1 files changed, 121 insertions, 0 deletions
diff --git a/harmony-tests/src/test/java/org/apache/harmony/tests/java/lang/reflect/GenericMethodsTests.java b/harmony-tests/src/test/java/org/apache/harmony/tests/java/lang/reflect/GenericMethodsTests.java
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+++ b/harmony-tests/src/test/java/org/apache/harmony/tests/java/lang/reflect/GenericMethodsTests.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.apache.harmony.tests.java.lang.reflect;
+
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+
+
+/**
+ * Tests unbounded type parameters declared on methods.
+ */
+public class GenericMethodsTests extends GenericReflectionTestsBase{
+
+    static class GenericMethods {
+
+        public <T> void noParamNoReturn() {}
+
+        public <T> void paramNoReturn(T param) {}
+
+        @SuppressWarnings("unchecked")
+        public <T> T noParamReturn() { return (T) new Object(); }
+
+        public <T> T paramReturn(T param) {return param;}
+    }
+
+    private static Class<? extends GenericMethods> clazz = GenericMethodsTests.GenericMethods.class;
+
+    /**
+     * Tests that there are no Type Parameters on the Class itself.
+     */
+    public void testGenericMethods() {
+        assertLenghtZero(clazz.getTypeParameters());
+    }
+
+    /**
+     * Tests whether the specified method declares a type parameter T.
+     * @param method the method
+     */
+    private void checkTypeParameter(Method method) {
+        TypeVariable<Method> typeParameter = getTypeParameter(method);
+        assertEquals("T", typeParameter.getName());
+        assertEquals(method, typeParameter.getGenericDeclaration());
+    }
+
+    /**
+     * Tests whether the specified method declares a parameter with the
+     * type of the type parameter.
+     * @param method the method
+     */
+    private void checkParameterType(Method method) {
+        TypeVariable<Method> typeParameter = getTypeParameter(method);
+        assertLenghtOne(method.getGenericParameterTypes());
+        Type genericParameterType = method.getGenericParameterTypes()[0];
+        assertEquals(typeParameter, genericParameterType);
+        assertInstanceOf(TypeVariable.class, genericParameterType);
+        assertEquals(method, ((TypeVariable<?>) genericParameterType).getGenericDeclaration());
+    }
+
+    /**
+     * Tests whether the type of the return type is the declared type parameter.
+     * @param method the declaring method
+     */
+    private void checkReturnType(Method method) {
+        TypeVariable<Method> typeParameter = getTypeParameter(method);
+        Type genericReturnType = method.getGenericReturnType();
+        assertEquals(typeParameter, genericReturnType);
+        assertInstanceOf(TypeVariable.class, genericReturnType);
+        assertEquals(method, ((TypeVariable<?>) genericReturnType).getGenericDeclaration());
+    }
+    public void testNoParamNoReturn() throws Exception {
+        Method method = clazz.getMethod("noParamNoReturn");
+        checkTypeParameter(method);
+    }
+
+    public void testParamNoReturn() throws Exception {
+        Method method = clazz.getMethod("paramNoReturn", Object.class);
+        checkTypeParameter(method);
+        checkParameterType(method);
+    }
+
+    public void testNoParamReturn() throws Exception {
+        Method method = clazz.getMethod("noParamReturn");
+        checkTypeParameter(method);
+        assertLenghtZero(method.getGenericParameterTypes());
+        checkReturnType(method);
+    }
+    public void testParamReturn() throws Exception {
+        Method method = clazz.getMethod("paramReturn", Object.class);
+        checkTypeParameter(method);
+        checkParameterType(method);
+        checkReturnType(method);
+    }
+    public void testIndependencyOfMethodTypeParameters() throws Exception {
+        Method method0 = clazz.getMethod("paramNoReturn", Object.class);
+        TypeVariable<Method> typeParameter0 = method0.getTypeParameters()[0];
+
+        Method method1 = clazz.getMethod("noParamNoReturn");
+        TypeVariable<Method> typeParameter1 = method1.getTypeParameters()[0];
+
+        //Generic method type parameters NAMES are equal
+        assertEquals(typeParameter0.getName(), typeParameter1.getName());
+        //Generic method type PARAMETERS are not equal
+        assertNotEquals(typeParameter0, typeParameter1);
+    }
+}