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Framework for Gerrit's acceptance tests

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// Copyright (C) 2019 The Android Open Source Project
//
// 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.gerrit.acceptance;

import static java.util.concurrent.TimeUnit.MILLISECONDS;

import com.google.common.base.Stopwatch;
import java.time.Duration;
import java.util.function.Supplier;

public class WaitUtil {
  public static void waitUntil(Supplier waitCondition, Duration timeout)
      throws InterruptedException {
    Stopwatch stopwatch = Stopwatch.createStarted();
    while (!waitCondition.get()) {
      if (stopwatch.elapsed().compareTo(timeout) > 0) {
        throw new InterruptedException();
      }
      MILLISECONDS.sleep(50);
    }
  }
}