| /* |
| * Copyright (C) 2011 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; |
| |
| import android.test.suitebuilder.annotation.SmallTest; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.Objects; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| public class SystemPropertiesTest extends TestCase { |
| private static final String KEY = "sys.testkey"; |
| private static final String PERSIST_KEY = "persist.sys.testkey"; |
| |
| @SmallTest |
| public void testStressPersistPropertyConsistency() throws Exception { |
| for (int i = 0; i < 100; ++i) { |
| SystemProperties.set(PERSIST_KEY, Long.toString(i)); |
| long ret = SystemProperties.getLong(PERSIST_KEY, -1); |
| assertEquals(i, ret); |
| } |
| } |
| |
| @SmallTest |
| public void testStressMemoryPropertyConsistency() throws Exception { |
| for (int i = 0; i < 100; ++i) { |
| SystemProperties.set(KEY, Long.toString(i)); |
| long ret = SystemProperties.getLong(KEY, -1); |
| assertEquals(i, ret); |
| } |
| } |
| |
| @SmallTest |
| public void testProperties() throws Exception { |
| String value; |
| |
| SystemProperties.set(KEY, ""); |
| value = SystemProperties.get(KEY, "default"); |
| assertEquals("default", value); |
| |
| // null default value is the same as "". |
| SystemProperties.set(KEY, null); |
| value = SystemProperties.get(KEY, "default"); |
| assertEquals("default", value); |
| |
| SystemProperties.set(KEY, "SA"); |
| value = SystemProperties.get(KEY, "default"); |
| assertEquals("SA", value); |
| |
| value = SystemProperties.get(KEY); |
| assertEquals("SA", value); |
| |
| SystemProperties.set(KEY, ""); |
| value = SystemProperties.get(KEY, "default"); |
| assertEquals("default", value); |
| |
| // null value is the same as "". |
| SystemProperties.set(KEY, "SA"); |
| SystemProperties.set(KEY, null); |
| value = SystemProperties.get(KEY, "default"); |
| assertEquals("default", value); |
| |
| value = SystemProperties.get(KEY); |
| assertEquals("", value); |
| } |
| |
| private static void testInt(String setVal, int defValue, int expected) { |
| SystemProperties.set(KEY, setVal); |
| int value = SystemProperties.getInt(KEY, defValue); |
| assertEquals(expected, value); |
| } |
| |
| private static void testLong(String setVal, long defValue, long expected) { |
| SystemProperties.set(KEY, setVal); |
| long value = SystemProperties.getLong(KEY, defValue); |
| assertEquals(expected, value); |
| } |
| |
| @SmallTest |
| public void testIntegralProperties() throws Exception { |
| testInt("", 123, 123); |
| testInt("", 0, 0); |
| testInt("", -123, -123); |
| |
| testInt("123", 124, 123); |
| testInt("0", 124, 0); |
| testInt("-123", 124, -123); |
| |
| testLong("", 3147483647L, 3147483647L); |
| testLong("", 0, 0); |
| testLong("", -3147483647L, -3147483647L); |
| |
| testLong("3147483647", 124, 3147483647L); |
| testLong("0", 124, 0); |
| testLong("-3147483647", 124, -3147483647L); |
| } |
| |
| @SmallTest |
| @SuppressWarnings("null") |
| public void testNullKey() throws Exception { |
| try { |
| SystemProperties.get(null); |
| fail("Expected NullPointerException"); |
| } catch (NullPointerException npe) { |
| } |
| |
| try { |
| SystemProperties.get(null, "default"); |
| fail("Expected NullPointerException"); |
| } catch (NullPointerException npe) { |
| } |
| |
| try { |
| SystemProperties.set(null, "value"); |
| fail("Expected NullPointerException"); |
| } catch (NullPointerException npe) { |
| } |
| |
| try { |
| SystemProperties.getInt(null, 0); |
| fail("Expected NullPointerException"); |
| } catch (NullPointerException npe) { |
| } |
| |
| try { |
| SystemProperties.getLong(null, 0); |
| fail("Expected NullPointerException"); |
| } catch (NullPointerException npe) { |
| } |
| } |
| |
| @SmallTest |
| public void testCallbacks() { |
| // Latches are not really necessary, but are easy to use. |
| final CountDownLatch wait1 = new CountDownLatch(1); |
| final CountDownLatch wait2 = new CountDownLatch(1); |
| |
| Runnable r1 = new Runnable() { |
| boolean done = false; |
| @Override |
| public void run() { |
| if (done) { |
| return; |
| } |
| done = true; |
| |
| wait1.countDown(); |
| throw new RuntimeException("test"); |
| } |
| }; |
| |
| Runnable r2 = new Runnable() { |
| @Override |
| public void run() { |
| wait2.countDown(); |
| } |
| }; |
| |
| SystemProperties.addChangeCallback(r1); |
| SystemProperties.addChangeCallback(r2); |
| |
| SystemProperties.reportSyspropChanged(); |
| |
| try { |
| assertTrue(wait1.await(5, TimeUnit.SECONDS)); |
| } catch (InterruptedException e) { |
| fail("InterruptedException"); |
| } |
| try { |
| assertTrue(wait2.await(5, TimeUnit.SECONDS)); |
| } catch (InterruptedException e) { |
| fail("InterruptedException"); |
| } |
| } |
| |
| @SmallTest |
| public void testDigestOf() { |
| final String empty = SystemProperties.digestOf(); |
| final String finger = SystemProperties.digestOf("ro.build.fingerprint"); |
| final String fingerBrand = SystemProperties.digestOf( |
| "ro.build.fingerprint", "ro.product.brand"); |
| final String brandFinger = SystemProperties.digestOf( |
| "ro.product.brand", "ro.build.fingerprint"); |
| |
| // Shouldn't change over time |
| assertTrue(Objects.equals(finger, SystemProperties.digestOf("ro.build.fingerprint"))); |
| |
| // Different properties means different results |
| assertFalse(Objects.equals(empty, finger)); |
| assertFalse(Objects.equals(empty, fingerBrand)); |
| assertFalse(Objects.equals(finger, fingerBrand)); |
| |
| // Same properties means same result |
| assertTrue(Objects.equals(fingerBrand, brandFinger)); |
| } |
| } |