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package com.bumptech.glide.load.resource;
import com.bumptech.glide.load.ResourceDecoder;
import com.bumptech.glide.load.engine.Resource;
import org.junit.Before;
import org.junit.Test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public class FileToStreamDecoderTest {
private ResourceDecoder<InputStream, Object> streamDecoder;
private FileToStreamDecoder<Object> decoder;
private FileToStreamDecoder.FileOpener fileOpener;
@SuppressWarnings("unchecked")
@Before
public void setUp() {
fileOpener = mock(FileToStreamDecoder.FileOpener.class);
streamDecoder = mock(ResourceDecoder.class);
decoder = new FileToStreamDecoder<Object>(streamDecoder, fileOpener);
}
@Test
public void testHasEmptyId() {
assertEquals("", decoder.getId());
}
@Test
public void testReturnsResourceFromStreamDecoder() throws IOException {
File file = new File("test");
InputStream expected = new ByteArrayInputStream(new byte[0]);
when(fileOpener.open(eq(file))).thenReturn(expected);
Resource<Object> resource = mock(Resource.class);
int width = 123;
int height = 456;
when(streamDecoder.decode(eq(expected), eq(width), eq(height))).thenReturn(resource);
assertEquals(resource, decoder.decode(file, width, height));
}
@Test
public void testClosesStream() throws IOException {
InputStream is = mock(InputStream.class);
when(fileOpener.open(any(File.class))).thenReturn(is);
decoder.decode(new File("test"), 100, 100);
verify(is).close();
}
@Test
public void testClosesStreamIfStreamDecoderThrows() throws IOException {
InputStream is = mock(InputStream.class);
when(fileOpener.open(any(File.class))).thenReturn(is);
when(streamDecoder.decode(eq(is), anyInt(), anyInt())).thenAnswer(new Answer<Object>() {
@Override
public Object answer(InvocationOnMock invocationOnMock) throws Throwable {
throw new IOException("test");
}
});
try {
decoder.decode(new File("test"), 100, 100);
} catch (IOException e) {
// Expected.
}
verify(is).close();
}
}
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