diff --git a/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java b/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java
new file mode 100644
index 0000000..6e414d6
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/NearbyServiceTest.java
@@ -0,0 +1,88 @@
+/*
+ * 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;
+
+import android.content.Context;
+import android.nearby.IScanListener;
+import android.nearby.NearbyDeviceParcelable;
+import android.nearby.ScanRequest;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+
+public final class NearbyServiceTest {
+
+    private NearbyService mService;
+    private ScanRequest mScanRequest;
+    @Mock
+    private IScanListener mScanListener;
+
+    @Before
+    public void setup() {
+        Context context = InstrumentationRegistry.getInstrumentation().getContext();
+
+        mService = new NearbyService(context);
+        mScanRequest = createScanRequest();
+        mScanListener = createMockScanListener();
+    }
+
+    @Test
+    public void test_register() {
+        mService.registerScanListener(mScanRequest, mScanListener);
+    }
+
+    @Test
+    public void test_unregister() {
+        mService.unregisterScanListener(mScanListener);
+    }
+
+    private ScanRequest createScanRequest() {
+        return new ScanRequest.Builder()
+                .setScanType(ScanRequest.SCAN_TYPE_FAST_PAIR)
+                .setEnableBle(true)
+                .build();
+    }
+
+    private IScanListener createMockScanListener() {
+        return new IScanListener() {
+            @Override
+            public void onDiscovered(NearbyDeviceParcelable nearbyDeviceParcelable)
+                    throws RemoteException {
+            }
+
+            @Override
+            public void onUpdated(NearbyDeviceParcelable nearbyDeviceParcelable)
+                    throws RemoteException {
+            }
+
+            @Override
+            public void onLost(NearbyDeviceParcelable nearbyDeviceParcelable)
+                    throws RemoteException {
+            }
+
+            @Override
+            public IBinder asBinder() {
+                return null;
+            }
+        };
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/DiscoveryProviderManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/DiscoveryProviderManagerTest.java
new file mode 100644
index 0000000..b34d195
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/DiscoveryProviderManagerTest.java
@@ -0,0 +1,98 @@
+/*
+ * 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 android.bluetooth.BluetoothAdapter;
+import android.content.Context;
+import android.nearby.IScanListener;
+import android.nearby.NearbyDeviceParcelable;
+import android.nearby.ScanRequest;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+import androidx.test.filters.SmallTest;
+
+import com.android.server.nearby.injector.Injector;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+
+@SmallTest
+public final class DiscoveryProviderManagerTest {
+    @Mock
+    private Context mContext;
+    @Mock
+    private BluetoothAdapter mBluetoothAdapter;
+    private TestInjector mInjector;
+    // TODO(b/215435710) NearbyDeviceParcelable Cannot be accessed because it is a system API.
+    // Need to fix this to add more test logic.
+    private DiscoveryProviderManager mManager;
+
+    @Before
+    public void setUp() {
+        mInjector = new TestInjector();
+        mManager = new DiscoveryProviderManager(mContext, mInjector);
+    }
+
+    private class TestInjector implements Injector {
+        @Override
+        public BluetoothAdapter getBluetoothAdapter() {
+            return mBluetoothAdapter;
+        }
+    }
+
+    @Test
+    public void testRegisterListener() throws Exception {
+        IScanListener listener = createMockScanListener();
+        mManager.registerScanListener(createScanRequest(), listener);
+    }
+
+    private ScanRequest createScanRequest() {
+        return new ScanRequest.Builder()
+                .setScanType(ScanRequest.SCAN_TYPE_FAST_PAIR)
+                .setEnableBle(true)
+                .build();
+    }
+
+    private IScanListener createMockScanListener() {
+        return new IScanListener() {
+            @Override
+            public void onDiscovered(NearbyDeviceParcelable nearbyDeviceParcelable)
+                    throws RemoteException {
+
+            }
+
+            @Override
+            public void onUpdated(NearbyDeviceParcelable nearbyDeviceParcelable)
+                    throws RemoteException {
+
+            }
+
+            @Override
+            public void onLost(NearbyDeviceParcelable nearbyDeviceParcelable)
+                    throws RemoteException {
+
+            }
+
+            @Override
+            public IBinder asBinder() {
+                return null;
+            }
+        };
+    }
+}