add manifest flag unit tests.

firebase-ml-modeldownloader/ml-data-collection-tests/ml-data-collection-tests.gradle

@@ -0,0 +1,52 @@
+// Copyright 2021 Google LLC
+//
+// 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.
+
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    adbOptions {
+        timeOutInMs 60 * 1000
+    }
+
+    compileSdkVersion project.targetSdkVersion
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion project.targetSdkVersion
+        versionName version
+        multiDexEnabled true
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+        }
+    }
+}
+
+dependencies {
+    implementation project(':firebase-common')
+    implementation project(':firebase-ml-modeldownloader')
+    testImplementation 'androidx.test:runner:1.2.0'
+    testImplementation 'androidx.test.ext:junit:1.1.1'
+    testImplementation "org.robolectric:robolectric:$robolectricVersion"
+    testImplementation 'junit:junit:4.12'
+    testImplementation "com.google.truth:truth:$googleTruthVersion"
+    implementation 'androidx.core:core:1.2.0'
+}

firebase-ml-modeldownloader/ml-data-collection-tests/src/main/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2021 Google LLC -->
+<!-- -->
+<!-- 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. -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.google.firebase.ml_data_collection_tests">
+
+<application>
+    <meta-data android:name="firebase_model_downloader_collection_enabled"
+      android:value="false" />
+
+    <service android:name="com.google.firebase.components.ComponentDiscoveryService" android:exported="false">
+      <meta-data
+        android:name="com.google.firebase.components:com.google.firebase.ml.modeldownloader.FirebaseModelDownloaderRegistrar"
+        android:value="com.google.firebase.components.ComponentRegistrar" />
+    </service>
+  </application>
+</manifest>
+

firebase-ml-modeldownloader/ml-data-collection-tests/src/test/java/com/google/firebase/ml_data_collection_tests/MlDataCollectionDefaultDisabledTest.java

@@ -0,0 +1,63 @@
+// Copyright 2021 Google LLC
+//
+// 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.google.firebase.ml_data_collection_tests;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.firebase.ml_data_collection_tests.MlDataCollectionTestUtil.getSharedPreferencesUtil;
+import static com.google.firebase.ml_data_collection_tests.MlDataCollectionTestUtil.setSharedPreferencesTo;
+import static com.google.firebase.ml_data_collection_tests.MlDataCollectionTestUtil.withApp;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class MlDataCollectionDefaultDisabledTest {
+
+  @Test
+  public void isMlDataCollectionDefaultEnabled_whenMetadataFalse_shouldReturnFalse() {
+    withApp(
+        app ->
+            assertThat(getSharedPreferencesUtil(app).getCustomModelStatsCollectionFlag())
+                .isFalse());
+  }
+
+  @Test
+  public void isMlDataCollectionDefaultEnabled_whenMetadataFalseAndPrefsFalse_shouldReturnFalse() {
+    withApp(
+        app -> {
+          setSharedPreferencesTo(app, false);
+          assertThat(getSharedPreferencesUtil(app).getCustomModelStatsCollectionFlag()).isFalse();
+        });
+  }
+
+  @Test
+  public void isMlDataCollectionDefaultEnabled_whenMetadataFalseAndPrefsTrue_shouldReturnTrue() {
+    withApp(
+        app -> {
+          setSharedPreferencesTo(app, true);
+          assertThat(getSharedPreferencesUtil(app).getCustomModelStatsCollectionFlag()).isTrue();
+        });
+  }
+
+  @Test
+  public void isMlDataCollectionDefaultEnabled_whenMetadataFalseAndPrefsNull_shouldReturnFalse() {
+    withApp(
+        app -> {
+          setSharedPreferencesTo(app, null);
+          assertThat(getSharedPreferencesUtil(app).getCustomModelStatsCollectionFlag()).isFalse();
+        });
+  }
+}

firebase-ml-modeldownloader/ml-data-collection-tests/src/test/java/com/google/firebase/ml_data_collection_tests/MlDataCollectionTestUtil.java

@@ -0,0 +1,61 @@
+// Copyright 2021 Google LLC
+//
+// 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.google.firebase.ml_data_collection_tests;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import androidx.test.core.app.ApplicationProvider;
+import com.google.firebase.FirebaseApp;
+import com.google.firebase.FirebaseOptions;
+import com.google.firebase.ml.modeldownloader.internal.SharedPreferencesUtil;
+import java.util.function.Consumer;
+
+final class MlDataCollectionTestUtil {
+  private static final String APP_NAME = "someApp";
+  private static final String APP_ID = "appId";
+  private static final String TEST_PROJECT_ID = "777777777777";
+
+  private static final FirebaseOptions OPTIONS =
+      new FirebaseOptions.Builder().setApplicationId(APP_ID).setProjectId(TEST_PROJECT_ID).build();
+
+  private MlDataCollectionTestUtil() {}
+
+  static void withApp(Consumer<FirebaseApp> callable) {
+    withApp(APP_NAME, callable);
+  }
+
+  static void withApp(String name, Consumer<FirebaseApp> callable) {
+    FirebaseApp app =
+        FirebaseApp.initializeApp(ApplicationProvider.getApplicationContext(), OPTIONS, name);
+    try {
+      callable.accept(app);
+    } finally {
+      app.delete();
+    }
+  }
+
+  static SharedPreferencesUtil getSharedPreferencesUtil(FirebaseApp app) {
+    return new SharedPreferencesUtil(app);
+  }
+
+  static SharedPreferences getSharedPreferences(FirebaseApp app) {
+    return app.getApplicationContext()
+        .getSharedPreferences(SharedPreferencesUtil.PREFERENCES_PACKAGE_NAME, Context.MODE_PRIVATE);
+  }
+
+  static void setSharedPreferencesTo(FirebaseApp app, Boolean enabled) {
+    getSharedPreferencesUtil(app).setCustomModelStatsCollectionEnabled(enabled);
+  }
+}

firebase-ml-modeldownloader/src/main/java/com/google/firebase/ml/modeldownloader/internal/SharedPreferencesUtil.java

@@ -33,7 +33,7 @@
 /** @hide */
 public class SharedPreferencesUtil {
 
-  private static final String FIREBASE_MODELDOWNLOADER_COLLECTION_ENABLED =
+  public static final String FIREBASE_MODELDOWNLOADER_COLLECTION_ENABLED =
       "firebase_model_downloader_collection_enabled";
   public static final String DOWNLOADING_MODEL_ID_MATCHER = "downloading_model_id_(.*?)_([^/]+)/?";
 

subprojects.cfg

@@ -32,6 +32,7 @@ firebase-installations-interop
 firebase-installations
 firebase-installations:ktx
 firebase-ml-modeldownloader
+firebase-ml-modeldownloader:ml-data-collection-tests
 firebase-perf
 firebase-perf:ktx
 firebase-perf:dev-app