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Diffstat (limited to 'luni/src/test/java/tests/api/java/lang/ref/PhantomReferenceTest.java')
-rw-r--r-- | luni/src/test/java/tests/api/java/lang/ref/PhantomReferenceTest.java | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/luni/src/test/java/tests/api/java/lang/ref/PhantomReferenceTest.java b/luni/src/test/java/tests/api/java/lang/ref/PhantomReferenceTest.java deleted file mode 100644 index 6470579..0000000 --- a/luni/src/test/java/tests/api/java/lang/ref/PhantomReferenceTest.java +++ /dev/null @@ -1,141 +0,0 @@ -/* - * 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 java.lang.ref.PhantomReference; -import java.lang.ref.Reference; -import java.lang.ref.ReferenceQueue; -import libcore.java.lang.ref.FinalizationTester; - -//TODO: write a test to verify that the referent's finalize() happens -// before the PhantomReference is enqueued. - -public class PhantomReferenceTest extends junit.framework.TestCase { - static Boolean bool; - public boolean isCalled = false; - protected void doneSuite() { - bool = null; - } - - /** - * java.lang.ref.PhantomReference#get() - */ - public void test_get() { - ReferenceQueue rq = new ReferenceQueue(); - bool = new Boolean(false); - PhantomReference pr = new PhantomReference(bool, rq); - assertNull("get() should return null.", pr.get()); - pr.enqueue(); - assertNull("get() should return null.", pr.get()); - pr.clear(); - assertNull("get() should return null.", pr.get()); - } - - /** - * java.lang.Runtime#gc() - */ - public void test_gcInteraction() { - class TestPhantomReference<T> extends PhantomReference<T> { - public TestPhantomReference(T referent, - ReferenceQueue<? super T> q) { - super(referent, q); - } - public boolean enqueue() { - // Initiate another GC from inside enqueue() to - // see if it causes any problems inside the VM. - Runtime.getRuntime().gc(); - return super.enqueue(); - } - } - - final ReferenceQueue rq = new ReferenceQueue(); - final PhantomReference[] tprs = new PhantomReference[4]; - - class TestThread extends Thread { - public void run() { - // Create the object in a separate thread to ensure - // it will be gc'ed. - Object obj = new Object(); - tprs[0] = new TestPhantomReference(obj, rq); - tprs[1] = new TestPhantomReference(obj, rq); - tprs[2] = new TestPhantomReference(obj, rq); - tprs[3] = new TestPhantomReference(obj, rq); - } - } - - try { - Thread t = new TestThread(); - t.start(); - t.join(); - - FinalizationTester.induceFinalization(); - - assertNull("get() should return null.", tprs[0].get()); - assertNull("get() should return null.", tprs[1].get()); - assertNull("get() should return null.", tprs[2].get()); - assertNull("get() should return null.", tprs[3].get()); - - for (int i = 0; i < 4; i++) { - Reference r = rq.remove(100L); - assertNotNull("Reference should have been enqueued.", r); - } - - // These are to make sure that tprs and its elements don't get - // optimized out. - assertNull("get() should return null.", tprs[0].get()); - assertNull("get() should return null.", tprs[1].get()); - assertNull("get() should return null.", tprs[2].get()); - assertNull("get() should return null.", tprs[3].get()); - } catch (InterruptedException e) { - fail("InterruptedException : " + e.getMessage()); - } - } - - /** - * java.lang.ref.PhantomReference#PhantomReference(java.lang.Object, - * java.lang.ref.ReferenceQueue) - */ - public void test_ConstructorLjava_lang_ObjectLjava_lang_ref_ReferenceQueue() { - ReferenceQueue rq = new ReferenceQueue(); - bool = new Boolean(true); - try { - PhantomReference pr = new PhantomReference(bool, rq); - // Allow the finalizer to run to potentially enqueue - Thread.sleep(1000); - assertTrue("Initialization failed.", !pr.isEnqueued()); - } catch (Exception e) { - fail("Exception during test : " + e.getMessage()); - } - // need a reference to bool so the jit does not optimize it away - assertTrue("should always pass", bool.booleanValue()); - - boolean exception = false; - try { - new PhantomReference(bool, null); - } catch (NullPointerException e) { - exception = true; - } - assertTrue("Should not throw NullPointerException", !exception); - } - - protected void setUp() { - } - - protected void tearDown() { - } -} |