| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 tests.api.java.lang.ref; |
| |
| import dalvik.annotation.TestTargets; |
| import dalvik.annotation.TestLevel; |
| import dalvik.annotation.TestTargetNew; |
| import dalvik.annotation.TestTargetClass; |
| import dalvik.annotation.BrokenTest; |
| import dalvik.annotation.SideEffect; |
| |
| import java.lang.ref.Reference; |
| import java.lang.ref.ReferenceQueue; |
| import java.lang.ref.SoftReference; |
| import java.util.Vector; |
| |
| @TestTargetClass(SoftReference.class) |
| public class SoftReferenceTest extends junit.framework.TestCase { |
| static Boolean bool; |
| SoftReference r; |
| |
| protected void doneSuite() { |
| bool = null; |
| } |
| |
| /** |
| * @tests java.lang.ref.SoftReference#SoftReference(java.lang.Object, |
| * java.lang.ref.ReferenceQueue) |
| */ |
| @TestTargetNew( |
| level = TestLevel.COMPLETE, |
| notes = "", |
| method = "SoftReference", |
| args = {java.lang.Object.class, java.lang.ref.ReferenceQueue.class} |
| ) |
| public void test_ConstructorLjava_lang_ObjectLjava_lang_ref_ReferenceQueue() { |
| ReferenceQueue rq = new ReferenceQueue(); |
| bool = new Boolean(true); |
| try { |
| SoftReference sr = new SoftReference(bool, rq); |
| assertTrue("Initialization failed.", ((Boolean) sr.get()) |
| .booleanValue()); |
| } catch (Exception e) { |
| fail("Exception during test : " + e.getMessage()); |
| } |
| |
| boolean exception = false; |
| try { |
| new SoftReference(bool, null); |
| } catch (NullPointerException e) { |
| exception = true; |
| } |
| assertTrue("Should not throw NullPointerException", !exception); |
| } |
| |
| /** |
| * @tests java.lang.ref.SoftReference#SoftReference(java.lang.Object) |
| */ |
| @TestTargetNew( |
| level = TestLevel.COMPLETE, |
| notes = "", |
| method = "SoftReference", |
| args = {java.lang.Object.class} |
| ) |
| public void test_ConstructorLjava_lang_Object() { |
| bool = new Boolean(true); |
| try { |
| SoftReference sr = new SoftReference(bool); |
| assertTrue("Initialization failed.", ((Boolean) sr.get()) |
| .booleanValue()); |
| } catch (Exception e) { |
| fail("Exception during test : " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * @tests java.lang.ref.SoftReference#get() |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL, |
| notes = "Doesn't verified that get() can return null.", |
| method = "get", |
| args = {} |
| ) |
| public void test_get() { |
| bool = new Boolean(false); |
| SoftReference sr = new SoftReference(bool); |
| assertTrue("Same object not returned.", bool == sr.get()); |
| } |
| |
| @TestTargetNew( |
| level = TestLevel.COMPLETE, |
| notes = "", |
| method = "get", |
| args = {} |
| ) |
| @SideEffect("Causes OutOfMemoryError to test finalization") |
| public void test_get_SoftReference() { |
| |
| class TestObject { |
| public boolean finalized; |
| public TestObject() { |
| finalized = false; |
| } |
| |
| protected void finalize() { |
| finalized = true; |
| } |
| } |
| |
| final ReferenceQueue rq = new ReferenceQueue(); |
| |
| class TestThread extends Thread { |
| public void run() { |
| Object testObj = new TestObject(); |
| r = new SoftReference(testObj, rq); |
| } |
| } |
| Reference ref; |
| try { |
| TestThread t = new TestThread(); |
| t.start(); |
| t.join(); |
| Vector<StringBuffer> v = new Vector<StringBuffer>(); |
| try { |
| while(true) { |
| v.add(new StringBuffer(10000)); |
| } |
| } catch(OutOfMemoryError ofme) { |
| v = null; |
| } |
| } catch (InterruptedException e) { |
| fail("InterruptedException : " + e.getMessage()); |
| } |
| |
| assertNull("get() should return null " + |
| "if OutOfMemoryError is thrown.", r.get()); |
| |
| try { |
| TestThread t = new TestThread(); |
| t.start(); |
| t.join(); |
| System.gc(); |
| System.runFinalization(); |
| ref = rq.poll(); |
| assertNotNull("Object not garbage collected.", ref); |
| assertNull("Object is not null.", ref.get()); |
| assertNotNull("Object could not be reclaimed.", r.get()); |
| } catch (Exception e) { |
| fail("Exception : " + e.getMessage()); |
| } |
| } |
| |
| protected void setUp() { |
| } |
| |
| protected void tearDown() { |
| } |
| } |