| /* |
| * Copyright (C) 2008 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 android.os.cts; |
| |
| import junit.framework.TestCase; |
| import android.cts.util.TestThread; |
| import android.os.ConditionVariable; |
| |
| public class ConditionVariableTest extends TestCase { |
| private static final int WAIT_TIME = 3000; |
| private static final int BLOCK_TIME = 1000; |
| private static final int BLOCK_TIME_DELTA = 200; |
| private static final int SLEEP_TIME = 1000; |
| private static final int TOLERANCE_MS = BLOCK_TIME; |
| private ConditionVariable mConditionVariable; |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| mConditionVariable = new ConditionVariable(); |
| } |
| |
| public void testConstructor() { |
| assertFalse(mConditionVariable.block(BLOCK_TIME)); |
| assertFalse(new ConditionVariable(false).block(BLOCK_TIME)); |
| assertTrue(new ConditionVariable(true).block(BLOCK_TIME)); |
| } |
| |
| public void testConditionVariable() throws Throwable { |
| // test open then block(long) |
| mConditionVariable.open(); |
| long time = System.currentTimeMillis(); |
| assertTrue(mConditionVariable.block(BLOCK_TIME)); |
| assertTrue(System.currentTimeMillis() - time < TOLERANCE_MS); |
| |
| // test close then block(long) |
| mConditionVariable.close(); |
| time = System.currentTimeMillis(); |
| assertFalse(mConditionVariable.block(BLOCK_TIME)); |
| assertTrue(System.currentTimeMillis() - time >= BLOCK_TIME); |
| |
| // test block then open |
| time = System.currentTimeMillis(); |
| TestThread t = new TestThread(new Runnable() { |
| |
| public void run() { |
| try { |
| Thread.sleep(SLEEP_TIME); |
| } catch (InterruptedException e) { |
| fail(e.getMessage()); |
| } |
| mConditionVariable.open(); |
| } |
| }); |
| |
| t.start(); |
| mConditionVariable.block(); |
| long timeDelta = System.currentTimeMillis() - time; |
| assertTrue(timeDelta >= BLOCK_TIME && timeDelta <= BLOCK_TIME + BLOCK_TIME_DELTA); |
| t.joinAndCheck(WAIT_TIME); |
| |
| time = System.currentTimeMillis(); |
| t = new TestThread(new Runnable() { |
| |
| public void run() { |
| try { |
| Thread.sleep(BLOCK_TIME >> 1); |
| } catch (InterruptedException e) { |
| fail(e.getMessage()); |
| } |
| mConditionVariable.open(); |
| } |
| }); |
| t.start(); |
| |
| assertTrue(mConditionVariable.block(BLOCK_TIME)); |
| t.joinAndCheck(WAIT_TIME); |
| } |
| } |