Added equals and hashcode

org.springframework.core/src/test/java/org/springframework/core/MethodParameterTests.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright 2002-2011 the original author or authors.
+ *
+ * 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 org.springframework.core;
+
+import java.lang.reflect.Method;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Arjen Poutsma
+ */
+public class MethodParameterTests {
+
+	private MethodParameter stringParameter;
+
+	private MethodParameter longParameter;
+
+	private MethodParameter intReturnType;
+
+	@Before
+	public void setUp() throws NoSuchMethodException {
+		Method method = getClass().getMethod("method", String.class, Long.TYPE);
+		stringParameter = new MethodParameter(method, 0);
+		longParameter = new MethodParameter(method, 1);
+		intReturnType = new MethodParameter(method, -1);
+	}
+
+
+	
+	@Test
+	public void testEquals() throws NoSuchMethodException {
+		assertEquals(stringParameter, stringParameter);
+		assertEquals(longParameter, longParameter);
+		assertEquals(intReturnType, intReturnType);
+
+		assertFalse(stringParameter.equals(longParameter));
+		assertFalse(stringParameter.equals(intReturnType));
+		assertFalse(longParameter.equals(stringParameter));
+		assertFalse(longParameter.equals(intReturnType));
+		assertFalse(intReturnType.equals(stringParameter));
+		assertFalse(intReturnType.equals(longParameter));
+
+		Method method = getClass().getMethod("method", String.class, Long.TYPE);
+		MethodParameter methodParameter = new MethodParameter(method, 0);
+		assertEquals(stringParameter, methodParameter);
+		assertEquals(methodParameter, stringParameter);
+		assertFalse(longParameter.equals(methodParameter));
+		assertFalse(methodParameter.equals(longParameter));
+	}
+
+	@Test
+	public void testHashCode() throws NoSuchMethodException {
+		assertEquals(stringParameter.hashCode(), stringParameter.hashCode());
+		assertEquals(longParameter.hashCode(), longParameter.hashCode());
+		assertEquals(intReturnType.hashCode(), intReturnType.hashCode());
+
+		Method method = getClass().getMethod("method", String.class, Long.TYPE);
+		MethodParameter methodParameter = new MethodParameter(method, 0);
+		assertEquals(stringParameter.hashCode(), methodParameter.hashCode());
+		assertTrue(longParameter.hashCode() != methodParameter.hashCode());
+	}
+
+
+	public int method(String p1, long p2) {
+		return 42;
+	}
+
+}