expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);

        data = "<img src=\"http://example/foo.jpg\" width=\"100px\" height=\"100px\">";
        expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);
    }

    private void assertGetThumbnailUrl(String data, String expected) throws Exception {