blob: 3d0beb07344969a20a1412d8d67e6f740526c9ec [file] [log] [blame]
/*
* 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;
}
}
}