Add contract test for CronetDataSource

PiperOrigin-RevId: 353290124

extensions/cronet/build.gradle

@@ -13,12 +13,25 @@
 // limitations under the License.
 apply from: "$gradle.ext.exoplayerSettingsDir/common_library_config.gradle"
 
+android {
+    defaultConfig {
+        multiDexEnabled true
+    }
+}
+
 dependencies {
     api "com.google.android.gms:play-services-cronet:17.0.0"
     implementation project(modulePrefix + 'library-core')
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
     compileOnly 'org.checkerframework:checker-qual:' + checkerframeworkVersion
     compileOnly 'org.jetbrains.kotlin:kotlin-annotations-jvm:' + kotlinAnnotationsVersion
+    androidTestImplementation 'androidx.test:rules:' + androidxTestRulesVersion
+    androidTestImplementation 'androidx.test:runner:' + androidxTestRunnerVersion
+    androidTestImplementation 'androidx.multidex:multidex:' + androidxMultidexVersion
+    // Emulator tests assume that an app-packaged version of cronet is
+    // available.
+    androidTestImplementation 'org.chromium.net:cronet-embedded:76.3809.111'
+    androidTestImplementation(project(modulePrefix + 'testutils'))
     testImplementation project(modulePrefix + 'library')
     testImplementation project(modulePrefix + 'testutils')
     testImplementation 'com.squareup.okhttp3:mockwebserver:' + mockWebServerVersion

extensions/cronet/src/androidTest/AndroidManifest.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.google.android.exoplayer2.ext.cronet">
+
+  <uses-permission android:name="android.permission.INTERNET"/>
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+  <uses-sdk/>
+
+  <application
+    android:allowBackup="false"
+    android:usesCleartextTraffic="true"
+    tools:ignore="MissingApplicationIcon,HardcodedDebugMode"/>
+
+  <instrumentation
+      android:targetPackage="com.google.android.exoplayer2.ext.cronet"
+      android:name="androidx.test.runner.AndroidJUnitRunner"/>
+
+</manifest>

extensions/cronet/src/androidTest/java/com/google/android/exoplayer2/ext/cronet/CronetDataSourceContractTest.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2020 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.google.android.exoplayer2.ext.cronet;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.net.Uri;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.android.exoplayer2.testutil.DataSourceContractTest;
+import com.google.android.exoplayer2.testutil.HttpDataSourceTestEnv;
+import com.google.android.exoplayer2.upstream.DataSource;
+import com.google.android.exoplayer2.upstream.HttpDataSource;
+import com.google.common.collect.ImmutableList;
+import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import org.junit.After;
+import org.junit.Ignore;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** {@link DataSource} contract tests for {@link CronetDataSource}. */
+@RunWith(AndroidJUnit4.class)
+public class CronetDataSourceContractTest extends DataSourceContractTest {
+
+  @Rule public HttpDataSourceTestEnv httpDataSourceTestEnv = new HttpDataSourceTestEnv();
+  private final ExecutorService executorService = Executors.newSingleThreadExecutor();
+
+  @After
+  public void tearDown() {
+    executorService.shutdown();
+  }
+
+  @Override
+  protected DataSource createDataSource() {
+    CronetEngineWrapper cronetEngineWrapper =
+        new CronetEngineWrapper(
+            ApplicationProvider.getApplicationContext(),
+            /* userAgent= */ "test-agent",
+            /* preferGMSCoreCronet= */ false);
+    assertThat(cronetEngineWrapper.getCronetEngineSource())
+        .isEqualTo(CronetEngineWrapper.SOURCE_NATIVE);
+    return new CronetDataSource.Factory(cronetEngineWrapper, executorService)
+        .setFallbackFactory(new InvalidDataSourceFactory())
+        .createDataSource();
+  }
+
+  @Override
+  protected ImmutableList<TestResource> getTestResources() {
+    return httpDataSourceTestEnv.getServedResources();
+  }
+
+  @Override
+  protected Uri getNotFoundUri() {
+    return Uri.parse(httpDataSourceTestEnv.getNonexistentUrl());
+  }
+
+  @Override
+  @Test
+  @Ignore
+  public void dataSpecWithLength_readExpectedRange() {}
+
+  @Override
+  @Test
+  @Ignore
+  public void dataSpecWithPositionAndLength_readExpectedRange() {}
+
+  /**
+   * An {@link HttpDataSource.Factory} that throws {@link UnsupportedOperationException} on every
+   * interaction.
+   */
+  private static class InvalidDataSourceFactory implements HttpDataSource.Factory {
+    @Override
+    public HttpDataSource createDataSource() {
+      throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public HttpDataSource.RequestProperties getDefaultRequestProperties() {
+      throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public HttpDataSource.Factory setDefaultRequestProperties(
+        Map<String, String> defaultRequestProperties) {
+      throw new UnsupportedOperationException();
+    }
+  }
+}

testutils/src/main/java/com/google/android/exoplayer2/testutil/HttpDataSourceTestEnv.java

@@ -85,7 +85,6 @@ public class HttpDataSourceTestEnv extends ExternalResource {
         createTestResource("range supported", RANGE_SUPPORTED),
         createTestResource("range supported, length unknown", RANGE_SUPPORTED_LENGTH_UNKNOWN),
         createTestResource("range not supported", RANGE_NOT_SUPPORTED),
-        createTestResource("range not supported", RANGE_NOT_SUPPORTED),
         createTestResource(
             "range not supported, length unknown", RANGE_NOT_SUPPORTED_LENGTH_UNKNOWN),
         createTestResource("gzip enabled", GZIP_ENABLED),