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annotate graal/com.oracle.truffle.sl.test/src/com/oracle/truffle/sl/test/instrument/SLInstrumentTestRunner.java @ 20889:73b1844b5b14

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Truffle/Instrumentation: rename InstrumentListener to SimpleInstrumentListener
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Fri, 10 Apr 2015 21:00:26 -0700
parents 907128d02b31
children 286aef83a9a7
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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.instrument.SLInstrumentTestRunner.InstrumentTestCase;
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48
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49 /**
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50 * This class builds and executes the tests for instrumenting SL. Although much of this class is
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51 * written with future automation in mind, at the moment the tests that are created are hard-coded
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52 * according to the file name of the test. To be automated, an automatic way of generating both the
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53 * node visitor and the node prober is necessary.
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54 *
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55 * Testing is done via JUnit via comparing execution outputs with expected outputs.
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56 */
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57 public final class SLInstrumentTestRunner extends ParentRunner<InstrumentTestCase> {
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58
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59 private static final String SOURCE_SUFFIX = ".sl";
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60 private static final String INPUT_SUFFIX = ".input";
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61 private static final String OUTPUT_SUFFIX = ".output";
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62 private static final String ASSIGNMENT_VALUE_SUFFIX = "_assnCount";
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63
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64 private static final String LF = System.getProperty("line.separator");
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65 private static SLContext slContext;
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66
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67 static class InstrumentTestCase {
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68 protected final Description name;
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69 protected final Path path;
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70 protected final String baseName;
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71 protected final String sourceName;
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72 protected final String testInput;
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73 protected final String expectedOutput;
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74 protected String actualOutput;
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75
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76 protected InstrumentTestCase(Class<?> testClass, String baseName, String sourceName, Path path, String testInput, String expectedOutput) {
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77 this.name = Description.createTestDescription(testClass, baseName);
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78 this.baseName = baseName;
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79 this.sourceName = sourceName;
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80 this.path = path;
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81 this.testInput = testInput;
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82 this.expectedOutput = expectedOutput;
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83 }
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84 }
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85
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86 private final List<InstrumentTestCase> testCases;
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87
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88 public SLInstrumentTestRunner(Class<?> testClass) throws InitializationError {
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89 super(testClass);
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90 final SLStandardASTProber prober = new SLStandardASTProber();
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91 Probe.registerASTProber(prober);
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92 try {
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93 testCases = createTests(testClass);
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94 } catch (IOException e) {
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95 throw new InitializationError(e);
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96 } finally {
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97 Probe.unregisterASTProber(prober);
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98 }
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99 }
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100
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101 @Override
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102 protected List<InstrumentTestCase> getChildren() {
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103 return testCases;
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104 }
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105
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106 @Override
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107 protected Description describeChild(InstrumentTestCase child) {
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108 return child.name;
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109 }
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110
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111 /**
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112 * Tests are created based on the files that exist in the directory specified in the passed in
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113 * annotation. Each test must have a source file and an expected output file. Optionally, each
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114 * test can also include an input file. Source files have an ".sl" extension. Expected output
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115 * have a ".output" extension. Input files have an ".input" extension. All these files must
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116 * share the same base name to be correctly grouped. For example: "test1_assnCount.sl",
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117 * "test1_assnCount.output" and "test1_assnCount.input" would all be used to create a single
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118 * test called "test1_assnCount".
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119 *
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120 * This method iterates over the files in the directory and creates a new InstrumentTestCase for
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121 * each group of related files. Each file is also expected to end with an identified at the end
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122 * of the base name to indicate what visitor needs to be attached. Currently, visitors are hard
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123 * coded to work on specific lines, so the code here is not currently generalizable.
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124 *
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125 * @param c The annotation containing the directory with tests
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126 * @return A list of {@link InstrumentTestCase}s to run.
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127 * @throws IOException If the directory is invalid.
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128 * @throws InitializationError If no directory is provided.
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129 *
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130 * @see #runChild(InstrumentTestCase, RunNotifier)
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131 */
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132 protected static List<InstrumentTestCase> createTests(final Class<?> c) throws IOException, InitializationError {
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133 SLInstrumentTestSuite suite = c.getAnnotation(SLInstrumentTestSuite.class);
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134 if (suite == null) {
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135 throw new InitializationError(String.format("@%s annotation required on class '%s' to run with '%s'.", SLInstrumentTestSuite.class.getSimpleName(), c.getName(),
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136 SLInstrumentTestRunner.class.getSimpleName()));
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137 }
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138
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139 String[] paths = suite.value();
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140
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141 Path root = null;
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142 for (String path : paths) {
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143 root = FileSystems.getDefault().getPath(path);
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144 if (Files.exists(root)) {
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145 break;
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146 }
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147 }
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148 if (root == null && paths.length > 0) {
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149 throw new FileNotFoundException(paths[0]);
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150 }
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151
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152 final Path rootPath = root;
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153
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154 final List<InstrumentTestCase> testCases = new ArrayList<>();
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155
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156 // Scaffolding in place for future automation
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157 Files.walkFileTree(rootPath, new SimpleFileVisitor<Path>() {
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158 @Override
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159 public FileVisitResult visitFile(Path sourceFile, BasicFileAttributes attrs) throws IOException {
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160 String sourceName = sourceFile.getFileName().toString();
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161 if (sourceName.endsWith(SOURCE_SUFFIX)) {
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162 String baseName = sourceName.substring(0, sourceName.length() - SOURCE_SUFFIX.length());
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163
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164 Path inputFile = sourceFile.resolveSibling(baseName + INPUT_SUFFIX);
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165 String testInput = "";
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166 if (Files.exists(inputFile)) {
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167 testInput = readAllLines(inputFile);
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168 }
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169
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170 Path outputFile = sourceFile.resolveSibling(baseName + OUTPUT_SUFFIX);
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171 String expectedOutput = "";
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172 if (Files.exists(outputFile)) {
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173 expectedOutput = readAllLines(outputFile);
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174 }
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175
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176 testCases.add(new InstrumentTestCase(c, baseName, sourceName, sourceFile, testInput, expectedOutput));
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177
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178 }
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179 return FileVisitResult.CONTINUE;
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180 }
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181 });
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182
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183 return testCases;
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184 }
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185
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186 private static String readAllLines(Path file) throws IOException {
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187 // fix line feeds for non unix os
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188 StringBuilder outFile = new StringBuilder();
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189 for (String line : Files.readAllLines(file, Charset.defaultCharset())) {
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190 outFile.append(line).append(LF);
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191 }
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192 return outFile.toString();
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193 }
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194
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195 /**
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196 * Executes the passed in test case. Instrumentation is added according to the name of the file
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197 * as explained in {@link #createTests(Class)}. Note that this code is not generalizable.
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198 */
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199 @Override
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200 protected void runChild(InstrumentTestCase testCase, RunNotifier notifier) {
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201 // TODO Current tests are hard-coded, automate this eventually
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202 notifier.fireTestStarted(testCase.name);
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203
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204 ByteArrayOutputStream out = new ByteArrayOutputStream();
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205 PrintStream printer = new PrintStream(out);
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206 final ASTProber prober = new SLStandardASTProber();
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207 Probe.registerASTProber(prober);
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208 try {
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209 // We use the name of the file to determine what visitor to attach to it.
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210 if (testCase.baseName.endsWith(ASSIGNMENT_VALUE_SUFFIX)) {
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211 // Set up the execution context for Simple and register our two listeners
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212 slContext = SLContextFactory.create(new BufferedReader(new StringReader(testCase.testInput)), printer);
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213
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214 final Source source = Source.fromText(readAllLines(testCase.path), testCase.sourceName);
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215 Parser.parseSL(slContext, source);
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216
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217 // Attach an instrument to every probe tagged as an assignment
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218 for (Probe probe : Probe.findProbesTaggedAs(StandardSyntaxTag.ASSIGNMENT)) {
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219 SLPrintAssigmentValueListener slPrintAssigmentValueListener = new SLPrintAssigmentValueListener(printer);
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220 probe.attach(Instrument.create(slPrintAssigmentValueListener, "SL print assignment value"));
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221 }
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222
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223 SLFunction main = slContext.getFunctionRegistry().lookup("main");
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224 main.getCallTarget().call();
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225 } else {
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226 notifier.fireTestFailure(new Failure(testCase.name, new UnsupportedOperationException("No instrumentation found.")));
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227 }
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228
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229 String actualOutput = new String(out.toByteArray());
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230 Assert.assertEquals(testCase.expectedOutput, actualOutput);
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231 } catch (Throwable ex) {
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232 notifier.fireTestFailure(new Failure(testCase.name, ex));
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233 } finally {
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234 Probe.unregisterASTProber(prober);
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235 notifier.fireTestFinished(testCase.name);
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236 }
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237
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238 }
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239
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240 public static void runInMain(Class<?> testClass, String[] args) throws InitializationError, NoTestsRemainException {
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241 JUnitCore core = new JUnitCore();
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242 core.addListener(new TextListener(System.out));
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243 SLInstrumentTestRunner suite = new SLInstrumentTestRunner(testClass);
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244 if (args.length > 0) {
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245 suite.filter(new NameFilter(args[0]));
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246 }
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247 Result r = core.run(suite);
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248 if (!r.wasSuccessful()) {
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249 System.exit(1);
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250 }
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251 }
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252
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253 private static final class NameFilter extends Filter {
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254 private final String pattern;
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255
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256 private NameFilter(String pattern) {
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257 this.pattern = pattern.toLowerCase();
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258 }
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259
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260 @Override
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261 public boolean shouldRun(Description description) {
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262 return description.getMethodName().toLowerCase().contains(pattern);
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263 }
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264
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265 @Override
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266 public String describe() {
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267 return "Filter contains " + pattern;
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268 }
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269 }
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270
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271 /**
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272 * This sample listener provides prints the value of an assignment (after the assignment is
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273 * complete) to the {@link PrintStream} specified in the constructor. This listener can only be
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274 * attached at {@link SLWriteLocalVariableNode}, but provides no guards to protect it from being
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275 * attached elsewhere.
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276 */
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277 public final class SLPrintAssigmentValueListener extends DefaultSimpleInstrumentListener {
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279 private PrintStream output;
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280
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281 public SLPrintAssigmentValueListener(PrintStream output) {
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282 this.output = output;
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283 }
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285 @Override
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286 public void returnValue(Probe probe, Object result) {
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287 output.println(result);
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288 }
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289 }
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290
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291 }