How to use

UptoTokenMatcher

in

org.sonar.duplications.statement.matcher

public static TokenMatcher to(String... tokens) {
 return new UptoTokenMatcher(tokens);
}

@Test
public void shouldNotMatch() {
 Token t1 = new Token("a", 1, 1);
 Token t2 = new Token("b", 2, 1);
 TokenQueue tokenQueue = spy(new TokenQueue(Arrays.asList(t1, t2)));
 List<Token> output = mock(List.class);
 UptoTokenMatcher matcher = new UptoTokenMatcher(new String[] { ";" });
 assertThat(matcher.matchToken(tokenQueue, output), is(false));
 verify(tokenQueue, times(2)).poll();
 verify(tokenQueue, times(2)).peek();
 verifyNoMoreInteractions(tokenQueue);
 verify(output).add(t1);
 verify(output).add(t2);
 verifyNoMoreInteractions(output);
}

@Test
public void shouldMatch() {
 Token t1 = new Token("a", 1, 1);
 Token t2 = new Token(";", 2, 1); // should stop on this token
 Token t3 = new Token(";", 3, 1);
 TokenQueue tokenQueue = spy(new TokenQueue(Arrays.asList(t1, t2, t3)));
 List<Token> output = mock(List.class);
 UptoTokenMatcher matcher = new UptoTokenMatcher(new String[] { ";" });
 assertThat(matcher.matchToken(tokenQueue, output), is(true));
 verify(tokenQueue, times(2)).poll();
 verify(tokenQueue).peek();
 verifyNoMoreInteractions(tokenQueue);
 verify(output).add(t1);
 verify(output).add(t2);
 verifyNoMoreInteractions(output);
}

@Test
public void shouldMatchAnyOfProvidedTokens() {
 Token t1 = new Token("a", 1, 1);
 Token t2 = new Token("{", 2, 1);
 Token t3 = new Token("b", 3, 1);
 Token t4 = new Token("}", 4, 1);
 TokenQueue tokenQueue = spy(new TokenQueue(Arrays.asList(t1, t2, t3, t4)));
 List<Token> output = mock(List.class);
 UptoTokenMatcher matcher = new UptoTokenMatcher(new String[] { "{", "}" });
 assertThat(matcher.matchToken(tokenQueue, output), is(true));
 assertThat(matcher.matchToken(tokenQueue, output), is(true));
 verify(tokenQueue, times(4)).poll();
 verify(tokenQueue, times(2)).peek();
 verifyNoMoreInteractions(tokenQueue);
 verify(output).add(t1);
 verify(output).add(t2);
 verify(output).add(t3);
 verify(output).add(t4);
 verifyNoMoreInteractions(output);
}

@Test(expected = IllegalArgumentException.class)
public void shouldNotAcceptNull() {
 new UptoTokenMatcher(null);
}

@Test(expected = IllegalArgumentException.class)
public void shouldNotAcceptEmpty() {
 new UptoTokenMatcher(new String[] {});
}

public static TokenMatcher to(String... tokens) {
 return new UptoTokenMatcher(tokens);
}