIMESTAMP_MILLIS);
+        storedDiscoveryItemBuilder.setGroupId(GROUP_ID);
+        storedDiscoveryItemBuilder.setIconFifeUrl(ICON_FIFE_URL);
+        storedDiscoveryItemBuilder.setIconPng(ByteString.copyFrom(ICON_PNG));
+        storedDiscoveryItemBuilder.setId(ID);
+        storedDiscoveryItemBuilder.setLastObservationTimestampMillis(
+                LAST_OBSERVATION_TIMESTAMP_MILLIS);
+        storedDiscoveryItemBuilder.setLastUserExperience(
+                Cache.StoredDiscoveryItem.ExperienceType.EXPERIENCE_GOOD);
+        storedDiscoveryItemBuilder.setLostMillis(LOST_MILLIS);
+        storedDiscoveryItemBuilder.setMacAddress(MAC_ADDRESS);
+        storedDiscoveryItemBuilder.setPackageName(PACKAGE_NAME);
+        storedDiscoveryItemBuilder.setPendingAppInstallTimestampMillis(
+                PENDING_APP_INSTALL_TIMESTAMP_MILLIS);
+        storedDiscoveryItemBuilder.setRssi(RSSI);
+        storedDiscoveryItemBuilder.setState(Cache.StoredDiscoveryItem.State.STATE_ENABLED);
+        storedDiscoveryItemBuilder.setTitle(TITLE);
+        storedDiscoveryItemBuilder.setTriggerId(TRIGGER_ID);
+        storedDiscoveryItemBuilder.setTxPower(TX_POWER);
+        storedDiscoveryItemBuilder.setType(Cache.NearbyType.NEARBY_PROXIMITY_BEACON);
+
+        FastPairStrings.Builder stringsBuilder = FastPairStrings.newBuilder();
+        stringsBuilder.setAssistantHalfSheetDescription(ASSISTANT_SETUP_HALFSHEET);
+        stringsBuilder.setAssistantNotificationDescription(ASSISTANT_SETUP_NOTIFICATION);
+        stringsBuilder.setConfirmPinDescription(CONFIRM_PIN_DESCRIPTION);
+        stringsBuilder.setConfirmPinTitle(CONFIRM_PIN_TITLE);
+        stringsBuilder.setPairingFinishedCompanionAppInstalled(
+                CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        stringsBuilder.setPairingFinishedCompanionAppNotInstalled(
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+        stringsBuilder.setPairingFailDescription(
+                FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        stringsBuilder.setFastPairTvConnectDeviceNoAccountDescription(
+                FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION);
+        stringsBuilder.setTapToPairWithAccount(
+                INITIAL_NOTIFICATION_DESCRIPTION);
+        stringsBuilder.setTapToPairWithoutAccount(
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        stringsBuilder.setInitialPairingDescription(INITIAL_PAIRING_DESCRIPTION);
+        stringsBuilder.setRetroactivePairingDescription(RETRO_ACTIVE_PAIRING_DESCRIPTION);
+        stringsBuilder.setSubsequentPairingDescription(SUBSEQUENT_PAIRING_DESCRIPTION);
+        stringsBuilder.setSyncContactsDescription(SYNC_CONTACT_DESCRPTION);
+        stringsBuilder.setSyncContactsTitle(SYNC_CONTACTS_TITLE);
+        stringsBuilder.setSyncSmsDescription(SYNC_SMS_DESCRIPTION);
+        stringsBuilder.setSyncSmsTitle(SYNC_SMS_TITLE);
+        stringsBuilder.setWaitAppLaunchDescription(WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+        storedDiscoveryItemBuilder.setFastPairStrings(stringsBuilder.build());
+
+        Cache.FastPairInformation.Builder fpInformationBuilder =
+                Cache.FastPairInformation.newBuilder();
+        Rpcs.TrueWirelessHeadsetImages.Builder imagesBuilder =
+                Rpcs.TrueWirelessHeadsetImages.newBuilder();
+        imagesBuilder.setCaseUrl(TRUE_WIRELESS_IMAGE_URL_CASE);
+        imagesBuilder.setLeftBudUrl(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        imagesBuilder.setRightBudUrl(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        fpInformationBuilder.setTrueWirelessImages(imagesBuilder.build());
+        fpInformationBuilder.setDeviceType(Rpcs.DeviceType.HEADPHONES);
+
+        storedDiscoveryItemBuilder.setFastPairInformation(fpInformationBuilder.build());
+        storedDiscoveryItemBuilder.setTxPower(TX_POWER);
+
+        storedDiscoveryItemBuilder.setIconPng(ByteString.copyFrom(ICON_PNG));
+        storedDiscoveryItemBuilder.setIconFifeUrl(ICON_FIFE_URL);
+        storedDiscoveryItemBuilder.setActionUrl(ACTION_URL);
+
+        return storedDiscoveryItemBuilder.build();
+    }
+
+    private static Data.FastPairDeviceWithAccountKey genHappyPathFastPairDeviceWithAccountKey() {
+        Data.FastPairDeviceWithAccountKey.Builder fpDeviceBuilder =
+                Data.FastPairDeviceWithAccountKey.newBuilder();
+        fpDeviceBuilder.setAccountKey(ByteString.copyFrom(ACCOUNT_KEY));
+        fpDeviceBuilder.setSha256AccountKeyPublicAddress(
+                ByteString.copyFrom(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS));
+        fpDeviceBuilder.setDiscoveryItem(genHappyPathStoredDiscoveryItem());
+
+        return fpDeviceBuilder.build();
+    }
+
+    private static FastPairDiscoveryItemParcel genHappyPathFastPairDiscoveryItemParcel() {
+        FastPairDiscoveryItemParcel parcel = new FastPairDiscoveryItemParcel();
+        parcel.actionUrl = ACTION_URL;
+        parcel.actionUrlType = ACTION_URL_TYPE;
+        parcel.appName = APP_NAME;
+        parcel.attachmentType = ATTACHMENT_TYPE;
+        parcel.authenticationPublicKeySecp256r1 = AUTHENTICATION_PUBLIC_KEY_SEC_P256R1;
+        parcel.bleRecordBytes = BLE_RECORD_BYTES;
+        parcel.debugCategory = DEBUG_CATEGORY;
+        parcel.debugMessage = DEBUG_MESSAGE;
+        parcel.description = DESCRIPTION;
+        parcel.deviceName = DEVICE_NAME;
+        parcel.displayUrl = DISPLAY_URL;
+        parcel.entityId = ENTITY_ID;
+        parcel.featureGraphicUrl = FEATURE_GRAPHIC_URL;
+        parcel.firstObservationTimestampMillis = FIRST_OBSERVATION_TIMESTAMP_MILLIS;
+        parcel.groupId = GROUP_ID;
+        parcel.iconFifeUrl = ICON_FIFE_URL;
+        parcel.iconPng = ICON_PNG;
+        parcel.id = ID;
+        parcel.lastObservationTimestampMillis = LAST_OBSERVATION_TIMESTAMP_MILLIS;
+        parcel.lastUserExperience = LAST_USER_EXPERIENCE;
+        parcel.lostMillis = LOST_MILLIS;
+        parcel.macAddress = MAC_ADDRESS;
+        parcel.packageName = PACKAGE_NAME;
+        parcel.pendingAppInstallTimestampMillis = PENDING_APP_INSTALL_TIMESTAMP_MILLIS;
+        parcel.rssi = RSSI;
+        parcel.state = STATE;
+        parcel.title = TITLE;
+        parcel.triggerId = TRIGGER_ID;
+        parcel.txPower = TX_POWER;
+        parcel.type = TYPE;
+
+        return parcel;
+    }
+
+    private static Rpcs.GetObservedDeviceResponse genHappyPathObservedDeviceResponse() {
+        Rpcs.Device.Builder deviceBuilder = Rpcs.Device.newBuilder();
+        deviceBuilder.setAntiSpoofingKeyPair(Rpcs.AntiSpoofingKeyPair.newBuilder()
+                .setPublicKey(ByteString.copyFrom(ANTI_SPOOFING_KEY))
+                .build());
+        Rpcs.TrueWirelessHeadsetImages.Builder imagesBuilder =
+                Rpcs.TrueWirelessHeadsetImages.newBuilder();
+        imagesBuilder.setLeftBudUrl(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        imagesBuilder.setRightBudUrl(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        imagesBuilder.setCaseUrl(TRUE_WIRELESS_IMAGE_URL_CASE);
+        deviceBuilder.setTrueWirelessImages(imagesBuilder.build());
+        deviceBuilder.setImageUrl(IMAGE_URL);
+        deviceBuilder.setIntentUri(INTENT_URI);
+        deviceBuilder.setName(NAME);
+        deviceBuilder.setBleTxPower(BLE_TX_POWER);
+        deviceBuilder.setTriggerDistance(TRIGGER_DISTANCE);
+        deviceBuilder.setDeviceType(Rpcs.DeviceType.HEADPHONES);
+
+        return Rpcs.GetObservedDeviceResponse.newBuilder()
+                .setDevice(deviceBuilder.build())
+                .setImage(ByteString.copyFrom(IMAGE))
+                .setStrings(Rpcs.ObservedDeviceStrings.newBuilder()
+                        .setAssistantSetupHalfSheet(ASSISTANT_SETUP_HALFSHEET)
+                        .setAssistantSetupNotification(ASSISTANT_SETUP_NOTIFICATION)
+                        .setConfirmPinDescription(CONFIRM_PIN_DESCRIPTION)
+                        .setConfirmPinTitle(CONFIRM_PIN_TITLE)
+                        .setConnectSuccessCompanionAppInstalled(
+                                CONNECT_SUCCESS_COMPANION_APP_INSTALLED)
+                        .setConnectSuccessCompanionAppNotInstalled(
+                                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED)
+                        .setDownloadCompanionAppDescription(
+                                DOWNLOAD_COMPANION_APP_DESCRIPTION)
+                        .setFailConnectGoToSettingsDescription(
+                                FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION)
+                        .setFastPairTvConnectDeviceNoAccountDescription(
+                                FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION)
+                        .setInitialNotificationDescription(
+                                INITIAL_NOTIFICATION_DESCRIPTION)
+                        .setInitialNotificationDescriptionNoAccount(
+                                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT)
+                        .setInitialPairingDescription(
+                                INITIAL_PAIRING_DESCRIPTION)
+                        .setLocale(LOCALE)
+                        .setOpenCompanionAppDescription(
+                                OPEN_COMPANION_APP_DESCRIPTION)
+                        .setRetroactivePairingDescription(
+                                RETRO_ACTIVE_PAIRING_DESCRIPTION)
+                        .setSubsequentPairingDescription(
+                                SUBSEQUENT_PAIRING_DESCRIPTION)
+                        .setSyncContactsDescription(
+                                SYNC_CONTACT_DESCRPTION)
+                        .setSyncContactsTitle(
+                                SYNC_CONTACTS_TITLE)
+                        .setSyncSmsDescription(
+                                SYNC_SMS_DESCRIPTION)
+                        .setSyncSmsTitle(
+                                SYNC_SMS_TITLE)
+                        .setUnableToConnectDescription(
+                                UNABLE_TO_CONNECT_DESCRIPTION)
+                        .setUnableToConnectTitle(
+                                UNABLE_TO_CONNECT_TITLE)
+                        .setUpdateCompanionAppDescription(
+                                UPDATE_COMPANION_APP_DESCRIPTION)
+                        .setWaitLaunchCompanionAppDescription(
+                                WAIT_LAUNCH_COMPANION_APP_DESCRIPTION)
+                        .build())
+                .build();
+    }
+
+    private static FastPairAntispoofkeyDeviceMetadataParcel
+            genHappyPathFastPairAntispoofkeyDeviceMetadataParcel() {
+        FastPairAntispoofkeyDeviceMetadataParcel parcel =
+                new FastPairAntispoofkeyDeviceMetadataParcel();
+        parcel.antiSpoofPublicKey = ANTI_SPOOFING_KEY;
+        parcel.deviceMetadata = genHappyPathFastPairDeviceMetadataParcel();
+
+        return parcel;
+    }
+
+    private static FastPairAntispoofkeyDeviceMetadataParcel
+            genFastPairAntispoofkeyDeviceMetadataParcelWithEmptyDeviceMetadata() {
+        FastPairAntispoofkeyDeviceMetadataParcel parcel =
+                new FastPairAntispoofkeyDeviceMetadataParcel();
+        parcel.antiSpoofPublicKey = ANTI_SPOOFING_KEY;
+        parcel.deviceMetadata = genEmptyFastPairDeviceMetadataParcel();
+
+        return parcel;
+    }
+
+    private static FastPairAntispoofkeyDeviceMetadataParcel
+            genEmptyFastPairAntispoofkeyDeviceMetadataParcel() {
+        return new FastPairAntispoofkeyDeviceMetadataParcel();
+    }
+}