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Diffstat (limited to 'src/test/java/org/apache/commons/lang3/concurrent/AtomicInitializerObjectTest.java')
-rw-r--r-- | src/test/java/org/apache/commons/lang3/concurrent/AtomicInitializerObjectTest.java | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/concurrent/AtomicInitializerObjectTest.java b/src/test/java/org/apache/commons/lang3/concurrent/AtomicInitializerObjectTest.java new file mode 100644 index 000000000..9ab1be5be --- /dev/null +++ b/src/test/java/org/apache/commons/lang3/concurrent/AtomicInitializerObjectTest.java @@ -0,0 +1,62 @@ +/* + * 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 org.apache.commons.lang3.concurrent; + +import static org.junit.jupiter.api.Assertions.assertNull; + +import java.util.concurrent.atomic.AtomicBoolean; + +import org.junit.jupiter.api.Test; + +/** + * Test class for {@code AtomicInitializer}. + */ +public class AtomicInitializerObjectTest extends AbstractConcurrentInitializerTest<Object> { + + /** + * Returns the initializer to be tested. + * + * @return the {@code AtomicInitializer} + */ + @Override + protected ConcurrentInitializer<Object> createInitializer() { + return new AtomicInitializer<Object>() { + @Override + protected Object initialize() { + return new Object(); + } + }; + } + + @Test + public void testGetThatReturnsNullFirstTime() throws ConcurrentException { + final AtomicInitializer<Object> initializer = new AtomicInitializer<Object>() { + final AtomicBoolean firstRun = new AtomicBoolean(true); + + @Override + protected Object initialize() { + if (firstRun.getAndSet(false)) { + return null; + } + return new Object(); + } + }; + + assertNull(initializer.get()); + assertNull(initializer.get()); + } +} |