@Test
public void shouldNotCreateStatement() {
TokenQueue tokenQueue = spy(new TokenQueue(Arrays.asList(new Token("a", 1, 1))));
TokenMatcher matcher = spy(new AnyTokenMatcher());
StatementChannel channel = StatementChannel.create(matcher);
List<Statement> output = mock(List.class);
assertThat(channel.consume(tokenQueue, output), is(true));
verify(matcher).matchToken(Matchers.eq(tokenQueue), Matchers.anyList());
verifyNoMoreInteractions(matcher);
verify(output).add(Matchers.any(Statement.class));
verifyNoMoreInteractions(output);
}
@Test
public void shouldPushForward() {
TokenQueue tokenQueue = mock(TokenQueue.class);
TokenMatcher matcher = mock(TokenMatcher.class);
List<Statement> output = mock(List.class);
StatementChannel channel = StatementChannel.create(matcher);
assertThat(channel.consume(tokenQueue, output), is(false));
ArgumentCaptor<List> matchedTokenList = ArgumentCaptor.forClass(List.class);
verify(matcher).matchToken(Matchers.eq(tokenQueue), matchedTokenList.capture());
verifyNoMoreInteractions(matcher);
verify(tokenQueue).pushForward(matchedTokenList.getValue());
verifyNoMoreInteractions(tokenQueue);
verifyNoMoreInteractions(output);
}
@Test
public void shouldCreateStatement() {
Token token = new Token("a", 1, 1);
TokenQueue tokenQueue = spy(new TokenQueue(Arrays.asList(token)));
TokenMatcher matcher = spy(new AnyTokenMatcher());
StatementChannel channel = StatementChannel.create(matcher);
List<Statement> output = mock(List.class);
assertThat(channel.consume(tokenQueue, output), is(true));
verify(matcher).matchToken(Matchers.eq(tokenQueue), Matchers.anyList());
verifyNoMoreInteractions(matcher);
ArgumentCaptor<Statement> statement = ArgumentCaptor.forClass(Statement.class);
verify(output).add(statement.capture());
assertThat(statement.getValue().getValue(), is("a"));
assertThat(statement.getValue().getStartLine(), is(1));
assertThat(statement.getValue().getEndLine(), is(1));
verifyNoMoreInteractions(output);
}
@Test(expected = IllegalStateException.class)
public void shouldThrowAnException() {
TokenMatcher tokenMatcher = mock(TokenMatcher.class);
StatementChannel channel = StatementChannel.create(tokenMatcher);
StatementChannelDisptacher dispatcher = new StatementChannelDisptacher(Arrays.asList(channel));
TokenQueue tokenQueue = mock(TokenQueue.class);
when(tokenQueue.peek()).thenReturn(new Token("a", 1, 0)).thenReturn(null);
List<Statement> statements = mock(List.class);
dispatcher.consume(tokenQueue, statements);
}
@Test
public void shouldConsume() {
TokenMatcher tokenMatcher = mock(TokenMatcher.class);
when(tokenMatcher.matchToken(any(TokenQueue.class), anyListOf(Token.class))).thenReturn(true);
StatementChannel channel = StatementChannel.create(tokenMatcher);
StatementChannelDisptacher dispatcher = new StatementChannelDisptacher(Arrays.asList(channel));
TokenQueue tokenQueue = mock(TokenQueue.class);
when(tokenQueue.peek()).thenReturn(new Token("a", 1, 0)).thenReturn(null);
List<Statement> statements = mock(List.class);
assertThat(dispatcher.consume(tokenQueue, statements), is(true));
verify(tokenQueue, times(2)).peek();
verifyNoMoreInteractions(tokenQueue);
verifyNoMoreInteractions(statements);
}
@Test(expected = IllegalArgumentException.class)
public void shouldNotAcceptEmpty() {
StatementChannel.create(new TokenMatcher[] {});
}
@Test(expected = IllegalArgumentException.class)
public void shouldNotAcceptNull() {
StatementChannel.create((TokenMatcher[]) null);
}
