1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/testutil/ManualSleeper.java b/src/test/java/com/google/devtools/build/lib/testutil/ManualSleeper.java
new file mode 100644
index 0000000000..6e16253499
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/testutil/ManualSleeper.java
@@ -0,0 +1,36 @@
+// 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.testutil;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.devtools.build.lib.util.Sleeper;
+
+/** Fake sleeper for testing. */
+public final class ManualSleeper implements Sleeper {
+
+  private final ManualClock clock;
+
+  public ManualSleeper(ManualClock clock) {
+    this.clock = checkNotNull(clock);
+  }
+
+  @Override
+  public void sleepMillis(long milliseconds) throws InterruptedException {
+    checkArgument(milliseconds >= 0, "sleeper can't time travel");
+    clock.advanceMillis(milliseconds);
+  }
+}