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/*******************************************************************************
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* Copyright (c) 2000, 2008 IBM Corporation and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package org.eclipse.cdt.ui.testplugin.util;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.StringReader;
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import java.util.ArrayList;
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import java.util.Arrays;
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import junit.framework.Assert;
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abstract public class StringAsserts {
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private StringAsserts() {
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private static int getDiffPos(String str1, String str2) {
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int len1= Math.min(str1.length(), str2.length());
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for (int i= 0; i < len1; i++) {
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if (str1.charAt(i) != str2.charAt(i)) {
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if (diffPos == -1 && str1.length() != str2.length()) {
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private static final int printRange= 6;
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public static void assertEqualString(String actual, String expected) {
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if (actual == null || expected == null) {
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if (actual == expected) {
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Assert.assertTrue("Content not as expected: is 'null' expected: " + expected, false);
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Assert.assertTrue("Content not as expected: expected 'null' is: " + actual, false);
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int diffPos= getDiffPos(actual, expected);
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int diffAhead= Math.max(0, diffPos - printRange);
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int diffAfter= Math.min(actual.length(), diffPos + printRange);
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String diffStr= actual.substring(diffAhead, diffPos) + '^' + actual.substring(diffPos, diffAfter);
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// use detailed message
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String message= "Content not as expected: is\n" + actual + "\nDiffers at pos " + diffPos + ": " + diffStr + "\nexpected:\n" + expected; //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
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Assert.assertEquals(message, expected, actual);
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public static void assertEqualStringIgnoreDelim(String actual, String expected) throws IOException {
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if (actual == null || expected == null) {
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if (actual == expected) {
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Assert.assertTrue("Content not as expected: is 'null' expected: " + expected, false);
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Assert.assertTrue("Content not as expected: expected 'null' is: " + actual, false);
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BufferedReader read1= new BufferedReader(new StringReader(actual));
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BufferedReader read2= new BufferedReader(new StringReader(expected));
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String s1= read1.readLine();
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String s2= read2.readLine();
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if (s1 == null || !s1.equals(s2)) {
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if (s1 == null && s2 == null) {
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String diffStr= (s1 == null) ? s2 : s1;
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String message= "Content not as expected: Content is: \n" + actual + "\nDiffers at line " + line + ": " + diffStr + "\nExpected contents: \n" + expected;
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Assert.assertEquals(message, expected, actual);
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public static void assertEqualStringsIgnoreOrder(String[] actuals, String[] expecteds) {
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ArrayList<String> list1= new ArrayList<String>(Arrays.asList(actuals));
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ArrayList<String> list2= new ArrayList<String>(Arrays.asList(expecteds));
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for (int i= list1.size() - 1; i >= 0; i--) {
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if (list2.remove(list1.get(i))) {
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int n1= list1.size();
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int n2= list2.size();
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if (n1 == 1 && n2 == 1) {
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assertEqualString((String) list1.get(0), (String) list2.get(0));
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StringBuffer buf= new StringBuffer();
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for (int i= 0; i < n1; i++) {
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String s1= (String) list1.get(i);
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String actual= buf.toString();
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buf= new StringBuffer();
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for (int i= 0; i < n2; i++) {
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String s2= (String) list2.get(i);
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String expected= buf.toString();
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String message= "Content not as expected: Content is: \n" + actual + "\nExpected contents: \n" + expected;
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Assert.assertEquals(message, expected, actual);
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public static void assertExpectedExistInProposals(String[] actuals, String[] expecteds) {
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ArrayList<String> list1= new ArrayList<String>(Arrays.asList(actuals));
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ArrayList<String> list2= new ArrayList<String>(Arrays.asList(expecteds));
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for (int i= list1.size() - 1; i >= 0; i--) {
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if (list2.remove(list1.get(i))) {
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int n1= list1.size();
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int n2= list2.size();
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if (n1 == 1 && n2 == 1) {
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assertEqualString((String) list1.get(0), (String) list2.get(0));
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StringBuffer buf= new StringBuffer();
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for (int i= 0; i < n1; i++) {
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String s1= (String) list1.get(i);
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String actual= buf.toString();
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buf= new StringBuffer();
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for (int i= 0; i < n2; i++) {
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String s2= (String) list2.get(i);
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String expected= buf.toString();
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String message= "Content not as expected: Content is: \n" + actual + "\nExpected contents: \n" + expected;
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Assert.assertEquals(message, expected, actual);