1 files changed, 84 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/skyframe/CyclesReporterTest.java b/src/test/java/com/google/devtools/build/skyframe/CyclesReporterTest.java
new file mode 100644
index 0000000000..35bda02f15
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/skyframe/CyclesReporterTest.java
@@ -0,0 +1,84 @@
+// 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.skyframe;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.events.EventHandler;
+import com.google.devtools.build.lib.events.NullEventHandler;
+import com.google.devtools.build.skyframe.CyclesReporter.SingleCycleReporter;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+@RunWith(JUnit4.class)
+public class CyclesReporterTest {
+
+  private static final SkyKey DUMMY_KEY = new SkyKey(SkyFunctionName.computed("func"), "key");
+
+  @Test
+  public void nullEventHandler() {
+    CyclesReporter cyclesReporter = new CyclesReporter();
+    try {
+      cyclesReporter.reportCycles(ImmutableList.<CycleInfo>of(), DUMMY_KEY, null);
+      assertThat(false).isTrue();
+    } catch (NullPointerException e) {
+      // Expected.
+    }
+  }
+
+  @Test
+  public void notReportedAssertion() {
+    SingleCycleReporter singleReporter = new SingleCycleReporter() {
+      @Override
+      public boolean maybeReportCycle(SkyKey topLevelKey, CycleInfo cycleInfo,
+          boolean alreadyReported, EventHandler eventHandler) {
+        return false;
+      }
+    };
+
+    CycleInfo cycleInfo = new CycleInfo(ImmutableList.of(DUMMY_KEY));
+    CyclesReporter cyclesReporter = new CyclesReporter(singleReporter);
+    try {
+      cyclesReporter.reportCycles(ImmutableList.of(cycleInfo), DUMMY_KEY,
+          NullEventHandler.INSTANCE);
+      assertThat(false).isTrue();
+    } catch (IllegalStateException e) {
+      // Expected.
+    }
+  }
+
+  @Test
+  public void smoke() {
+    final AtomicBoolean reported = new AtomicBoolean();
+    SingleCycleReporter singleReporter = new SingleCycleReporter() {
+      @Override
+      public boolean maybeReportCycle(SkyKey topLevelKey, CycleInfo cycleInfo,
+          boolean alreadyReported, EventHandler eventHandler) {
+        reported.set(true);
+        return true;
+      }
+    };
+
+    CycleInfo cycleInfo = new CycleInfo(ImmutableList.of(DUMMY_KEY));
+    CyclesReporter cyclesReporter = new CyclesReporter(singleReporter);
+    cyclesReporter.reportCycles(ImmutableList.of(cycleInfo), DUMMY_KEY,
+        NullEventHandler.INSTANCE);
+    assertThat(reported.get()).isTrue();
+  }
+}