// 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);
  }
}