/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.core.util;
import static org.junit.Assert.*;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
/**
* TestReflectionHelper
*/
@SuppressWarnings("unchecked")
public class TestReflectionHelper {
// =========================================================================
// H E L P E R M E T H O D S
// =========================================================================
/**
* Verify the Class[] arrays compare equal element for element.
* @param msg msg to display
* @param signatureSought
* @param signatureFound
* @since 4.4
*/
private void helpAssertSameMethodSignature(String msg,
Class[] signatureSought,
Class[] signatureFound) {
assertEquals(msg + ": sizes differ.", signatureSought.length, signatureFound.length); //$NON-NLS-1$
for (int i=0; i<signatureSought.length; ++i) {
assertEquals(msg + " for argument # " + (i + 1), signatureSought[i], signatureFound[i]); //$NON-NLS-1$
}
}
// =========================================================================
// T E S T C A S E S
// =========================================================================
@Test public void testConstructorWithNullTargetClass() {
try {
new ReflectionHelper(null);
fail("Should have caught null target class passed to constructor"); //$NON-NLS-1$
} catch (IllegalArgumentException e) {
// expected
}
}
@Test public void testConstructorWithValidTargetClass() {
final ReflectionHelper helper = new ReflectionHelper(String.class);
assertNotNull(helper);
}
// ===============================================================================================
// Test overloaded methods
// ===============================================================================================
@Test public void testFindBestMethodWithSignature_String() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {String.class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_Serializable() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Serializable.class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_Object() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {NullPointerException.class};
try {
helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
fail("exception expected"); //$NON-NLS-1$
} catch (NoSuchMethodException e) {
assertEquals("method Args: [class java.lang.NullPointerException] has multiple possible signatures.", e.getMessage()); //$NON-NLS-1$
}
}
@Test public void testFindBestMethodWithSignature_StringArray() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {String[].class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_Integer() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Integer.class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_long() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Long.TYPE};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_2ArgSerializableAndNumber() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Integer.class, Integer.class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class, Number.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
// ===============================================================================================
// Test explicit method names
// ===============================================================================================
@Test public void testFindBestMethodWithSignature_StringAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {String.class};
Method theMethod = helper.findBestMethodWithSignature("methodString", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_ObjectAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {NullPointerException.class};
Method theMethod = helper.findBestMethodWithSignature("methodObject", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Object.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_SerializableAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {NullPointerException.class};
Method theMethod = helper.findBestMethodWithSignature("methodSerializable", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_ObjectSerializableAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {NullPointerException.class};
Method theMethod = helper.findBestMethodWithSignature("methodSerializable", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_IntegerSerializableAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Integer.class};
Method theMethod = helper.findBestMethodWithSignature("methodSerializable", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_StringArrayAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {String[].class};
Method theMethod = helper.findBestMethodWithSignature("methodStringArray", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_ListAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {ArrayList.class};
Method theMethod = helper.findBestMethodWithSignature("methodList", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {List.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_IntegerAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Integer.class};
Method theMethod = helper.findBestMethodWithSignature("methodInteger", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_IntegerObjectAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Integer.class};
Method theMethod = helper.findBestMethodWithSignature("methodObject", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Object.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_LongObjectAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Long.class};
Method theMethod = helper.findBestMethodWithSignature("methodObject", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Object.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_longAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Long.TYPE};
Method theMethod = helper.findBestMethodWithSignature("method_long", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
// ===============================================================================================
// Test 2-arg methods
// ===============================================================================================
@Test public void testFindBestMethodWithSignature_2ArgIntegerObjectAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Integer.class, Integer.class};
Method theMethod = helper.findBestMethodWithSignature("twoArgMethod_Object_Object", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Object.class, Object.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_2ArgLongObjectAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Long.class, Long.class};
Method theMethod = helper.findBestMethodWithSignature("twoArgMethod_Object_Object", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Object.class, Object.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_2ArgSerializableNumberAndMethodName() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeInterface.class);
Class[] signatureSought = new Class[] {Long.class, Long.class};
Method theMethod = helper.findBestMethodWithSignature("twoArgMethod_Serializable_Number", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class, Number.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
// ===============================================================================================
// Test overridden methods
// ===============================================================================================
@Test public void testFindBestMethodWithSignature_SubInterface_2ArgSerializableAndNumber() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeSubInterface.class);
Class[] signatureSought = new Class[] {Serializable.class, Number.class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = signatureSought;
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeSubInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testFindBestMethodWithSignature_SubInterface_2ArgSerializableAndLong() throws Exception {
ReflectionHelper helper = new ReflectionHelper(FakeSubInterface.class);
Class[] signatureSought = new Class[] {Serializable.class, Long.class};
Method theMethod = helper.findBestMethodWithSignature("method", signatureSought ); //$NON-NLS-1$
assertNotNull("Failed to find method for args: " + signatureSought, theMethod); //$NON-NLS-1$
// make sure we got the method we expected
Class[] signatureFound = theMethod.getParameterTypes();
Class[] signatureExpected = new Class[] {Serializable.class, Long.class};
assertEquals("Wrong class", theMethod.getDeclaringClass().getName(), FakeSubInterface.class.getName()); //$NON-NLS-1$
helpAssertSameMethodSignature("Found wrong method signature", signatureExpected, signatureFound); //$NON-NLS-1$
}
@Test public void testCreate() throws Exception {
ReflectionHelper.create(SomeClass.class.getName(), Arrays.asList(true), null);
}
/**
* Test base interface
*/
public interface FakeInterface {
void method(String arg);
void method(Serializable arg);
void method(Object arg);
void method(String[] arg);
void method(List arg);
void method(Integer arg);
void method(long arg);
void method(Serializable arg1, Number arg2);
void methodString(String arg);
void methodSerializable(Serializable arg);
void methodObject(Object arg);
void methodStringArray(String[] arg);
void methodList(List arg);
void methodInteger(Integer arg);
void method_long(long arg);
void twoArgMethod_Object_Object(Object arg1, Object arg2);
void twoArgMethod_Serializable_Number(Serializable arg1, Number arg2);
}
/**
* Test sub interface
*/
public interface FakeSubInterface extends FakeInterface {
void method(Number arg1, Long arg2);
void method(Serializable arg1, Number arg2);
void method(Serializable arg1, Long arg2);
}
public static class SomeClass {
public SomeClass(boolean primArg) {
}
}
}