1 files changed, 44 insertions, 0 deletions
diff --git a/src/java_tools/junitrunner/javatests/com/google/testing/junit/runner/junit4/TestModuleMockRunListenerFactory.java b/src/java_tools/junitrunner/javatests/com/google/testing/junit/runner/junit4/TestModuleMockRunListenerFactory.java
new file mode 100644
index 0000000000..97b40e9f09
--- /dev/null
+++ b/src/java_tools/junitrunner/javatests/com/google/testing/junit/runner/junit4/TestModuleMockRunListenerFactory.java
@@ -0,0 +1,44 @@
+// Copyright 2016 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.testing.junit.runner.junit4;
+
+import com.google.testing.junit.runner.util.Factory;
+import java.util.Set;
+import org.junit.runner.notification.RunListener;
+
+/**
+ * A factory that supplies a {@link Set}<{@link RunListener}> for testing purposes.
+ */
+public final class TestModuleMockRunListenerFactory implements Factory<Set<RunListener>> {
+  private final JUnit4RunnerTest.TestModule module;
+
+  public TestModuleMockRunListenerFactory(JUnit4RunnerTest.TestModule module) {
+    assert module != null;
+    this.module = module;
+  }
+
+  @Override
+  public Set<RunListener> get() {
+    Set<RunListener> runListeners = module.mockRunListener();
+    if (runListeners == null) {
+      throw new NullPointerException();
+    }
+    return runListeners;
+  }
+
+  public static Factory<Set<RunListener>> create(JUnit4RunnerTest.TestModule module) {
+    return new TestModuleMockRunListenerFactory(module);
+  }
+}
+\ No newline at end of file