| /* |
| * 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 com.alibaba.dubbo.common.utils; |
| |
| import junit.framework.TestCase; |
| import org.junit.Test; |
| |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import static org.junit.Assert.assertThat; |
| import static org.junit.matchers.JUnitMatchers.containsString; |
| |
| public class ReflectUtilsTest extends TestCase { |
| public void testIsCompatible() throws Exception { |
| assertEquals(ReflectUtils.isCompatible(short.class, (short) 1), true); |
| assertEquals(ReflectUtils.isCompatible(int.class, 1), true); |
| assertEquals(ReflectUtils.isCompatible(double.class, 1.2), true); |
| assertEquals(ReflectUtils.isCompatible(Object.class, 1.2), true); |
| assertEquals(ReflectUtils.isCompatible(List.class, new ArrayList<String>()), true); |
| } |
| |
| public void testNameDesc() throws Exception { |
| // getName |
| assertEquals("boolean", ReflectUtils.getName(boolean.class)); |
| assertEquals("int[][][]", ReflectUtils.getName(int[][][].class)); |
| assertEquals("java.lang.Object[][]", ReflectUtils.getName(Object[][].class)); |
| |
| // getDesc |
| assertEquals("Z", ReflectUtils.getDesc(boolean.class)); |
| assertEquals("[[[I", ReflectUtils.getDesc(int[][][].class)); |
| assertEquals("[[Ljava/lang/Object;", ReflectUtils.getDesc(Object[][].class)); |
| |
| // name2desc |
| assertEquals("Z", ReflectUtils.name2desc(ReflectUtils.getName(boolean.class))); |
| assertEquals("[[[I", ReflectUtils.name2desc(ReflectUtils.getName(int[][][].class))); |
| assertEquals("[[Ljava/lang/Object;", ReflectUtils.name2desc(ReflectUtils.getName(Object[][].class))); |
| |
| // desc2name |
| assertEquals("short[]", ReflectUtils.desc2name(ReflectUtils.getDesc(short[].class))); |
| assertEquals("int", ReflectUtils.desc2name(ReflectUtils.getDesc(int.class))); |
| assertEquals("java.lang.Object[][]", ReflectUtils.desc2name(ReflectUtils.getDesc(Object[][].class))); |
| } |
| |
| public void testName2Class() throws Exception { |
| assertEquals(boolean.class, ReflectUtils.name2class("boolean")); |
| assertEquals(boolean[].class, ReflectUtils.name2class("boolean[]")); |
| assertEquals(int[][].class, ReflectUtils.name2class(ReflectUtils.getName(int[][].class))); |
| assertEquals(ReflectUtilsTest[].class, ReflectUtils.name2class(ReflectUtils.getName(ReflectUtilsTest[].class))); |
| } |
| |
| public void testDesc2Class() throws Exception { |
| assertEquals(boolean.class, ReflectUtils.desc2class("Z")); |
| assertEquals(boolean[].class, ReflectUtils.desc2class("[Z")); |
| assertEquals(int[][].class, ReflectUtils.desc2class(ReflectUtils.getDesc(int[][].class))); |
| assertEquals(ReflectUtilsTest[].class, ReflectUtils.desc2class(ReflectUtils.getDesc(ReflectUtilsTest[].class))); |
| |
| String desc; |
| Class<?>[] cs; |
| |
| cs = new Class<?>[]{int.class, getClass(), String.class, int[][].class, boolean[].class}; |
| desc = ReflectUtils.getDesc(cs); |
| assertSame(cs, ReflectUtils.desc2classArray(desc)); |
| |
| cs = new Class<?>[]{}; |
| desc = ReflectUtils.getDesc(cs); |
| assertSame(cs, ReflectUtils.desc2classArray(desc)); |
| |
| cs = new Class<?>[]{void.class, String[].class, int[][].class, ReflectUtilsTest[][].class}; |
| desc = ReflectUtils.getDesc(cs); |
| assertSame(cs, ReflectUtils.desc2classArray(desc)); |
| } |
| |
| protected void assertSame(Class<?>[] cs1, Class<?>[] cs2) throws Exception { |
| assertEquals(cs1.length, cs2.length); |
| for (int i = 0; i < cs1.length; i++) |
| assertEquals(cs1[i], cs2[i]); |
| } |
| |
| @Test |
| public void test_findMethodByMethodSignature() throws Exception { |
| Method m = ReflectUtils.findMethodByMethodSignature(TestedClass.class, "method1", null); |
| |
| assertEquals("method1", m.getName()); |
| Class<?>[] parameterTypes = m.getParameterTypes(); |
| assertEquals(1, parameterTypes.length); |
| assertEquals(int.class, parameterTypes[0]); |
| } |
| |
| @Test |
| public void test_findMethodByMethodSignature_override() throws Exception { |
| { |
| Method m = ReflectUtils.findMethodByMethodSignature(TestedClass.class, |
| "overrideMethod", new String[]{"int"}); |
| |
| assertEquals("overrideMethod", m.getName()); |
| Class<?>[] parameterTypes = m.getParameterTypes(); |
| assertEquals(1, parameterTypes.length); |
| assertEquals(int.class, parameterTypes[0]); |
| } |
| { |
| Method m = ReflectUtils.findMethodByMethodSignature(TestedClass.class, |
| "overrideMethod", new String[]{"java.lang.Integer"}); |
| |
| assertEquals("overrideMethod", m.getName()); |
| Class<?>[] parameterTypes = m.getParameterTypes(); |
| assertEquals(1, parameterTypes.length); |
| assertEquals(Integer.class, parameterTypes[0]); |
| } |
| } |
| |
| @Test |
| public void test_findMethodByMethodSignature_override_Morethan1() throws Exception { |
| try { |
| ReflectUtils.findMethodByMethodSignature(TestedClass.class, "overrideMethod", null); |
| fail(); |
| } catch (IllegalStateException expected) { |
| assertThat(expected.getMessage(), containsString( |
| "Not unique method for method name(")); |
| } |
| } |
| |
| @Test |
| public void test_findMethodByMethodSignature_notFound() throws Exception { |
| try { |
| ReflectUtils.findMethodByMethodSignature(TestedClass.class, "notExsited", null); |
| fail(); |
| } catch (NoSuchMethodException expected) { |
| assertThat(expected.getMessage(), containsString("No such method ")); |
| assertThat(expected.getMessage(), containsString("in class")); |
| } |
| } |
| |
| @Test |
| public void test_getEmptyObject() throws Exception { |
| assertTrue(ReflectUtils.getEmptyObject(Collection.class) instanceof Collection); |
| assertTrue(ReflectUtils.getEmptyObject(List.class) instanceof List); |
| assertTrue(ReflectUtils.getEmptyObject(Set.class) instanceof Set); |
| assertTrue(ReflectUtils.getEmptyObject(Map.class) instanceof Map); |
| assertTrue(ReflectUtils.getEmptyObject(Object[].class) instanceof Object[]); |
| assertEquals(ReflectUtils.getEmptyObject(String.class), ""); |
| assertEquals(ReflectUtils.getEmptyObject(short.class), Short.valueOf((short) 0)); |
| assertEquals(ReflectUtils.getEmptyObject(byte.class), Byte.valueOf((byte) 0)); |
| assertEquals(ReflectUtils.getEmptyObject(int.class), Integer.valueOf(0)); |
| assertEquals(ReflectUtils.getEmptyObject(long.class), Long.valueOf(0)); |
| assertEquals(ReflectUtils.getEmptyObject(float.class), Float.valueOf(0)); |
| assertEquals(ReflectUtils.getEmptyObject(double.class), Double.valueOf(0)); |
| assertEquals(ReflectUtils.getEmptyObject(char.class), Character.valueOf('\0')); |
| assertEquals(ReflectUtils.getEmptyObject(boolean.class), Boolean.FALSE); |
| EmptyClass object = (EmptyClass) ReflectUtils.getEmptyObject(EmptyClass.class); |
| assertNotNull(object); |
| assertNotNull(object.getProperty()); |
| } |
| |
| public static class EmptyClass { |
| |
| private EmptyProperty property; |
| |
| public EmptyProperty getProperty() { |
| return property; |
| } |
| |
| public void setProperty(EmptyProperty property) { |
| this.property = property; |
| } |
| |
| } |
| |
| public static class EmptyProperty { |
| } |
| |
| static class TestedClass { |
| public void method1(int x) { |
| } |
| |
| public void overrideMethod(int x) { |
| } |
| |
| public void overrideMethod(Integer x) { |
| } |
| |
| public void overrideMethod(String s) { |
| } |
| |
| public void overrideMethod(String s1, String s2) { |
| } |
| } |
| |
| } |