Add LazyInitializer tests

src/test/java/org/apache/commons/lang3/concurrent/LazyInitializerAnonClassTest.java

@@ -0,0 +1,39 @@
+/*
+ * 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;
+
+/**
+ * Tests {@code LazyInitializer}.
+ */
+public class LazyInitializerAnonClassTest extends AbstractConcurrentInitializerTest {
+
+    /**
+     * Creates the initializer to be tested. This implementation returns the {@code LazyInitializer} created in the {@code setUp()} method.
+     *
+     * @return the initializer to be tested
+     */
+    @Override
+    protected ConcurrentInitializer<Object> createInitializer() {
+        return new LazyInitializer<Object>() {
+            @Override
+            protected Object initialize() {
+                return new Object();
+            }
+        };
+    }
+
+}

src/test/java/org/apache/commons/lang3/concurrent/LazyInitializerSimpleTest.java

@@ -0,0 +1,45 @@
+/*
+ * 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;
+
+/**
+ * Tests {@code LazyInitializer}.
+ */
+public class LazyInitializerSimpleTest extends AbstractConcurrentInitializerTest {
+
+    /**
+     * A test implementation of LazyInitializer. This class creates a plain Object. As Object does not provide a specific equals() method, it is easy to check
+     * whether multiple instances were created.
+     */
+    private static final class LazyInitializerTestImpl extends LazyInitializer<Object> {
+        @Override
+        protected Object initialize() {
+            return new Object();
+        }
+    }
+
+    /**
+     * Creates the initializer to be tested. This implementation returns the {@code LazyInitializer} created in the {@code setUp()} method.
+     *
+     * @return the initializer to be tested
+     */
+    @Override
+    protected ConcurrentInitializer<Object> createInitializer() {
+        return new LazyInitializerTestImpl();
+    }
+
+}

src/test/java/org/apache/commons/lang3/concurrent/LazyInitializerSingleInstanceTest.java

@@ -19,20 +19,26 @@ package org.apache.commons.lang3.concurrent;
 import org.junit.jupiter.api.BeforeEach;
 
 /**
- * Test class for {@code LazyInitializer}.
+ * Tests {@code LazyInitializer}.
  */
-public class LazyInitializerTest extends AbstractConcurrentInitializerTest {
+public class LazyInitializerSingleInstanceTest extends AbstractConcurrentInitializerTest {
+
+    /**
+     * A test implementation of LazyInitializer. This class creates a plain Object. As Object does not provide a specific equals() method, it is easy to check
+     * whether multiple instances were created.
+     */
+    private static final class LazyInitializerTestImpl extends LazyInitializer<Object> {
+        @Override
+        protected Object initialize() {
+            return new Object();
+        }
+    }
+
     /** The initializer to be tested. */
     private LazyInitializerTestImpl initializer;
 
-    @BeforeEach
-    public void setUp() {
-        initializer = new LazyInitializerTestImpl();
-    }
-
     /**
-     * Returns the initializer to be tested. This implementation returns the
-     * {@code LazyInitializer} created in the {@code setUp()} method.
+     * Creates the initializer to be tested. This implementation returns the {@code LazyInitializer} created in the {@code setUp()} method.
      *
      * @return the initializer to be tested
      */
@@ -41,16 +47,8 @@ public class LazyInitializerTest extends AbstractConcurrentInitializerTest {
         return initializer;
     }
 
-    /**
-     * A test implementation of LazyInitializer. This class creates a plain
-     * Object. As Object does not provide a specific equals() method, it is easy
-     * to check whether multiple instances were created.
-     */
-    private static final class LazyInitializerTestImpl extends
-            LazyInitializer<Object> {
-        @Override
-        protected Object initialize() {
-            return new Object();
-        }
+    @BeforeEach
+    public void setUp() {
+        initializer = new LazyInitializerTestImpl();
     }
 }