1 files changed, 129 insertions, 0 deletions
diff --git a/src/test/java/com/google/android/downloader/CronetUrlEngineTest.java b/src/test/java/com/google/android/downloader/CronetUrlEngineTest.java
new file mode 100644
index 0000000..1a2a257
--- /dev/null
+++ b/src/test/java/com/google/android/downloader/CronetUrlEngineTest.java
@@ -0,0 +1,129 @@
+// Copyright 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.
+
+package com.google.android.downloader;
+
+import static androidx.test.InstrumentationRegistry.getInstrumentation;
+import static com.google.common.truth.Truth.assertThat;
+import static org.junit.Assert.assertThrows;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.common.base.Charsets;
+import com.google.common.io.Files;
+import com.google.common.util.concurrent.ListenableFuture;
+import java.io.File;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import org.chromium.net.CronetEngine;
+import org.chromium.net.NetworkException;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.junit.runner.RunWith;
+
+/** Unit tests for CronetUrlEngine. */
+@RunWith(AndroidJUnit4.class)
+public class CronetUrlEngineTest {
+  @Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
+
+  private MockWebServerUrlEngineTestHelper testHelper;
+  private CronetUrlEngine engine;
+
+  @Before
+  public void setUp() {
+    ExecutorService executorService = Executors.newSingleThreadExecutor();
+    TestingExecutorService testingExecutorService = new TestingExecutorService(executorService);
+    testHelper = new MockWebServerUrlEngineTestHelper(temporaryFolder, testingExecutorService);
+    CronetEngine cronetEngine =
+        new CronetEngine.Builder(getInstrumentation().getTargetContext()).build();
+    engine = new CronetUrlEngine(cronetEngine, executorService);
+  }
+
+  @After
+  public void tearDown() throws Exception {
+    testHelper.tearDown();
+  }
+
+  @Test
+  public void executeRequest_normalResponse_succeeds() throws Exception {
+    testHelper.executeRequest_normalResponse_succeeds(engine);
+  }
+
+  @Test
+  public void executeRequest_responseThrottled_succeeds() throws Exception {
+    testHelper.executeRequest_responseThrottled_succeeds(engine);
+  }
+
+  @Test
+  public void executeRequest_largeResponse_succeeds() throws Exception {
+    testHelper.executeRequest_largeResponse_succeeds(engine, CronetUrlEngine.BUFFER_SIZE_BYTES * 3);
+  }
+
+  @Test
+  public void executeRequest_closeBeforeWrite_failsAborted() throws Exception {
+    testHelper.executeRequest_closeBeforeWrite_failsAborted(engine);
+  }
+
+  @Test
+  public void executeRequest_serverError_failsInternalError() throws Exception {
+    testHelper.executeRequest_serverError_failsInternalError(engine);
+  }
+
+  @Test
+  public void executeRequest_networkError_failsInternalError() throws Exception {
+    testHelper.executeRequest_networkError_failsInternalError(engine);
+  }
+
+  @Test
+  public void executeRequest_writeError_failsInternalError() throws Exception {
+    testHelper.executeRequest_writeError_failsInternalError(engine);
+  }
+
+  @Test
+  public void executeRequest_requestCanceled_requestNeverSent() throws Exception {
+    testHelper.executeRequest_requestCanceled_requestNeverSent(engine);
+  }
+
+  @Test
+  public void executeRequest_invalidUrl_failsInvalidArgument() throws Exception {
+    testHelper.executeRequest_invalidUrl_failsInvalidArgument(engine);
+  }
+
+  @Test
+  public void executeRequest_fileUrl_requestFails() throws Exception {
+    // Note: File url testing doesn't exist in MockWebServerUrlEngineTestHelper because
+    // it doesn't involve the MockWebServer and doesn't apply to all UrlEngine implementations.
+    String message = "foobar";
+    File sourceFile = temporaryFolder.newFile();
+    Files.asCharSink(sourceFile, Charsets.UTF_8).write(message);
+
+    String url = sourceFile.toURI().toURL().toString();
+    UrlRequest request = engine.createRequest(url).build();
+    ListenableFuture<? extends UrlResponse> responseFuture = request.send();
+
+    // Cronet doesn't support file URLs. Verify that the request fails with an underlying
+    // error that communicates this problem.
+    ExecutionException exception = assertThrows(ExecutionException.class, responseFuture::get);
+    assertThat(exception).hasCauseThat().isInstanceOf(RequestException.class);
+    assertThat(exception).hasCauseThat().hasCauseThat().isInstanceOf(NetworkException.class);
+    assertThat(exception)
+        .hasCauseThat()
+        .hasCauseThat()
+        .hasMessageThat()
+        .contains("UNKNOWN_URL_SCHEME");
+  }
+}