| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.tests.harness.util; |
| |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| |
| /** |
| * <code>CallHistory</code> is used to record the invocation |
| * of methods within a target object. This is useful during |
| * lifecycle testing for an object. |
| * <p> |
| * To use <code>CallHistory</code> .. |
| * <ol> |
| * <li>Create a CallHistory in the target or pass one in.</li> |
| * <li>Invoke some test scenario. </li> |
| * <li>If a method is called on the target record the invocation |
| * in the call history</li> |
| * <li>Verify the call history after the test scenario is |
| * complete.</li> |
| * </ol> |
| * </p><p> |
| * Each <code>CallHistory</code> has a target which is used to |
| * verify the method names passed to the history. If an invalid |
| * name is passed an <code>IllegalArgumentException</code> will |
| * be thrown. |
| * </p> |
| */ |
| public class CallHistory { |
| private ArrayList methodList; |
| |
| private Class classType; |
| |
| /** |
| * Creates a new call history for an object. |
| * |
| * @param target the call history target. |
| */ |
| public CallHistory(Object target) { |
| methodList = new ArrayList(); |
| classType = target.getClass(); |
| } |
| |
| /** |
| * Throws an exception if the method name is invalid |
| * for the given target class. |
| */ |
| private void testMethodName(String methodName) { |
| Method[] methods = classType.getMethods(); |
| for (int i = 0; i < methods.length; i++) |
| if (methods[i].getName().equals(methodName)) |
| return; |
| throw new IllegalArgumentException("Target class (" |
| + classType.getName() + ") does not contain method: " |
| + methodName); |
| } |
| |
| /** |
| * Adds a method name to the call history. |
| * |
| * @param methodName the name of a method |
| */ |
| public void add(String methodName) { |
| testMethodName(methodName); |
| methodList.add(methodName); |
| } |
| |
| /** |
| * Clears the call history. |
| */ |
| public void clear() { |
| methodList.clear(); |
| } |
| |
| /** |
| * Returns whether a list of methods have been called in |
| * order. |
| * |
| * @param testNames an array of the method names in the order they are expected |
| * @return <code>true</code> if the methods were called in order |
| */ |
| public boolean verifyOrder(String[] testNames) |
| throws IllegalArgumentException { |
| int testIndex = 0; |
| int testLength = testNames.length; |
| if (testLength == 0) |
| return true; |
| for (int nX = 0; nX < methodList.size(); nX++) { |
| String methodName = (String) methodList.get(nX); |
| String testName = testNames[testIndex]; |
| testMethodName(testName); |
| if (testName.equals(methodName)) |
| ++testIndex; |
| if (testIndex >= testLength) |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns whether a method has been called. |
| * |
| * @param methodName a method name |
| * @return <code>true</code> if the method was called |
| */ |
| public boolean contains(String methodName) { |
| testMethodName(methodName); |
| return methodList.contains(methodName); |
| } |
| |
| /** |
| * Returns whether a list of methods were called. |
| * |
| * @param methodNames a list of methods |
| * @return <code>true</code> if the methods were called |
| */ |
| public boolean contains(String[] methodNames) { |
| for (int i = 0; i < methodNames.length; i++) { |
| testMethodName(methodNames[i]); |
| if (!methodList.contains(methodNames[i])) |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Returns whether the list of methods called is empty. |
| * |
| * @return <code>true</code> iff the list of methods is empty |
| */ |
| public boolean isEmpty() { |
| return methodList.isEmpty(); |
| } |
| |
| /** |
| * Prints the call history to the console. |
| */ |
| public void printToConsole() { |
| for (int i = 0; i < methodList.size(); i++) |
| System.out.println(methodList.get(i)); |
| } |
| } |