@Test
public void should_find_mime_type() throws Exception {

    assertThat(HTTP.getContentTypeFromExtension("test.js")).isEqualTo(Optional.of("application/x-javascript"));
    assertThat(HTTP.getContentTypeFromExtension("html")).isEqualTo(Optional.of("text/html"));
    assertThat(HTTP.getContentTypeFromExtension("css")).isEqualTo(Optional.of("text/css"));
}