@Test
public void shouldReturnExpectedFileNameWhenGenerating() {

	// Given
	FileNameGenerator wrapper = new PrefixFileNameGenerator(delegate, TEST_PREFIX);
	String imageUri = "https://testtest/WNEOWmasdgmao/msmld.zz?kaksk=eaewggg&asdg%20hk";
	// When
	String filename = delegate.generate(imageUri);
	String wrapperFilename = wrapper.generate(imageUri);
	// Then
	String expected = TEST_PREFIX + filename;
	assertThat(wrapperFilename, is(expected));
}