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Use source and expected output files to test Simple Language, instead of individual JUnit tests with the source and expected output as strings
author Christian Wimmer <christian.wimmer@oracle.com>
date Fri, 24 Jan 2014 18:18:49 -0800
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children b5b64fe6963f
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e34d5cca7496 Use source and expected output files to test Simple Language, instead of individual JUnit tests with the source and expected output as strings
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.sl.test;
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24
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25 import java.io.*;
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26 import java.nio.file.*;
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27 import java.nio.file.attribute.*;
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28 import java.util.*;
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29
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30 import org.junit.*;
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31
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32 import com.oracle.truffle.api.*;
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33 import com.oracle.truffle.api.source.*;
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34 import com.oracle.truffle.sl.*;
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35 import com.oracle.truffle.sl.runtime.*;
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36
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37 public class SLTestRunner {
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38
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39 private static final int REPEATS = 10;
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40 private static final String TEST_DIR = "tests";
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41 private static final String INPUT_SUFFIX = ".sl";
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42 private static final String OUTPUT_SUFFIX = ".output";
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43
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44 static class TestCase {
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45 protected final String name;
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46 protected final Source input;
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47 protected final String expectedOutput;
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48 protected String actualOutput;
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49
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50 protected TestCase(String name, Source input, String expectedOutput) {
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51 this.name = name;
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52 this.input = input;
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53 this.expectedOutput = expectedOutput;
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54 }
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55 }
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56
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57 protected boolean useConsole = false;
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58
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59 protected final SourceManager sourceManager = new SourceManager();
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60 protected final List<TestCase> testCases = new ArrayList<>();
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61
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62 protected boolean runTests(String namePattern) throws IOException {
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63 Path testsRoot = FileSystems.getDefault().getPath(TEST_DIR);
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64
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65 Files.walkFileTree(testsRoot, new SimpleFileVisitor<Path>() {
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66 @Override
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67 public FileVisitResult visitFile(Path inputFile, BasicFileAttributes attrs) throws IOException {
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68 String name = inputFile.getFileName().toString();
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69 if (name.endsWith(INPUT_SUFFIX)) {
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70 name = name.substring(0, name.length() - INPUT_SUFFIX.length());
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71 Path outputFile = inputFile.resolveSibling(name + OUTPUT_SUFFIX);
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72 if (!Files.exists(outputFile)) {
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73 throw new Error("Output file does not exist: " + outputFile);
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74 }
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75
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76 testCases.add(new TestCase(name, sourceManager.get(inputFile.toString()), new String(Files.readAllBytes(outputFile))));
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77 }
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78 return FileVisitResult.CONTINUE;
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79 }
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80 });
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81
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82 if (testCases.size() == 0) {
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83 System.out.format("No test cases match filter %s", namePattern);
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84 return false;
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85 }
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86
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87 boolean success = true;
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88 for (TestCase testCase : testCases) {
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89 if (namePattern.length() == 0 || testCase.name.toLowerCase().contains(namePattern.toLowerCase())) {
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90 success = success & executeTest(testCase);
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91 }
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92 }
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93 return success;
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94 }
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95
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96 protected boolean executeTest(TestCase testCase) {
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97 System.out.format("Running %s\n", testCase.name);
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98
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99 ByteArrayOutputStream out = new ByteArrayOutputStream();
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100 PrintStream printer = new PrintStream(useConsole ? new SplitOutputStream(out, System.err) : out);
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101 PrintStream origErr = System.err;
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102 try {
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103 System.setErr(printer);
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104 SLContext context = new SLContext(sourceManager, printer);
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105 SLMain.run(context, testCase.input, null, REPEATS);
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106 } catch (Throwable ex) {
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107 ex.printStackTrace(printer);
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108 } finally {
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109 System.setErr(origErr);
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110 }
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111 testCase.actualOutput = new String(out.toByteArray());
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112
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113 if (testCase.actualOutput.equals(repeat(testCase.expectedOutput, REPEATS))) {
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114 System.out.format("OK %s\n", testCase.name);
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115 return true;
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116 } else {
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117 if (!useConsole) {
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118 System.out.format("== Expected ==\n%s\n", testCase.expectedOutput);
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119 System.out.format("== Actual ==\n%s\n", testCase.actualOutput);
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120 }
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121 System.out.format("FAILED %s\n", testCase.name);
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122 return false;
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123 }
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124 }
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125
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126 private static String repeat(String s, int count) {
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127 StringBuilder result = new StringBuilder(s.length() * count);
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128 for (int i = 0; i < count; i++) {
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129 result.append(s);
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130 }
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131 return result.toString();
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132 }
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133
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134 public static void main(String[] args) throws IOException {
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135 String namePattern = "";
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136 if (args.length > 0) {
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137 namePattern = args[0];
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138 }
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139 boolean success = new SLTestRunner().runTests(namePattern);
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140 if (!success) {
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141 System.exit(1);
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142 }
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143 }
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144
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145 @Test
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146 public void test() throws IOException {
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147 Assert.assertTrue(runTests(""));
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148 }
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149 }