diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index b5549b8..ff3f650 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -986,6 +986,18 @@
                 android:value="true" />
         </activity>
 
+        <activity android:name=".Settings$ModuleLicensesActivity"
+                  android:label="@string/module_license_title">
+            <intent-filter>
+                <action android:name="android.settings.MODULE_LICENSES" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.deviceinfo.legal.ModuleLicensesDashboard" />
+            <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
+                       android:value="true" />
+        </activity>
+
         <activity
             android:name="Settings$ManageApplicationsActivity"
             android:label="@string/applications_settings">
@@ -2663,6 +2675,12 @@
                 android:resource="@xml/file_paths" />
         </provider>
 
+        <provider
+            android:name=".deviceinfo.legal.ModuleLicenseProvider"
+            android:authorities="com.android.settings.module_licenses"
+            android:grantUriPermissions="true"
+            android:exported="false"/>
+
         <activity android:name=".sim.SimPreferenceDialog"
             android:theme="@style/Theme.AlertDialog"
             android:excludeFromRecents="true" />
diff --git a/res/xml/about_legal.xml b/res/xml/about_legal.xml
index c86276a..90b1985 100644
--- a/res/xml/about_legal.xml
+++ b/res/xml/about_legal.xml
@@ -42,6 +42,13 @@
         android:title="@string/terms_title"
         settings:controller="com.android.settings.deviceinfo.legal.TermsPreferenceController" />
 
+    <!-- Mainline Module License information -->
+    <Preference
+        android:key="module_license"
+        android:title="@string/module_license_title"
+        android:fragment="com.android.settings.deviceinfo.legal.ModuleLicensesDashboard"
+        settings:controller="com.android.settings.deviceinfo.legal.ModuleLicensesListPreferenceController" />
+
     <!-- System WebView License information -->
     <Preference
         android:key="webview_license"
diff --git a/res/xml/module_licenses.xml b/res/xml/module_licenses.xml
new file mode 100644
index 0000000..005b483
--- /dev/null
+++ b/res/xml/module_licenses.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2019 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
+  -->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"
+    android:key="module_licenses"
+    android:title="@string/module_license_title">
+    <PreferenceCategory
+        android:key="module_licenses_category"
+        android:layout="@layout/preference_category_no_label"
+        android:title="@string/summary_placeholder"
+        settings:controller="com.android.settings.deviceinfo.legal.ModuleLicensesPreferenceController" />
+</PreferenceScreen>
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index b4ebc57..ab59da4 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -56,6 +56,7 @@
     public static class NightDisplaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class NightDisplaySuggestionActivity extends NightDisplaySettingsActivity { /* empty */ }
     public static class MyDeviceInfoActivity extends SettingsActivity { /* empty */ }
+    public static class ModuleLicensesActivity extends SettingsActivity { /* empty */ }
     public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ManageApplicationsActivity extends SettingsActivity { /* empty */ }
     public static class ManageAssistActivity extends SettingsActivity { /* empty */ }
diff --git a/src/com/android/settings/core/gateway/SettingsGateway.java b/src/com/android/settings/core/gateway/SettingsGateway.java
index b35a974..5a81e71 100644
--- a/src/com/android/settings/core/gateway/SettingsGateway.java
+++ b/src/com/android/settings/core/gateway/SettingsGateway.java
@@ -72,6 +72,7 @@
 import com.android.settings.deviceinfo.StorageSettings;
 import com.android.settings.deviceinfo.aboutphone.MyDeviceInfoFragment;
 import com.android.settings.deviceinfo.firmwareversion.FirmwareVersionSettings;
+import com.android.settings.deviceinfo.legal.ModuleLicensesDashboard;
 import com.android.settings.display.NightDisplaySettings;
 import com.android.settings.dream.DreamSettings;
 import com.android.settings.enterprise.EnterprisePrivacySettings;
@@ -175,6 +176,7 @@
             UserDictionarySettings.class.getName(),
             DisplaySettings.class.getName(),
             MyDeviceInfoFragment.class.getName(),
+            ModuleLicensesDashboard.class.getName(),
             ManageApplications.class.getName(),
             FirmwareVersionSettings.class.getName(),
             ManageAssist.class.getName(),
@@ -318,6 +320,7 @@
             Settings.DateTimeSettingsActivity.class.getName(),
             Settings.EnterprisePrivacySettingsActivity.class.getName(),
             Settings.MyDeviceInfoActivity.class.getName(),
+            Settings.ModuleLicensesActivity.class.getName(),
             UserBackupSettingsActivity.class.getName(),
     };
 }
diff --git a/src/com/android/settings/deviceinfo/legal/ModuleLicensePreference.java b/src/com/android/settings/deviceinfo/legal/ModuleLicensePreference.java
new file mode 100644
index 0000000..e012275
--- /dev/null
+++ b/src/com/android/settings/deviceinfo/legal/ModuleLicensePreference.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ModuleInfo;
+import android.util.Log;
+import android.widget.Toast;
+
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+
+/**
+ * Preference in a list that represents a mainline module that has a licenses file.
+ */
+public class ModuleLicensePreference extends Preference {
+    private static final String TAG = "ModuleLicensePreference";
+    private final ModuleInfo mModule;
+
+    public ModuleLicensePreference(Context context, ModuleInfo module) {
+        super(context);
+        mModule = module;
+        setKey(module.getPackageName());
+        setTitle(module.getName());
+    }
+
+    @Override
+    protected void onClick() {
+        // Kick off external viewer due to WebView security restrictions (Settings cannot use
+        // WebView because it is UID 1000).
+        Intent intent = new Intent(Intent.ACTION_VIEW)
+                .setDataAndType(
+                        ModuleLicenseProvider.getUriForPackage(mModule.getPackageName()),
+                        ModuleLicenseProvider.LICENSE_FILE_MIME_TYPE)
+                .putExtra(Intent.EXTRA_TITLE, mModule.getName())
+                .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                .addCategory(Intent.CATEGORY_DEFAULT)
+                .setPackage("com.android.htmlviewer");
+        try {
+            getContext().startActivity(intent);
+        } catch (ActivityNotFoundException e) {
+            Log.e(TAG, "Failed to find viewer", e);
+            showError();
+        }
+    }
+
+    private void showError() {
+        Toast.makeText(
+                getContext(), R.string.settings_license_activity_unavailable, Toast.LENGTH_LONG)
+                .show();
+    }
+}
diff --git a/src/com/android/settings/deviceinfo/legal/ModuleLicenseProvider.java b/src/com/android/settings/deviceinfo/legal/ModuleLicenseProvider.java
new file mode 100644
index 0000000..6731c69
--- /dev/null
+++ b/src/com/android/settings/deviceinfo/legal/ModuleLicenseProvider.java
@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import android.content.ContentProvider;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.res.AssetManager;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.ParcelFileDescriptor;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.core.util.Preconditions;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+
+public class ModuleLicenseProvider extends ContentProvider {
+    private static final String TAG = "ModuleLicenseProvider";
+
+    public static final String AUTHORITY = "com.android.settings.module_licenses";
+    static final String GZIPPED_LICENSE_FILE_NAME = "NOTICE.html.gz";
+    static final String LICENSE_FILE_NAME = "NOTICE.html";
+    static final String LICENSE_FILE_MIME_TYPE = "text/html";
+    static final String PREFS_NAME = "ModuleLicenseProvider";
+
+    @Override
+    public boolean onCreate() {
+        return true;
+    }
+
+    @Override
+    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
+            String sortOrder) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public String getType(Uri uri) {
+        checkUri(getContext(), uri);
+        return LICENSE_FILE_MIME_TYPE;
+    }
+
+    @Override
+    public Uri insert(Uri uri, ContentValues values) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public int delete(Uri uri, String selection, String[] selectionArgs) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public ParcelFileDescriptor openFile(Uri uri, String mode) {
+        final Context context = getContext();
+        checkUri(context, uri);
+        Preconditions.checkArgument("r".equals(mode), "Read is the only supported mode");
+
+        try {
+            String packageName = uri.getPathSegments().get(0);
+            File cachedFile = getCachedHtmlFile(context, packageName);
+            if (isCachedHtmlFileOutdated(context, packageName)) {
+                try (InputStream in = new GZIPInputStream(
+                        getPackageAssetManager(context.getPackageManager(), packageName)
+                                .open(GZIPPED_LICENSE_FILE_NAME))) {
+                    File directory = getCachedFileDirectory(context, packageName);
+                    if (!directory.exists()) {
+                        directory.mkdir();
+                    }
+                    Files.copy(in, cachedFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
+                }
+                // Now that the file is saved, write the package's version code to shared prefs
+                SharedPreferences.Editor editor = getPrefs(context).edit();
+                editor.putLong(
+                        packageName,
+                        getPackageInfo(context, packageName).getLongVersionCode())
+                                .commit();
+            }
+            return ParcelFileDescriptor.open(cachedFile, ParcelFileDescriptor.MODE_READ_ONLY);
+        } catch (PackageManager.NameNotFoundException e) {
+            Log.wtf(TAG, "checkUri should have already caught this error", e);
+        } catch (IOException e) {
+            Log.e(TAG, "Could not open file descriptor", e);
+        }
+        return null;
+    }
+
+    /**
+     * Returns true if the cached file for the given package is outdated. A cached file is
+     * outdated if one of the following are true:
+     * 1. the shared prefs does not contain a version code for this package
+     * 2. The version code does not match the package's version code
+     * 3. There is no file or the file is empty.
+     */
+    @VisibleForTesting
+    static boolean isCachedHtmlFileOutdated(Context context, String packageName)
+            throws PackageManager.NameNotFoundException {
+        SharedPreferences prefs = getPrefs(context);
+        File file = getCachedHtmlFile(context, packageName);
+        return !prefs.contains(packageName)
+                || prefs.getLong(packageName, 0L)
+                        != getPackageInfo(context, packageName).getLongVersionCode()
+                || !file.exists() || file.length() == 0;
+    }
+
+    static AssetManager getPackageAssetManager(PackageManager packageManager, String packageName)
+            throws PackageManager.NameNotFoundException {
+        return packageManager.getResourcesForApplication(
+                packageManager.getPackageInfo(packageName, PackageManager.MATCH_APEX)
+                        .applicationInfo)
+                                .getAssets();
+    }
+
+    static Uri getUriForPackage(String packageName) {
+        return new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(AUTHORITY)
+                .appendPath(packageName)
+                .appendPath(LICENSE_FILE_NAME)
+                .build();
+    }
+
+    private static void checkUri(Context context, Uri uri) {
+        List<String> pathSegments = uri.getPathSegments();
+        // A URI is valid iff it:
+        // 1. is a content URI
+        // 2. uses the correct authority
+        // 3. has exactly 2 segments and the last one is NOTICE.html
+        // 4. (checked below) first path segment is the package name of a module
+        if (!ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())
+                || !AUTHORITY.equals(uri.getAuthority())
+                || pathSegments == null
+                || pathSegments.size() != 2
+                || !LICENSE_FILE_NAME.equals(pathSegments.get(1))) {
+            throw new IllegalArgumentException(uri + "is not a valid URI");
+        }
+        // Grab the first path segment, which is the package name of the module and make sure that
+        // there's actually a module for that package. getModuleInfo will throw if it does not
+        // exist.
+        try {
+            context.getPackageManager().getModuleInfo(pathSegments.get(0), 0 /* flags */);
+        } catch (PackageManager.NameNotFoundException e) {
+            throw new IllegalArgumentException(uri + "is not a valid URI", e);
+        }
+    }
+
+    private static File getCachedFileDirectory(Context context, String packageName) {
+        return new File(context.getCacheDir(), packageName);
+    }
+
+    private static File getCachedHtmlFile(Context context, String packageName) {
+        return new File(context.getCacheDir() + "/" + packageName, LICENSE_FILE_NAME);
+    }
+
+    private static  PackageInfo getPackageInfo(Context context, String packageName)
+            throws PackageManager.NameNotFoundException {
+        return context.getPackageManager().getPackageInfo(packageName, PackageManager.MATCH_APEX);
+    }
+
+    private static SharedPreferences getPrefs(Context context) {
+        return context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+    }
+}
diff --git a/src/com/android/settings/deviceinfo/legal/ModuleLicensesDashboard.java b/src/com/android/settings/deviceinfo/legal/ModuleLicensesDashboard.java
new file mode 100644
index 0000000..f74b68f
--- /dev/null
+++ b/src/com/android/settings/deviceinfo/legal/ModuleLicensesDashboard.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import android.app.settings.SettingsEnums;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+
+public class ModuleLicensesDashboard extends DashboardFragment {
+    private static final String TAG = "ModuleLicensesDashboard";
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.MODULE_LICENSES_DASHBOARD;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.module_licenses;
+    }
+
+    @Override
+    public int getHelpResource() {
+        return 0;
+    }
+}
diff --git a/src/com/android/settings/deviceinfo/legal/ModuleLicensesListPreferenceController.java b/src/com/android/settings/deviceinfo/legal/ModuleLicensesListPreferenceController.java
new file mode 100644
index 0000000..9faff85
--- /dev/null
+++ b/src/com/android/settings/deviceinfo/legal/ModuleLicensesListPreferenceController.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import android.content.Context;
+import android.content.pm.ModuleInfo;
+import android.content.pm.PackageManager;
+
+import com.android.settings.core.BasePreferenceController;
+
+import java.util.List;
+
+public class ModuleLicensesListPreferenceController extends BasePreferenceController {
+    public ModuleLicensesListPreferenceController(Context context,
+            String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        PackageManager packageManager = mContext.getPackageManager();
+        List<ModuleInfo> modules = packageManager.getInstalledModules(0 /* flags */);
+        return modules.stream().anyMatch(new ModuleLicensesPreferenceController.Predicate(mContext))
+                ? AVAILABLE
+                : CONDITIONALLY_UNAVAILABLE;
+    }
+}
diff --git a/src/com/android/settings/deviceinfo/legal/ModuleLicensesPreferenceController.java b/src/com/android/settings/deviceinfo/legal/ModuleLicensesPreferenceController.java
new file mode 100644
index 0000000..dd5edbb
--- /dev/null
+++ b/src/com/android/settings/deviceinfo/legal/ModuleLicensesPreferenceController.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import android.content.Context;
+import android.content.pm.ModuleInfo;
+import android.content.pm.PackageManager;
+
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceScreen;
+
+import com.android.internal.util.ArrayUtils;
+import com.android.settings.core.BasePreferenceController;
+
+import java.io.IOException;
+import java.util.Comparator;
+import java.util.List;
+
+public class ModuleLicensesPreferenceController extends BasePreferenceController {
+    public ModuleLicensesPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE_UNSEARCHABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        PackageManager packageManager = mContext.getPackageManager();
+        List<ModuleInfo> modules = packageManager.getInstalledModules(0 /* flags */);
+        PreferenceGroup group = screen.findPreference(getPreferenceKey());
+        modules.stream()
+                .sorted(Comparator.comparing(o -> o.getName().toString()))
+                .filter(new Predicate(mContext))
+                .forEach(module ->
+                        group.addPreference(
+                                new ModuleLicensePreference(group.getContext(), module)));
+    }
+
+    static class Predicate implements java.util.function.Predicate<ModuleInfo> {
+        private final Context mContext;
+
+        public Predicate(Context context) {
+            mContext = context;
+        }
+        @Override
+        public boolean test(ModuleInfo module) {
+            try {
+                return ArrayUtils.contains(
+                        ModuleLicenseProvider.getPackageAssetManager(
+                                mContext.getPackageManager(),
+                                module.getPackageName())
+                                        .list(""),
+                        ModuleLicenseProvider.GZIPPED_LICENSE_FILE_NAME);
+            } catch (IOException | PackageManager.NameNotFoundException e) {
+                return false;
+            }
+        }
+    }
+}
diff --git a/tests/robotests/assets/grandfather_not_implementing_index_provider b/tests/robotests/assets/grandfather_not_implementing_index_provider
index b950f30..061a81e 100644
--- a/tests/robotests/assets/grandfather_not_implementing_index_provider
+++ b/tests/robotests/assets/grandfather_not_implementing_index_provider
@@ -33,6 +33,7 @@
 com.android.settings.deviceinfo.PrivateVolumeSettings
 com.android.settings.deviceinfo.PublicVolumeSettings
 com.android.settings.deviceinfo.StorageProfileFragment
+com.android.settings.deviceinfo.legal.ModuleLicensesDashboard
 com.android.settings.enterprise.ApplicationListFragment$AdminGrantedPermissionCamera
 com.android.settings.enterprise.ApplicationListFragment$AdminGrantedPermissionLocation
 com.android.settings.enterprise.ApplicationListFragment$AdminGrantedPermissionMicrophone
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensePreferenceTest.java b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensePreferenceTest.java
new file mode 100644
index 0000000..cdf082f
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensePreferenceTest.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ModuleInfo;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.Robolectric;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.shadows.ShadowApplication;
+
+@RunWith(RobolectricTestRunner.class)
+public class ModuleLicensePreferenceTest {
+    public static final String PACKAGE_NAME = "com.android.test_package";
+    public static final String NAME = "Test Package";
+    private Context mContext;
+    private ModuleInfo mModuleInfo;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = Robolectric.setupActivity(Activity.class);
+        mModuleInfo = new ModuleInfo();
+        mModuleInfo.setPackageName(PACKAGE_NAME);
+        mModuleInfo.setName(NAME);
+    }
+
+    @Test
+    public void ctor_properKeyAndTitle() {
+        ModuleLicensePreference pref = new ModuleLicensePreference(mContext, mModuleInfo);
+
+        assertThat(pref.getKey()).isEqualTo(PACKAGE_NAME);
+        assertThat(pref.getTitle()).isEqualTo(NAME);
+    }
+
+    @Test
+    public void onClick_sendsCorrectIntent() {
+        ModuleLicensePreference pref = new ModuleLicensePreference(mContext, mModuleInfo);
+
+        pref.onClick();
+
+        Intent intent = ShadowApplication.getInstance().getNextStartedActivity();
+        assertThat(intent.getAction()).isEqualTo(Intent.ACTION_VIEW);
+        assertThat(intent.getData())
+                .isEqualTo(ModuleLicenseProvider.getUriForPackage(PACKAGE_NAME));
+        assertThat(intent.getType()).isEqualTo(ModuleLicenseProvider.LICENSE_FILE_MIME_TYPE);
+        assertThat(intent.getCharSequenceExtra(Intent.EXTRA_TITLE)).isEqualTo(NAME);
+        assertThat(intent.getFlags()).isEqualTo(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+        assertThat(intent.getCategories()).contains(Intent.CATEGORY_DEFAULT);
+        assertThat(intent.getPackage()).isEqualTo("com.android.htmlviewer");
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicenseProviderTest.java b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicenseProviderTest.java
new file mode 100644
index 0000000..b65137b
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicenseProviderTest.java
@@ -0,0 +1,393 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import static com.android.settings.deviceinfo.legal.ModuleLicenseProvider.LICENSE_FILE_NAME;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.ModuleInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.res.AssetFileDescriptor;
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+import android.net.Uri;
+import android.os.ParcelFileDescriptor;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+
+@RunWith(RobolectricTestRunner.class)
+public class ModuleLicenseProviderTest {
+    public static final String PACKAGE_NAME = "com.android.test_package";
+    @Test
+    public void onCreate_returnsTrue() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        assertThat(provider.onCreate()).isTrue();
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void query_throwsUnsupportedOperationException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.query(null, null, null, null, null);
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void insert_throwsUnsupportedOperationException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.insert(null, null);
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void delete_throwsUnsupportedOperationException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.delete(null, null, null);
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void update_throwsUnsupportedOperationException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.update(null, null, null, null);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_notContentScheme_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.getType(new Uri.Builder()
+                .scheme("badscheme")
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_invalidAuthority_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority("notmyauthority")
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_emptyPath_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .build());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_missingPackageName_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(LICENSE_FILE_NAME)
+                .build());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_missingFileName_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .build());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_incorrectFileName_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath("badname.txt")
+                .build());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getType_packageNotAModule_throwsIllegalArgumentException()
+            throws PackageManager.NameNotFoundException {
+        ModuleLicenseProvider provider = spy(new ModuleLicenseProvider());
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(provider.getContext()).thenReturn(context);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        when(packageManager.getModuleInfo(PACKAGE_NAME, 0))
+                .thenThrow(new PackageManager.NameNotFoundException());
+
+        provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build());
+    }
+
+    @Test
+    public void getType_validUri_returnsHtmlMimeType()
+            throws PackageManager.NameNotFoundException {
+        ModuleLicenseProvider provider = spy(new ModuleLicenseProvider());
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(provider.getContext()).thenReturn(context);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        when(packageManager.getModuleInfo(PACKAGE_NAME, 0))
+                .thenReturn(new ModuleInfo());
+
+        assertThat(provider.getType(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build())).isEqualTo(ModuleLicenseProvider.LICENSE_FILE_MIME_TYPE);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_notContentScheme_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.openFile(new Uri.Builder()
+                .scheme("badscheme")
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_invalidAuthority_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority("notmyauthority")
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_emptyPath_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_missingPackageName_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(LICENSE_FILE_NAME)
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_missingFileName_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_incorrectFileName_throwsIllegalArgumentException() {
+        ModuleLicenseProvider provider = new ModuleLicenseProvider();
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath("badname.txt")
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_packageNotAModule_throwsIllegalArgumentException()
+            throws PackageManager.NameNotFoundException {
+        ModuleLicenseProvider provider = spy(new ModuleLicenseProvider());
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(provider.getContext()).thenReturn(context);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        when(packageManager.getModuleInfo(PACKAGE_NAME, 0))
+                .thenThrow(new PackageManager.NameNotFoundException());
+
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build(), "r");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void openFile_validUri_notReadMode_throwsIllegalArgumentException()
+            throws PackageManager.NameNotFoundException {
+        ModuleLicenseProvider provider = spy(new ModuleLicenseProvider());
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(provider.getContext()).thenReturn(context);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        when(packageManager.getModuleInfo(PACKAGE_NAME, 0))
+                .thenReturn(new ModuleInfo());
+
+        provider.openFile(new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(ModuleLicenseProvider.AUTHORITY)
+                .appendPath(PACKAGE_NAME)
+                .appendPath(LICENSE_FILE_NAME)
+                .build(), "badmode");
+    }
+
+    @Test
+    public void isCachedHtmlFileOutdated_packageNotInSharedPrefs_returnTrue()
+            throws PackageManager.NameNotFoundException {
+        Context context = RuntimeEnvironment.application;
+        context.getSharedPreferences(ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit().clear().commit();
+
+        assertThat(ModuleLicenseProvider.isCachedHtmlFileOutdated(context, PACKAGE_NAME)).isTrue();
+    }
+
+    @Test
+    public void isCachedHtmlFileOutdated_versionCodeDiffersFromSharedPref_returnTrue()
+            throws PackageManager.NameNotFoundException {
+        Context context = spy(RuntimeEnvironment.application);
+        SharedPreferences.Editor editor = context.getSharedPreferences(
+                ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit();
+        editor.clear().commit();
+        editor.putLong(PACKAGE_NAME, 900L).commit();
+        PackageManager packageManager = mock(PackageManager.class);
+        doReturn(packageManager).when(context).getPackageManager();
+        PackageInfo packageInfo = new PackageInfo();
+        packageInfo.setLongVersionCode(1000L);
+        when(packageManager.getPackageInfo(PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+
+        assertThat(ModuleLicenseProvider.isCachedHtmlFileOutdated(context, PACKAGE_NAME)).isTrue();
+    }
+
+    @Test
+    public void isCachedHtmlFileOutdated_fileDoesNotExist_returnTrue()
+            throws PackageManager.NameNotFoundException {
+        Context context = spy(RuntimeEnvironment.application);
+        context.getSharedPreferences(ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit().clear().commit();
+        SharedPreferences.Editor editor = context.getSharedPreferences(
+                ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit();
+        editor.clear().commit();
+        editor.putLong(PACKAGE_NAME, 1000L).commit();
+        PackageManager packageManager = mock(PackageManager.class);
+        doReturn(packageManager).when(context).getPackageManager();
+        PackageInfo packageInfo = new PackageInfo();
+        packageInfo.setLongVersionCode(1000L);
+        when(packageManager.getPackageInfo(PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+        new File(context.getCacheDir() + "/" + PACKAGE_NAME, LICENSE_FILE_NAME).delete();
+
+        assertThat(ModuleLicenseProvider.isCachedHtmlFileOutdated(context, PACKAGE_NAME)).isTrue();
+    }
+
+    @Test
+    public void isCachedHtmlFileOutdated_fileIsEmpty_returnTrue()
+            throws PackageManager.NameNotFoundException, IOException {
+        Context context = spy(RuntimeEnvironment.application);
+        context.getSharedPreferences(ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit().clear().commit();
+        SharedPreferences.Editor editor = context.getSharedPreferences(
+                ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit();
+        editor.clear().commit();
+        editor.putLong(PACKAGE_NAME, 1000L).commit();
+        PackageManager packageManager = mock(PackageManager.class);
+        doReturn(packageManager).when(context).getPackageManager();
+        PackageInfo packageInfo = new PackageInfo();
+        packageInfo.setLongVersionCode(1000L);
+        when(packageManager.getPackageInfo(PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+        new File(context.getCacheDir(), PACKAGE_NAME).mkdir();
+        File file = new File(context.getCacheDir() + "/" + PACKAGE_NAME, LICENSE_FILE_NAME);
+        file.delete();
+        file.createNewFile();
+
+        assertThat(ModuleLicenseProvider.isCachedHtmlFileOutdated(context, PACKAGE_NAME)).isTrue();
+    }
+
+    @Test
+    public void isCachedHtmlFileOutdated_notOutdated_returnFalse()
+            throws PackageManager.NameNotFoundException, IOException {
+        Context context = spy(RuntimeEnvironment.application);
+        context.getSharedPreferences(ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit().clear().commit();
+        SharedPreferences.Editor editor = context.getSharedPreferences(
+                ModuleLicenseProvider.PREFS_NAME, Context.MODE_PRIVATE)
+                .edit();
+        editor.clear().commit();
+        editor.putLong(PACKAGE_NAME, 1000L).commit();
+        PackageManager packageManager = mock(PackageManager.class);
+        doReturn(packageManager).when(context).getPackageManager();
+        PackageInfo packageInfo = new PackageInfo();
+        packageInfo.setLongVersionCode(1000L);
+        when(packageManager.getPackageInfo(PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+        new File(context.getCacheDir(), PACKAGE_NAME).mkdir();
+        File file = new File(context.getCacheDir() + "/" + PACKAGE_NAME, LICENSE_FILE_NAME);
+        file.delete();
+        file.createNewFile();
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
+            writer.write("test");
+        }
+
+        assertThat(ModuleLicenseProvider.isCachedHtmlFileOutdated(context, PACKAGE_NAME)).isFalse();
+    }
+
+    @Test
+    public void getUriForPackage_returnsProperlyFormattedUri() {
+        assertThat(ModuleLicenseProvider.getUriForPackage(PACKAGE_NAME))
+                .isEqualTo(Uri.parse("content://com.android.settings.module_licenses/com.android.test_package/NOTICE.html"));
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensesListPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensesListPreferenceControllerTest.java
new file mode 100644
index 0000000..0ca22fb
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensesListPreferenceControllerTest.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import static com.android.settings.deviceinfo.legal.ModuleLicenseProvider.GZIPPED_LICENSE_FILE_NAME;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.ModuleInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+
+import com.android.settings.core.BasePreferenceController;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+import java.io.IOException;
+import java.util.Collections;
+
+@RunWith(RobolectricTestRunner.class)
+public class ModuleLicensesListPreferenceControllerTest {
+    private static final String PREFERENCE_KEY = "key";
+    private static final String PACKAGE_NAME = "com.android.test_package";
+
+    @Test
+    public void getAvailabilityStatus_validLicenses_returnsAvailable()
+            throws PackageManager.NameNotFoundException, IOException {
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        ModuleInfo moduleInfo = new ModuleInfo();
+        moduleInfo.setPackageName(PACKAGE_NAME);
+        when(packageManager.getInstalledModules(0))
+                .thenReturn(Collections.singletonList(moduleInfo));
+        PackageInfo packageInfo = new PackageInfo();
+        ApplicationInfo applicationInfo = new ApplicationInfo();
+        packageInfo.applicationInfo = applicationInfo;
+        when(packageManager.getPackageInfo(PACKAGE_NAME, PackageManager.MATCH_APEX)).thenReturn(
+                packageInfo);
+        Resources resources = mock(Resources.class);
+        when(packageManager.getResourcesForApplication(applicationInfo)).thenReturn(resources);
+        AssetManager manager = mock(AssetManager.class);
+        when(resources.getAssets()).thenReturn(manager);
+        when(manager.list("")).thenReturn(new String[]{GZIPPED_LICENSE_FILE_NAME});
+
+        ModuleLicensesListPreferenceController controller =
+                new ModuleLicensesListPreferenceController(context, PREFERENCE_KEY);
+        assertThat(controller.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_noModules_returnsConditionallyUnavailable() {
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        when(packageManager.getInstalledModules(0))
+                .thenReturn(Collections.emptyList());
+
+        ModuleLicensesListPreferenceController controller =
+                new ModuleLicensesListPreferenceController(context, PREFERENCE_KEY);
+        assertThat(controller.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_noLicenses_returnsConditionallyUnavailable()
+            throws PackageManager.NameNotFoundException, IOException {
+        Context context = mock(Context.class);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        ModuleInfo moduleInfo = new ModuleInfo();
+        moduleInfo.setPackageName(PACKAGE_NAME);
+        when(packageManager.getInstalledModules(0))
+                .thenReturn(Collections.singletonList(moduleInfo));
+        PackageInfo packageInfo = new PackageInfo();
+        ApplicationInfo applicationInfo = new ApplicationInfo();
+        packageInfo.applicationInfo = applicationInfo;
+        when(packageManager.getPackageInfo(PACKAGE_NAME, PackageManager.MATCH_APEX)).thenReturn(
+                packageInfo);
+        Resources resources = mock(Resources.class);
+        when(packageManager.getResourcesForApplication(applicationInfo)).thenReturn(resources);
+        AssetManager manager = mock(AssetManager.class);
+        when(resources.getAssets()).thenReturn(manager);
+        when(manager.list("")).thenReturn(new String[]{});
+
+        ModuleLicensesListPreferenceController controller =
+                new ModuleLicensesListPreferenceController(context, PREFERENCE_KEY);
+        assertThat(controller.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensesPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensesPreferenceControllerTest.java
new file mode 100644
index 0000000..bf1b01e
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/deviceinfo/legal/ModuleLicensesPreferenceControllerTest.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import static com.android.settings.deviceinfo.legal.ModuleLicenseProvider.GZIPPED_LICENSE_FILE_NAME;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.ModuleInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+import android.util.AttributeSet;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceManager;
+import androidx.preference.PreferenceScreen;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+@RunWith(RobolectricTestRunner.class)
+public class ModuleLicensesPreferenceControllerTest {
+
+    private static final String PREFERENCE_KEY = "key";
+    private static final String MODULE_1_NAME = "Module 1";
+    private static final String MODULE_1_PACKAGE_NAME = "com.android.module_one";
+    private static final String MODULE_2_NAME = "Module 2";
+    private static final String MODULE_2_PACKAGE_NAME = "com.android.module_two";
+    private ModuleInfo mModuleOne;
+    private ModuleInfo mModuleTwo;
+
+    @Before
+    public void setUp() {
+        mModuleOne = new ModuleInfo();
+        mModuleOne.setName(MODULE_1_NAME);
+        mModuleOne.setPackageName(MODULE_1_PACKAGE_NAME);
+        mModuleTwo = new ModuleInfo();
+        mModuleTwo.setName(MODULE_2_NAME);
+        mModuleTwo.setPackageName(MODULE_2_PACKAGE_NAME);
+    }
+
+    @Test
+    public void displayPreference_alphabeticalOrder()
+            throws PackageManager.NameNotFoundException, IOException {
+        Context context = mock(Context.class);
+        ModuleLicensesPreferenceController controller =
+                new ModuleLicensesPreferenceController(context, PREFERENCE_KEY);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        PreferenceScreen screen = mock(PreferenceScreen.class);
+        PreferenceGroup group = spy(new MockPreferenceGroup(RuntimeEnvironment.application, null));
+        when(screen.findPreference(PREFERENCE_KEY)).thenReturn(group);
+        when(group.getPreferenceManager()).thenReturn(mock(PreferenceManager.class));
+        when(packageManager.getInstalledModules(0))
+                .thenReturn(Arrays.asList(mModuleTwo, mModuleOne));
+        PackageInfo packageInfo = new PackageInfo();
+        ApplicationInfo applicationInfo = new ApplicationInfo();
+        packageInfo.applicationInfo = applicationInfo;
+        when(packageManager.getPackageInfo(MODULE_1_PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+        when(packageManager.getPackageInfo(MODULE_2_PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+        Resources resources = mock(Resources.class);
+        when(packageManager.getResourcesForApplication(applicationInfo)).thenReturn(resources);
+        AssetManager manager = mock(AssetManager.class);
+        when(resources.getAssets()).thenReturn(manager);
+        when(manager.list("")).thenReturn(new String[]{GZIPPED_LICENSE_FILE_NAME});
+
+        controller.displayPreference(screen);
+
+        assertThat(group.getPreferenceCount()).isEqualTo(2);
+        assertThat(group.getPreference(0).getTitle()).isEqualTo(MODULE_1_NAME);
+        assertThat(group.getPreference(1).getTitle()).isEqualTo(MODULE_2_NAME);
+    }
+
+    @Test
+    public void displayPreference_includeOnlyModulesWithLicenseFile()
+            throws PackageManager.NameNotFoundException, IOException {
+        Context context = mock(Context.class);
+        ModuleLicensesPreferenceController controller =
+                new ModuleLicensesPreferenceController(context, PREFERENCE_KEY);
+        PackageManager packageManager = mock(PackageManager.class);
+        when(context.getPackageManager()).thenReturn(packageManager);
+        PreferenceScreen screen = mock(PreferenceScreen.class);
+        PreferenceGroup group = spy(new MockPreferenceGroup(RuntimeEnvironment.application, null));
+        when(screen.findPreference(PREFERENCE_KEY)).thenReturn(group);
+        when(group.getPreferenceManager()).thenReturn(mock(PreferenceManager.class));
+        when(packageManager.getInstalledModules(0))
+                .thenReturn(Arrays.asList(mModuleTwo, mModuleOne));
+        PackageInfo packageInfo = new PackageInfo();
+        ApplicationInfo applicationInfo = new ApplicationInfo();
+        packageInfo.applicationInfo = applicationInfo;
+        when(packageManager.getPackageInfo(MODULE_1_PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo);
+        Resources resources = mock(Resources.class);
+        when(packageManager.getResourcesForApplication(applicationInfo)).thenReturn(resources);
+        AssetManager manager = mock(AssetManager.class);
+        when(resources.getAssets()).thenReturn(manager);
+        when(manager.list("")).thenReturn(new String[]{GZIPPED_LICENSE_FILE_NAME});
+        PackageInfo packageInfo2 = new PackageInfo();
+        ApplicationInfo applicationInfo2 = new ApplicationInfo();
+        packageInfo2.applicationInfo = applicationInfo2;
+        when(packageManager.getPackageInfo(MODULE_2_PACKAGE_NAME, PackageManager.MATCH_APEX))
+                .thenReturn(packageInfo2);
+        Resources resources2 = mock(Resources.class);
+        when(packageManager.getResourcesForApplication(applicationInfo2)).thenReturn(resources2);
+        AssetManager manager2 = mock(AssetManager.class);
+        when(resources2.getAssets()).thenReturn(manager2);
+        when(manager2.list("")).thenReturn(new String[]{});
+
+        controller.displayPreference(screen);
+
+        assertThat(group.getPreferenceCount()).isEqualTo(1);
+        assertThat(group.getPreference(0).getTitle()).isEqualTo(MODULE_1_NAME);
+    }
+
+    private static class MockPreferenceGroup extends PreferenceGroup {
+        List<Preference> mList = new ArrayList<>();
+
+        public MockPreferenceGroup(Context context, AttributeSet attrs) {
+            super(context, attrs);
+        }
+
+        @Override
+        public boolean addPreference(Preference preference) {
+            mList.add(preference);
+            return true;
+        }
+
+        @Override
+        public int getPreferenceCount() {
+            return mList.size();
+        }
+
+        @Override
+        public Preference getPreference(int index) {
+            return mList.get(index);
+        }
+    }
+}