@Test
public void testGetMimeType() {
assertEquals("image/png", Utils.getImageMimeType("png"));
assertEquals("image/gif", Utils.getImageMimeType("gif"));
assertEquals("image/jpeg", Utils.getImageMimeType("jpeg"));
assertEquals("image/jpeg", Utils.getImageMimeType("jpg"));
assertEquals("image/png", Utils.getImageMimeType("PNG"));
assertEquals("image/gif", Utils.getImageMimeType("GIF"));
assertEquals("image/jpeg", Utils.getImageMimeType("JPEG"));
assertEquals("image/jpeg", Utils.getImageMimeType("JPG"));
assertEquals("application/octet-stream", Utils.getImageMimeType("unknown"));
}
@Test
public void testSubstractWebLengths() {
assertEquals("30px", Utils.substractWebLengths("40px", "10px"));
assertEquals("3em", Utils.substractWebLengths("5em", "2em"));
assertNull(Utils.substractWebLengths("25%", "2em"));
}
@Test
public void testDivideWebLengths() {
assertEquals("20px", Utils.divideWebLength("40px", 2));
assertEquals("1em", Utils.divideWebLength("5em", 3));
assertNull(Utils.divideWebLength("25%", 0));
}
@Test
public void testAddWebLengths() {
assertEquals("30px", Utils.addWebLengths("10px", "20px"));
assertEquals("3em", Utils.addWebLengths("1em", "2em"));
assertNull(Utils.addWebLengths("25%", "2em"));
}