| /* |
| * Copyright 2022 Google LLC |
| * |
| * 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.android.libraries.mobiledatadownload.testing; |
| |
| import com.google.android.libraries.mobiledatadownload.TimeSource; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| /** Fake implementation of {@link TimeSource} for testing. */ |
| public final class FakeTimeSource implements TimeSource { |
| |
| private final AtomicLong currentMillis = new AtomicLong(); |
| |
| @Override |
| public long currentTimeMillis() { |
| return currentMillis.get(); |
| } |
| |
| /** Advances the current time and returns {@code this}. */ |
| public FakeTimeSource advance(long interval, TimeUnit units) { |
| long millis = units.toMillis(interval); |
| if (millis < 0) { |
| throw new IllegalArgumentException("Can't advance negative duration: " + millis); |
| } |
| currentMillis.getAndAdd(millis); |
| return this; |
| } |
| |
| /** Sets the current time and returns {@code this}. */ |
| public FakeTimeSource set(long millis) { |
| if (millis < 0) { |
| throw new IllegalArgumentException("Can't set before unix epoch:" + millis); |
| } |
| currentMillis.set(millis); |
| return this; |
| } |
| } |