| /* |
| * Copyright 2001-2004 The Apache Software Foundation. |
| * |
| * 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.commons.beanutils; |
| |
| |
| import java.io.OutputStream; |
| import java.io.PrintStream; |
| |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| |
| import org.apache.commons.beanutils.priv.PrivateBeanFactory; |
| import org.apache.commons.beanutils.priv.PublicSubBean; |
| |
| import junit.framework.TestCase; |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| |
| /** |
| * <p> Test case for <code>MethodUtils</code> </p> |
| * |
| */ |
| public class MethodUtilsTestCase extends TestCase { |
| |
| // ---------------------------------------------------- Instance Variables |
| |
| protected PrivateBeanFactory privateBeanFactory; |
| |
| // ---------------------------------------------------------- Constructors |
| |
| /** |
| * Construct a new instance of this test case. |
| * |
| * @param name Name of the test case |
| */ |
| public MethodUtilsTestCase(String name) { |
| super(name); |
| } |
| |
| |
| // -------------------------------------------------- Overall Test Methods |
| |
| |
| /** |
| * Set up instance variables required by this test case. |
| */ |
| public void setUp() { |
| privateBeanFactory = new PrivateBeanFactory(); |
| } |
| |
| |
| /** |
| * Return the tests included in this test suite. |
| */ |
| public static Test suite() { |
| return (new TestSuite(MethodUtilsTestCase.class)); |
| } |
| |
| /** |
| * Tear down instance variables required by this test case. |
| */ |
| public void tearDown() { |
| privateBeanFactory = null; |
| } |
| |
| |
| // ------------------------------------------------ Individual Test Methods |
| |
| /** |
| * <p> Test <code>getAccessibleMethod</code>. |
| */ |
| public void testGetAccessibleMethod() { |
| // test MethodUtils.getAccessibleMethod |
| // we'll make things easier by using the convenience methods |
| |
| // easy bit first - find a public method |
| // METHOD ONE |
| Method method = MethodUtils.getAccessibleMethod |
| (TestBean.class, "setStringProperty", String.class); |
| |
| // check that we've found one that matches |
| assertNotNull(method); |
| assertEquals("method ONE is named correctly", |
| "setStringProperty", method.getName()); |
| assertTrue("Method ONE is public", |
| Modifier.isPublic(method.getModifiers())); |
| |
| // trickier this one - find a method in a direct interface |
| // METHOD TWO |
| method = MethodUtils.getAccessibleMethod |
| (privateBeanFactory.create().getClass(), |
| "methodBar", |
| String.class); |
| |
| // check that we've found one that matches |
| assertNotNull(method); |
| assertEquals("Method TWO is named correctly", |
| "methodBar", method.getName()); |
| assertTrue("Method TWO is public", |
| Modifier.isPublic(method.getModifiers())); |
| |
| // trickier this one - find a method in a indirect interface |
| // METHOD THREE |
| method = MethodUtils.getAccessibleMethod |
| (privateBeanFactory.createSubclass().getClass(), |
| "methodBaz", |
| String.class); |
| |
| // check that we've found one that matches |
| assertNotNull(method); |
| assertEquals("Method THREE is named correctly", |
| "methodBaz", method.getName()); |
| assertTrue("Method THREE is public", |
| Modifier.isPublic(method.getModifiers())); |
| |
| } |
| |
| |
| /** |
| * <p> Test <code>invokeExactMethod</code>. |
| */ |
| public void testInvokeExactMethod() { |
| // test MethodUtils.invokeExactMethod |
| // easy bit first - invoke a public method |
| // METHOD ONE |
| try { |
| |
| TestBean bean = new TestBean(); |
| Object ret = MethodUtils.invokeExactMethod(bean, "setStringProperty", "TEST"); |
| // check that the return's right and that the properties been set |
| assertNull(ret); |
| assertEquals("Method ONE was invoked", "TEST", bean.getStringProperty()); |
| |
| } catch (Throwable t) { |
| // ONE |
| fail("Exception in method ONE prevented invokation: " + t.toString()); |
| } |
| |
| // trickier this one - find a method in a direct interface |
| // METHOD TWO FAILURE |
| try { |
| |
| Object ret = MethodUtils.invokeExactMethod( |
| privateBeanFactory.create(), |
| "methodBar", |
| "ANOTHER TEST"); |
| |
| // check that we've found one that matches |
| assertEquals("Method TWO was invoked correctly", "ANOTHER TEST", ret); |
| |
| } catch (Throwable t) { |
| // METHOD TWO FAILURE |
| fail("Exception in method TWO prevented invokation: " + t.toString()); |
| } |
| |
| |
| // trickier this one - find a method in a indirect interface |
| // METHOD THREE |
| try { |
| |
| Object ret = MethodUtils.invokeExactMethod( |
| privateBeanFactory.createSubclass(), |
| "methodBaz", |
| "YET ANOTHER TEST"); |
| |
| |
| // check that we've found one that matches |
| assertEquals("Method TWO was invoked correctly", "YET ANOTHER TEST", ret); |
| |
| |
| } catch (Throwable t) { |
| // METHOD THREE FAILURE |
| fail("Exception in method THREE prevented invokation: " + t.toString()); |
| |
| } |
| } |
| |
| /** |
| * <p> Test <code>invokeMethod</code>. |
| */ |
| public void testInvokeMethod() throws Exception { |
| // i'm going to test that the actual calls work first and then try them via reflection |
| |
| AbstractParent parent = new AlphaBean("parent"); |
| |
| // try testAddChild through abstract superclass |
| BetaBean childOne = new BetaBean("ChildOne"); |
| |
| assertEquals("Oh no! Badly coded test case! (1)", "ChildOne", parent.testAddChild(childOne)); |
| |
| // let's try MethodUtils version |
| assertEquals( |
| "Cannot invoke through abstract class (1)", |
| "ChildOne", |
| MethodUtils.invokeMethod(parent, "testAddChild", childOne)); |
| |
| |
| // try adding through interface |
| AlphaBean childTwo = new AlphaBean("ChildTwo"); |
| |
| assertEquals("Oh no! Badly coded test case! (2)", "ChildTwo", parent.testAddChild(childTwo)); |
| |
| // let's try MethodUtils version |
| assertEquals( |
| "Cannot invoke through interface (1)", |
| "ChildTwo", |
| MethodUtils.invokeMethod(parent, "testAddChild", childTwo)); |
| |
| |
| Object[] params = new Object[2]; |
| |
| assertEquals("Oh no! Badly coded test case! (3)", "ChildOne", parent.testAddChild2("parameter", childOne)); |
| |
| |
| // let's try MethodUtils version |
| params[0] = "parameter"; |
| params[1] = childOne; |
| |
| assertEquals( |
| "Cannot invoke through abstract class (1)", |
| "ChildOne", |
| MethodUtils.invokeMethod(parent, "testAddChild2", params)); |
| |
| assertEquals("Oh no! Badly coded test case! (4)", "ChildTwo", parent.testAddChild2("parameter", childTwo)); |
| |
| // let's try MethodUtils version |
| params[0] = "parameter"; |
| params[1] = childTwo; |
| |
| assertEquals( |
| "Cannot invoke through abstract class (1)", |
| "ChildTwo", |
| MethodUtils.invokeMethod(parent, "testAddChild2", params)); |
| |
| // test that exception is correctly thrown when a method cannot be found with matching params |
| try { |
| // the next line |
| parent = new AlphaBean("parent"); |
| childOne = new BetaBean("ChildOne"); |
| MethodUtils.invokeMethod(parent, "bogus", childOne); |
| // should get here! |
| fail("No exception thrown when no appropriate method exists"); |
| |
| } catch (NoSuchMethodException e) { |
| // this is what we're expecting! |
| } |
| |
| MethodUtils.invokeMethod(parent, "getName", null); |
| MethodUtils.invokeMethod(parent, "getName", null, null); |
| MethodUtils.invokeExactMethod(parent, "getName", null); |
| MethodUtils.invokeExactMethod(parent, "getName", null, null); |
| } |
| |
| |
| /** |
| * <p> Test <code>invokeMethod</code> with a primitive. |
| */ |
| public void testInvokeMethodWithPrimitives() throws Exception { |
| // first test that the bean works |
| PrimitiveBean bean = new PrimitiveBean(); |
| bean.setFloat(20.0f); |
| bean.setLong(10l); |
| bean.setBoolean(true); |
| bean.setInt(12); |
| bean.setDouble(25.5d); |
| |
| assertEquals("Bug in PrimitiveBean (1)", 20.0f, bean.getFloat(), 0.01f); |
| assertEquals("Bug in PrimitiveBean (2)", 10, bean.getLong()); |
| assertEquals("Bug in PrimitiveBean (3)", true, bean.getBoolean()); |
| assertEquals("Bug in PrimitiveBean (4)", 12, bean.getInt()); |
| assertEquals("Bug in PrimitiveBean (5)", 25.5d, bean.getDouble(), 0.01f); |
| |
| bean = new PrimitiveBean(); |
| MethodUtils.invokeMethod(bean, "setBoolean", new Boolean(true)); |
| assertEquals("Call boolean property using invokeMethod", true, bean.getBoolean()); |
| |
| bean = new PrimitiveBean(); |
| MethodUtils.invokeMethod(bean, "setFloat", new Float(20.0f)); |
| assertEquals("Call float property using invokeMethod", 20.0f, bean.getFloat(), 0.01f); |
| |
| bean = new PrimitiveBean(); |
| MethodUtils.invokeMethod(bean, "setLong", new Long(10)); |
| assertEquals("Call float property using invokeMethod", 10, bean.getLong()); |
| |
| bean = new PrimitiveBean(); |
| MethodUtils.invokeMethod(bean, "setInt", new Integer(12)); |
| assertEquals("Set float property using invokeMethod", 12, bean.getInt()); |
| |
| bean = new PrimitiveBean(); |
| MethodUtils.invokeMethod(bean, "setDouble", new Double(25.5d)); |
| assertEquals("Set float property using invokeMethod", 25.5d, bean.getDouble(), 0.01d); |
| } |
| |
| |
| /** |
| * Simple tests for accessing static methods via invokeMethod(). |
| */ |
| public void testSimpleStatic1() { |
| |
| TestBean bean = new TestBean(); |
| Object value = null; |
| int current = TestBean.currentCounter(); |
| |
| try { |
| |
| // Return initial value of the counter |
| value = MethodUtils.invokeMethod |
| (bean, "currentCounter", new Object[0], new Class[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| // Increment via no-arguments version |
| MethodUtils.invokeMethod |
| (bean, "incrementCounter", new Object[0], new Class[0]); |
| |
| // Validate updated value |
| current++; |
| value = MethodUtils.invokeMethod |
| (bean, "currentCounter", new Object[0], new Class[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| // Increment via specified-argument version |
| MethodUtils.invokeMethod |
| (bean, "incrementCounter", |
| new Object[] { new Integer(5) }, |
| new Class[] { Integer.TYPE }); |
| |
| // Validate updated value |
| current += 5; |
| value = MethodUtils.invokeMethod |
| (bean, "currentCounter", new Object[0], new Class[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| } catch (Exception e) { |
| fail("Threw exception" + e); |
| } |
| |
| } |
| |
| |
| /** |
| * Simple tests for accessing static methods via invokeExactMethod(). |
| */ |
| public void testSimpleStatic2() { |
| |
| TestBean bean = new TestBean(); |
| Object value = null; |
| int current = TestBean.currentCounter(); |
| |
| try { |
| |
| // Return initial value of the counter |
| value = MethodUtils.invokeExactMethod |
| (bean, "currentCounter", new Object[0], new Class[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| // Increment via no-arguments version |
| MethodUtils.invokeExactMethod |
| (bean, "incrementCounter", new Object[0], new Class[0]); |
| |
| // Validate updated value |
| current++; |
| value = MethodUtils.invokeExactMethod |
| (bean, "currentCounter", new Object[0], new Class[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| // Increment via specified-argument version |
| MethodUtils.invokeExactMethod |
| (bean, "incrementCounter", |
| new Object[] { new Integer(5) }, |
| new Class[] { Integer.TYPE }); |
| |
| // Validate updated value |
| current += 5; |
| value = MethodUtils.invokeExactMethod |
| (bean, "currentCounter", new Object[0], new Class[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| |
| } catch (Exception e) { |
| fail("Threw exception" + e); |
| } |
| |
| } |
| |
| |
| /** |
| * Simple tests for accessing static methods via getAccessibleMethod() |
| */ |
| public void testSimpleStatic3() { |
| |
| Object value = null; |
| int current = TestBean.currentCounter(); |
| |
| try { |
| |
| // Acquire the methods we need |
| Method currentCounterMethod = MethodUtils.getAccessibleMethod |
| (TestBean.class, "currentCounter", |
| new Class[0]); |
| assertNotNull("currentCounterMethod exists", |
| currentCounterMethod); |
| assertEquals("currentCounterMethod name", |
| "currentCounter", |
| currentCounterMethod.getName()); |
| assertEquals("currentCounterMethod args", |
| 0, |
| currentCounterMethod.getParameterTypes().length); |
| assertTrue("currentCounterMethod public", |
| Modifier.isPublic(currentCounterMethod.getModifiers())); |
| assertTrue("currentCounterMethod static", |
| Modifier.isStatic(currentCounterMethod.getModifiers())); |
| Method incrementCounterMethod1 = MethodUtils.getAccessibleMethod |
| (TestBean.class, "incrementCounter", |
| new Class[0]); |
| assertNotNull("incrementCounterMethod1 exists", |
| incrementCounterMethod1); |
| assertEquals("incrementCounterMethod1 name", |
| "incrementCounter", |
| incrementCounterMethod1.getName()); |
| assertEquals("incrementCounterMethod1 args", |
| 0, |
| incrementCounterMethod1.getParameterTypes().length); |
| assertTrue("incrementCounterMethod1 public", |
| Modifier.isPublic(incrementCounterMethod1.getModifiers())); |
| assertTrue("incrementCounterMethod1 static", |
| Modifier.isStatic(incrementCounterMethod1.getModifiers())); |
| Method incrementCounterMethod2 = MethodUtils.getAccessibleMethod |
| (TestBean.class, "incrementCounter", |
| new Class[] { Integer.TYPE }); |
| assertNotNull("incrementCounterMethod2 exists", |
| incrementCounterMethod2); |
| assertEquals("incrementCounterMethod2 name", |
| "incrementCounter", |
| incrementCounterMethod2.getName()); |
| assertEquals("incrementCounterMethod2 args", |
| 1, |
| incrementCounterMethod2.getParameterTypes().length); |
| assertTrue("incrementCounterMethod2 public", |
| Modifier.isPublic(incrementCounterMethod2.getModifiers())); |
| assertTrue("incrementCounterMethod2 static", |
| Modifier.isStatic(incrementCounterMethod2.getModifiers())); |
| |
| // Return initial value of the counter |
| value = currentCounterMethod.invoke(null, new Object[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| // Increment via no-arguments version |
| incrementCounterMethod1.invoke(null, new Object[0]); |
| |
| // Validate updated value |
| current++; |
| value = currentCounterMethod.invoke(null, new Object[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| // Increment via specified-argument version |
| incrementCounterMethod2.invoke(null, |
| new Object[] { new Integer(5) }); |
| |
| // Validate updated value |
| current += 5; |
| value = currentCounterMethod.invoke(null, new Object[0]); |
| assertNotNull("currentCounter exists", value); |
| assertTrue("currentCounter type", |
| value instanceof Integer); |
| assertEquals("currentCounter value", |
| current, |
| ((Integer) value).intValue()); |
| |
| } catch (Exception e) { |
| fail("Threw exception" + e); |
| } |
| |
| } |
| |
| public void testPublicSub() throws Exception { |
| // make sure that bean does what it should |
| PublicSubBean bean = new PublicSubBean(); |
| assertEquals("Start value (foo)", bean.getFoo(), "This is foo"); |
| assertEquals("Start value (bar)", bean.getBar(), "This is bar"); |
| bean.setFoo("new foo"); |
| bean.setBar("new bar"); |
| assertEquals("Set value (foo)", bean.getFoo(), "new foo"); |
| assertEquals("Set value (bar)", bean.getBar(), "new bar"); |
| |
| // see if we can access public methods in a default access superclass |
| // from a public access subclass instance |
| MethodUtils.invokeMethod(bean, "setFoo", "alpha"); |
| assertEquals("Set value (foo:2)", bean.getFoo(), "alpha"); |
| MethodUtils.invokeMethod(bean, "setBar", "beta"); |
| assertEquals("Set value (bar:2)", bean.getFoo(), "alpha"); |
| } |
| |
| public void testParentMethod() throws Exception { |
| OutputStream os = new PrintStream(System.out); |
| PrintStream ps = new PrintStream(System.out); |
| |
| A a = new A(); |
| MethodUtils.invokeMethod(a, "foo", os); |
| assertTrue("Method Invoked(1)", a.called); |
| |
| a = new A(); |
| MethodUtils.invokeMethod(a, "foo", ps); |
| assertTrue("Method Invoked(2)", a.called); |
| } |
| } |