1 files changed, 100 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/events/ReporterTest.java b/src/test/java/com/google/devtools/build/lib/events/ReporterTest.java
new file mode 100644
index 0000000000..f51451ab3e
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+++ b/src/test/java/com/google/devtools/build/lib/events/ReporterTest.java
@@ -0,0 +1,100 @@
+// Copyright 2014 Google Inc. 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 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;
+
+  @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.iterator()), 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.iterator());
+    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() {
+    assertEquals("", out.toString());
+    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."));
+    assertEquals("", out.toString());
+  }
+
+}