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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.events;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertEquals;
import com.google.common.collect.ImmutableList;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests the {@link Reporter} class.
*/
@RunWith(JUnit4.class)
public class ReporterTest extends EventTestTemplate {
private Reporter reporter;
private StringBuilder out;
private AbstractEventHandler outAppender;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
reporter = new Reporter();
out = new StringBuilder();
outAppender = new AbstractEventHandler(EventKind.ERRORS) {
@Override
public void handle(Event event) {
out.append(event.getMessage());
}
};
}
@Test
public void reporterShowOutput() {
reporter.setOutputFilter(OutputFilter.RegexOutputFilter.forRegex("naughty"));
EventCollector collector = new EventCollector(EventKind.ALL_EVENTS);
reporter.addHandler(collector);
Event interesting = new Event(EventKind.WARNING, null, "show-me", "naughty");
reporter.handle(interesting);
reporter.handle(new Event(EventKind.WARNING, null, "ignore-me", "good"));
assertEquals(ImmutableList.copyOf(collector), ImmutableList.of(interesting));
}
@Test
public void reporterCollectsEvents() {
ImmutableList<Event> want = ImmutableList.of(Event.warn("xyz"), Event.error("err"));
EventCollector collector = new EventCollector(EventKind.ALL_EVENTS);
reporter.addHandler(collector);
for (Event e : want) {
reporter.handle(e);
}
ImmutableList<Event> got = ImmutableList.copyOf(collector);
assertEquals(got, want);
}
@Test
public void reporterCopyConstructorCopiesHandlersList() {
reporter.addHandler(outAppender);
reporter.addHandler(outAppender);
Reporter copiedReporter = new Reporter(reporter);
copiedReporter.addHandler(outAppender); // Should have 3 handlers now.
reporter.addHandler(outAppender);
reporter.addHandler(outAppender); // Should have 4 handlers now.
copiedReporter.handle(Event.error(location, "."));
assertEquals("...", out.toString()); // The copied reporter has 3 handlers.
out = new StringBuilder();
reporter.handle(Event.error(location, "."));
assertEquals("....", out.toString()); // The old reporter has 4 handlers.
}
@Test
public void removeHandlerUndoesAddHandler() {
assertThat(out.toString()).isEmpty();
reporter.addHandler(outAppender);
reporter.handle(Event.error(location, "Event gets registered."));
assertEquals("Event gets registered.", out.toString());
out = new StringBuilder();
reporter.removeHandler(outAppender);
reporter.handle(Event.error(location, "Event gets ignored."));
assertThat(out.toString()).isEmpty();
}
}
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