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annotate truffle/com.oracle.truffle.sl.test/src/com/oracle/truffle/sl/test/instrument/SLInstrumentTestRunner.java @ 22024:216e0683bbf1

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made SLInstrumentTestRunner (maybe) find test classes when Truffle is not the primary suite
author Doug Simon <doug.simon@oracle.com>
date Tue, 21 Jul 2015 16:06:31 +0200
parents 9c8c0937da41
children 854e52a0869c
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1 /*
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2 * Copyright (c) 2014, 2015, 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.instrument;
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24
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25 import java.io.*;
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26 import java.nio.charset.*;
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27 import java.nio.file.*;
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28 import java.nio.file.attribute.*;
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29 import java.util.*;
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30
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31 import org.junit.*;
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32 import org.junit.internal.*;
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33 import org.junit.runner.*;
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34 import org.junit.runner.manipulation.*;
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35 import org.junit.runner.notification.*;
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36 import org.junit.runners.*;
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37 import org.junit.runners.model.*;
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38
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39 import com.oracle.truffle.api.instrument.*;
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40 import com.oracle.truffle.api.instrument.impl.*;
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41 import com.oracle.truffle.api.source.*;
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42 import com.oracle.truffle.sl.factory.*;
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43 import com.oracle.truffle.sl.nodes.instrument.*;
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44 import com.oracle.truffle.sl.nodes.local.*;
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45 import com.oracle.truffle.sl.parser.*;
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46 import com.oracle.truffle.sl.runtime.*;
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47 import com.oracle.truffle.sl.test.*;
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48 import com.oracle.truffle.sl.test.instrument.SLInstrumentTestRunner.InstrumentTestCase;
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49
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50 /**
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51 * This class builds and executes the tests for instrumenting SL. Although much of this class is
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52 * written with future automation in mind, at the moment the tests that are created are hard-coded
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53 * according to the file name of the test. To be automated, an automatic way of generating both the
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54 * node visitor and the node prober is necessary.
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55 *
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56 * Testing is done via JUnit via comparing execution outputs with expected outputs.
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57 */
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58 public final class SLInstrumentTestRunner extends ParentRunner<InstrumentTestCase> {
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59
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60 private static final String SOURCE_SUFFIX = ".sl";
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61 private static final String INPUT_SUFFIX = ".input";
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62 private static final String OUTPUT_SUFFIX = ".output";
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63 private static final String ASSIGNMENT_VALUE_SUFFIX = "_assnCount";
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64
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65 private static final String LF = System.getProperty("line.separator");
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66 private static SLContext slContext;
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67
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68 static class InstrumentTestCase {
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69 protected final Description name;
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70 protected final Path path;
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71 protected final String baseName;
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72 protected final String sourceName;
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73 protected final String testInput;
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74 protected final String expectedOutput;
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75 protected String actualOutput;
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76
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77 protected InstrumentTestCase(Class<?> testClass, String baseName, String sourceName, Path path, String testInput, String expectedOutput) {
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78 this.name = Description.createTestDescription(testClass, baseName);
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79 this.baseName = baseName;
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80 this.sourceName = sourceName;
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81 this.path = path;
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82 this.testInput = testInput;
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83 this.expectedOutput = expectedOutput;
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84 }
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85 }
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86
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87 private final List<InstrumentTestCase> testCases;
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88
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89 public SLInstrumentTestRunner(Class<?> testClass) throws InitializationError {
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90 super(testClass);
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91 final SLStandardASTProber prober = new SLStandardASTProber();
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92 Probe.registerASTProber(prober);
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93 try {
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94 testCases = createTests(testClass);
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95 } catch (IOException e) {
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96 throw new InitializationError(e);
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97 } finally {
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98 Probe.unregisterASTProber(prober);
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99 }
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100 }
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101
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102 @Override
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103 protected List<InstrumentTestCase> getChildren() {
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104 return testCases;
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105 }
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106
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107 @Override
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108 protected Description describeChild(InstrumentTestCase child) {
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109 return child.name;
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110 }
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111
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112 /**
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113 * Tests are created based on the files that exist in the directory specified in the passed in
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114 * annotation. Each test must have a source file and an expected output file. Optionally, each
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115 * test can also include an input file. Source files have an ".sl" extension. Expected output
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116 * have a ".output" extension. Input files have an ".input" extension. All these files must
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117 * share the same base name to be correctly grouped. For example: "test1_assnCount.sl",
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118 * "test1_assnCount.output" and "test1_assnCount.input" would all be used to create a single
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119 * test called "test1_assnCount".
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120 *
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121 * This method iterates over the files in the directory and creates a new InstrumentTestCase for
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122 * each group of related files. Each file is also expected to end with an identified at the end
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123 * of the base name to indicate what visitor needs to be attached. Currently, visitors are hard
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124 * coded to work on specific lines, so the code here is not currently generalizable.
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125 *
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126 * @param c The annotation containing the directory with tests
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127 * @return A list of {@link InstrumentTestCase}s to run.
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128 * @throws IOException If the directory is invalid.
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129 * @throws InitializationError If no directory is provided.
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130 *
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131 * @see #runChild(InstrumentTestCase, RunNotifier)
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132 */
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133 protected static List<InstrumentTestCase> createTests(final Class<?> c) throws IOException, InitializationError {
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134 SLInstrumentTestSuite suite = c.getAnnotation(SLInstrumentTestSuite.class);
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135 if (suite == null) {
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136 throw new InitializationError(String.format("@%s annotation required on class '%s' to run with '%s'.", SLInstrumentTestSuite.class.getSimpleName(), c.getName(),
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137 SLInstrumentTestRunner.class.getSimpleName()));
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138 }
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139
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140 String[] paths = suite.value();
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141
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142 Path root = SLTestRunner.getRootViaResourceURL(c, paths);
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143 if (root == null) {
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144 for (String path : paths) {
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145 root = FileSystems.getDefault().getPath(path);
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146 if (Files.exists(root)) {
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147 break;
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148 }
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149 }
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150 }
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151 if (root == null && paths.length > 0) {
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152 throw new FileNotFoundException(paths[0]);
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153 }
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154
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155 final Path rootPath = root;
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156
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157 final List<InstrumentTestCase> testCases = new ArrayList<>();
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158
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159 // Scaffolding in place for future automation
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160 Files.walkFileTree(rootPath, new SimpleFileVisitor<Path>() {
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161 @Override
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162 public FileVisitResult visitFile(Path sourceFile, BasicFileAttributes attrs) throws IOException {
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163 String sourceName = sourceFile.getFileName().toString();
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164 if (sourceName.endsWith(SOURCE_SUFFIX)) {
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165 String baseName = sourceName.substring(0, sourceName.length() - SOURCE_SUFFIX.length());
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166
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167 Path inputFile = sourceFile.resolveSibling(baseName + INPUT_SUFFIX);
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168 String testInput = "";
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169 if (Files.exists(inputFile)) {
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170 testInput = readAllLines(inputFile);
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171 }
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172
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173 Path outputFile = sourceFile.resolveSibling(baseName + OUTPUT_SUFFIX);
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174 String expectedOutput = "";
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175 if (Files.exists(outputFile)) {
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176 expectedOutput = readAllLines(outputFile);
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177 }
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178
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179 testCases.add(new InstrumentTestCase(c, baseName, sourceName, sourceFile, testInput, expectedOutput));
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180
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181 }
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182 return FileVisitResult.CONTINUE;
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183 }
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184 });
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185
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186 return testCases;
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187 }
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188
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189 private static String readAllLines(Path file) throws IOException {
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190 // fix line feeds for non unix os
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191 StringBuilder outFile = new StringBuilder();
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192 for (String line : Files.readAllLines(file, Charset.defaultCharset())) {
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193 outFile.append(line).append(LF);
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194 }
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195 return outFile.toString();
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196 }
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197
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198 /**
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199 * Executes the passed in test case. Instrumentation is added according to the name of the file
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200 * as explained in {@link #createTests(Class)}. Note that this code is not generalizable.
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201 */
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202 @Override
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203 protected void runChild(InstrumentTestCase testCase, RunNotifier notifier) {
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204 // TODO Current tests are hard-coded, automate this eventually
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205 notifier.fireTestStarted(testCase.name);
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206
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207 ByteArrayOutputStream out = new ByteArrayOutputStream();
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208 PrintWriter printer = new PrintWriter(out);
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209 final ASTProber prober = new SLStandardASTProber();
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210 Probe.registerASTProber(prober);
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211 try {
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212 // We use the name of the file to determine what visitor to attach to it.
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213 if (testCase.baseName.endsWith(ASSIGNMENT_VALUE_SUFFIX)) {
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214 // Set up the execution context for Simple and register our two listeners
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215 slContext = SLContextFactory.create(new BufferedReader(new StringReader(testCase.testInput)), printer);
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216
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217 final Source source = Source.fromText(readAllLines(testCase.path), testCase.sourceName);
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218 Parser.parseSL(slContext, source);
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219
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220 // Attach an instrument to every probe tagged as an assignment
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221 for (Probe probe : Probe.findProbesTaggedAs(StandardSyntaxTag.ASSIGNMENT)) {
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222 SLPrintAssigmentValueListener slPrintAssigmentValueListener = new SLPrintAssigmentValueListener(printer);
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223 probe.attach(Instrument.create(slPrintAssigmentValueListener, "SL print assignment value"));
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224 }
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225
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226 SLFunction main = slContext.getFunctionRegistry().lookup("main");
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227 main.getCallTarget().call();
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228 } else {
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229 notifier.fireTestFailure(new Failure(testCase.name, new UnsupportedOperationException("No instrumentation found.")));
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230 }
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231
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232 printer.flush();
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233 String actualOutput = new String(out.toByteArray());
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234 Assert.assertEquals(testCase.expectedOutput, actualOutput);
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235 } catch (Throwable ex) {
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236 notifier.fireTestFailure(new Failure(testCase.name, ex));
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237 } finally {
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238 Probe.unregisterASTProber(prober);
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239 notifier.fireTestFinished(testCase.name);
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240 }
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241
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242 }
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243
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244 public static void runInMain(Class<?> testClass, String[] args) throws InitializationError, NoTestsRemainException {
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245 JUnitCore core = new JUnitCore();
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246 core.addListener(new TextListener(System.out));
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247 SLInstrumentTestRunner suite = new SLInstrumentTestRunner(testClass);
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248 if (args.length > 0) {
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249 suite.filter(new NameFilter(args[0]));
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250 }
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251 Result r = core.run(suite);
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252 if (!r.wasSuccessful()) {
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253 System.exit(1);
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254 }
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255 }
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256
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257 private static final class NameFilter extends Filter {
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258 private final String pattern;
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259
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260 private NameFilter(String pattern) {
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261 this.pattern = pattern.toLowerCase();
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262 }
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263
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264 @Override
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265 public boolean shouldRun(Description description) {
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266 return description.getMethodName().toLowerCase().contains(pattern);
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267 }
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268
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269 @Override
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270 public String describe() {
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271 return "Filter contains " + pattern;
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272 }
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273 }
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274
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275 /**
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276 * This sample listener provides prints the value of an assignment (after the assignment is
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277 * complete) to the {@link PrintWriter} specified in the constructor. This listener can only be
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907128d02b31 Truffle/Instrumentation: For clients of Instrumentation, replace the TruffleEventListener interface with two: InstrumentListener, and ASTInstrumentListener. The former is simple, completely Truffle-safe (can't affect Truffle execution), and designed for simple tools. The latter is similar to the previous interface.
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278 * attached at {@link SLWriteLocalVariableNode}, but provides no guards to protect it from being
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279 * attached elsewhere.
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280 */
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281 public final class SLPrintAssigmentValueListener extends DefaultSimpleInstrumentListener {
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282
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283 private PrintWriter output;
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284
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285 public SLPrintAssigmentValueListener(PrintWriter output) {
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286 this.output = output;
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287 }
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288
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289 @Override
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290 public void returnValue(Probe probe, Object result) {
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291 output.println(result);
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292 }
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293 }
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294
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295 }