| /* |
| * Copyright 2022 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.android.libraries.mobiledatadownload.file; |
| |
| import static com.google.android.libraries.mobiledatadownload.file.common.testing.StreamUtils.makeArrayOfBytesContent; |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Mockito.doThrow; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| import android.net.Uri; |
| import com.google.android.libraries.mobiledatadownload.file.common.testing.BufferingMonitor; |
| import com.google.android.libraries.mobiledatadownload.file.spi.Monitor; |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.robolectric.RobolectricTestRunner; |
| |
| /** Test {@link com.google.android.libraries.mobiledatadownload.file.MonitorInputStream}. */ |
| @RunWith(RobolectricTestRunner.class) |
| public class MonitorInputStreamTest { |
| |
| private static final byte[] TEST_CONTENT = makeArrayOfBytesContent(); |
| |
| @Test |
| public void monitorRead_shouldSeeAllBytes() throws Exception { |
| BufferingMonitor buffer = new BufferingMonitor(); |
| Uri uri = Uri.parse("foo:"); |
| InputStream in = new ByteArrayInputStream(TEST_CONTENT); |
| MonitorInputStream stream = MonitorInputStream.newInstance(Arrays.asList(buffer), uri, in); |
| |
| stream.read(); |
| stream.read(new byte[5]); |
| stream.read(); |
| stream.read(new byte[10], 5, 3); |
| |
| assertThat(buffer.bytesRead()).isEqualTo(Arrays.copyOf(TEST_CONTENT, 10)); |
| } |
| |
| @Test |
| public void monitorRead_withNullInputMonitor_shouldReturnNull() throws Exception { |
| Monitor mockMonitor = mock(Monitor.class); |
| when(mockMonitor.monitorRead(any())).thenReturn(null); |
| Uri uri = Uri.parse("foo:"); |
| InputStream in = new ByteArrayInputStream(TEST_CONTENT); |
| |
| assertThat(MonitorInputStream.newInstance(Arrays.asList(mockMonitor), uri, in)).isNull(); |
| } |
| |
| @Test |
| public void monitorRead_shouldCallClose() throws Exception { |
| Monitor mockMonitor = mock(Monitor.class); |
| Monitor.InputMonitor mockInputMonitor = mock(Monitor.InputMonitor.class); |
| when(mockMonitor.monitorRead(any())).thenReturn(mockInputMonitor); |
| Uri uri = Uri.parse("foo:"); |
| InputStream in = new ByteArrayInputStream(TEST_CONTENT); |
| try (MonitorInputStream stream = |
| MonitorInputStream.newInstance(Arrays.asList(mockMonitor), uri, in)) { |
| stream.read(new byte[TEST_CONTENT.length]); |
| } |
| verify(mockInputMonitor, times(1)).close(); |
| } |
| |
| @Test |
| public void monitorReadWithMonitorCloseException_shouldCallClose() throws Exception { |
| Monitor mockMonitor = mock(Monitor.class); |
| Monitor.InputMonitor mockInputMonitor = mock(Monitor.InputMonitor.class); |
| when(mockMonitor.monitorRead(any())).thenReturn(mockInputMonitor); |
| doThrow(new RuntimeException("Unchecked")).when(mockInputMonitor).close(); |
| Uri uri = Uri.parse("foo:"); |
| FakeInputStream fakeIn = new FakeInputStream(); |
| try (MonitorInputStream stream = |
| MonitorInputStream.newInstance(Arrays.asList(mockMonitor), uri, fakeIn)) { |
| stream.read(new byte[TEST_CONTENT.length]); |
| } |
| verify(mockInputMonitor, times(1)).close(); |
| assertThat(fakeIn.bytesRead).isEqualTo(TEST_CONTENT.length); |
| assertThat(fakeIn.closed).isTrue(); |
| } |
| |
| private static class FakeInputStream extends InputStream { |
| private boolean closed = true; |
| private int bytesRead = 0; |
| |
| @Override |
| public int read() throws IOException { |
| bytesRead += 1; |
| return 0; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| closed = true; |
| } |
| } |
| } |