@Test
public void testRemoveUsername() {

	// Given
	String tweet = "@PrincessSuperC Hey Cici";
	TwitterTokenizer tokenizer = new TwitterTokenizer();
	// When
	List<String> actualTokens = tokenizer.tokenize(tweet);
	// Then
	List<String> expectedTokens = Arrays.asList("hei", "cici");
	assertEquals(expectedTokens, actualTokens);
}