| /* |
| * Copyright (C) 2015 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.android.tv.testing; |
| |
| import com.android.tv.util.Clock; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Fake implementation of Clock suitable for testing. |
| * |
| * <p>The current time only changes if {@link #setCurrentTimeMillis(long)}, {@link #increment} or |
| * {@link #sleep(long)} is called. |
| */ |
| public class FakeClock implements Clock { |
| /** |
| * Creates a fake clock with the time set to now and the boot time set to now - 100,000. |
| */ |
| public static FakeClock createWithCurrentTime() { |
| long now = System.currentTimeMillis(); |
| return new FakeClock(now, now - 100_000); |
| } |
| |
| /** |
| * Creates a fake clock with the time set to zero. |
| */ |
| public static FakeClock createWithTimeOne() { |
| return new FakeClock(1L, 0L); |
| } |
| |
| |
| private long mCurrentTimeMillis; |
| |
| private long mBootTimeMillis; |
| |
| private FakeClock(long currentTimeMillis, long bootTimeMillis) { |
| mCurrentTimeMillis = currentTimeMillis; |
| mBootTimeMillis = bootTimeMillis; |
| } |
| |
| public void setCurrentTimeMillis(long ms) { |
| if (ms < mBootTimeMillis) { |
| throw new IllegalStateException("current time can not be before boot time"); |
| } |
| mCurrentTimeMillis = ms; |
| } |
| |
| public void setBootTimeMillis(long ms) { |
| if (ms > mCurrentTimeMillis) { |
| throw new IllegalStateException("boot time can not be after current time"); |
| } |
| mBootTimeMillis = ms; |
| } |
| |
| /** |
| * Increment the current time by one unit of time. |
| * |
| * @param unit The time unit to increment by. |
| */ |
| public void increment(TimeUnit unit) { |
| increment(unit, 1); |
| } |
| |
| /** |
| * Increment the current time by {@code amount} unit of time. |
| * |
| * @param unit The time unit to increment by. |
| * @param amount The amount of time units to increment by. |
| */ |
| public void increment(TimeUnit unit, long amount) { |
| mCurrentTimeMillis += unit.toMillis(amount); |
| } |
| |
| @Override |
| public long currentTimeMillis() { |
| return mCurrentTimeMillis; |
| } |
| |
| @Override |
| public long elapsedRealtime() { |
| return mCurrentTimeMillis - mBootTimeMillis; |
| } |
| |
| /** |
| * Sleep does not block it just updates the current time. |
| */ |
| @Override |
| public void sleep(long ms) { |
| // TODO: implement blocking if needed. |
| mCurrentTimeMillis += ms; |
| } |
| } |