@Test
public void getImageWriter_for_available_ImageWriter() throws Exception {
final Iterator<ImageWriter> imageWriterIterator =
Collections.singletonList(imageWriter).iterator();
when(ImageIO.getImageWritersByMIMEType(anyString())).thenReturn(imageWriterIterator);
final ImageWriter actualImageWriter = imageBuilder.getImageWriter();
assertSame(
"ImageWriter should have returned as provided by ImageIO.", imageWriter, actualImageWriter);
}
@Test(expected = ImageBuilderBuildException.class)
public void getImageWriter_for_unavailable_ImageWriter() throws Exception {
final List<ImageWriter> imageWriters = Collections.emptyList();
when(ImageIO.getImageWritersByMIMEType(anyString())).thenReturn(imageWriters.iterator());
imageBuilder.getImageWriter();
}
