1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.testutils;
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3 |
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4 | import java.io.File;
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5 | import java.io.IOException;
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6 | import java.text.MessageFormat;
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7 | import java.util.TimeZone;
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8 |
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9 | import org.junit.rules.TemporaryFolder;
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10 | import org.junit.rules.TestRule;
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11 | import org.junit.runner.Description;
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12 | import org.junit.runners.model.InitializationError;
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13 | import org.junit.runners.model.Statement;
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14 | import org.openstreetmap.josm.JOSMFixture;
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15 | import org.openstreetmap.josm.Main;
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16 | import org.openstreetmap.josm.data.projection.Projections;
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17 | import org.openstreetmap.josm.gui.util.GuiHelper;
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18 | import org.openstreetmap.josm.io.OsmApi;
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19 | import org.openstreetmap.josm.io.OsmApiInitializationException;
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20 | import org.openstreetmap.josm.io.OsmTransferCanceledException;
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21 | import org.openstreetmap.josm.tools.I18n;
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22 | import org.openstreetmap.josm.tools.Logging;
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23 | import org.openstreetmap.josm.tools.MemoryManagerTest;
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24 | import org.openstreetmap.josm.tools.date.DateUtils;
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25 |
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26 | import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
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27 |
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28 | /**
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29 | * This class runs a test in an environment that resembles the one used by the JOSM main application.
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30 | * <p>
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31 | * The environment is reset before every test. You can specify the components to which you need access using the methods of this class.
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32 | * For example, invoking {@link #preferences()} gives you access to the (default) preferences.
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33 | *
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34 | * @author Michael Zangl
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35 | */
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36 | public class JOSMTestRules implements TestRule {
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37 | private int timeout = 10 * 1000;
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38 | private TemporaryFolder josmHome;
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39 | private boolean usePreferences = false;
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40 | private APIType useAPI = APIType.NONE;
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41 | private String i18n = null;
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42 | private boolean platform;
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43 | private boolean useProjection;
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44 | private boolean commands;
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45 | private boolean allowMemoryManagerLeaks;
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46 |
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47 | /**
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48 | * Disable the default timeout for this test. Use with care.
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49 | * @return this instance, for easy chaining
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50 | */
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51 | public JOSMTestRules noTimeout() {
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52 | timeout = -1;
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53 | return this;
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54 | }
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55 |
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56 | /**
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57 | * Set a timeout for all tests in this class. Local method timeouts may only reduce this timeout.
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58 | * @param millis The timeout duration in milliseconds.
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59 | * @return this instance, for easy chaining
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60 | */
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61 | public JOSMTestRules timeout(int millis) {
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62 | timeout = millis;
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63 | return this;
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64 | }
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65 |
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66 | /**
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67 | * Enable the use of default preferences.
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68 | * @return this instance, for easy chaining
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69 | */
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70 | public JOSMTestRules preferences() {
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71 | josmHome();
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72 | usePreferences = true;
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73 | return this;
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74 | }
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75 |
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76 | /**
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77 | * Set JOSM home to a valid, empty directory.
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78 | * @return this instance, for easy chaining
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79 | */
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80 | private JOSMTestRules josmHome() {
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81 | josmHome = new TemporaryFolder();
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82 | return this;
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83 | }
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84 |
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85 | /**
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86 | * Enables the i18n module for this test in english.
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87 | * @return this instance, for easy chaining
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88 | */
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89 | public JOSMTestRules i18n() {
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90 | return i18n("en");
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91 | }
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92 |
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93 | /**
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94 | * Enables the i18n module for this test.
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95 | * @param language The language to use.
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96 | * @return this instance, for easy chaining
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97 | */
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98 | public JOSMTestRules i18n(String language) {
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99 | i18n = language;
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100 | return this;
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101 | }
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102 |
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103 | /**
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104 | * Enable {@link Main#platform} global variable.
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105 | * @return this instance, for easy chaining
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106 | */
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107 | public JOSMTestRules platform() {
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108 | platform = true;
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109 | return this;
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110 | }
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111 |
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112 | /**
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113 | * Enable the dev.openstreetmap.org API for this test.
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114 | * @return this instance, for easy chaining
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115 | */
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116 | public JOSMTestRules devAPI() {
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117 | preferences();
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118 | useAPI = APIType.DEV;
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119 | return this;
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120 | }
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121 |
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122 | /**
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123 | * Use the {@link FakeOsmApi} for testing.
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124 | * @return this instance, for easy chaining
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125 | */
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126 | public JOSMTestRules fakeAPI() {
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127 | useAPI = APIType.FAKE;
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128 | return this;
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129 | }
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130 |
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131 | /**
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132 | * Set up default projection (Mercator)
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133 | * @return this instance, for easy chaining
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134 | */
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135 | public JOSMTestRules projection() {
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136 | useProjection = true;
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137 | return this;
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138 | }
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139 |
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140 | /**
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141 | * Allow the execution of commands using {@link Main#undoRedo}
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142 | * @return this instance, for easy chaining
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143 | */
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144 | public JOSMTestRules commands() {
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145 | commands = true;
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146 | return this;
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147 | }
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148 |
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149 | /**
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150 | * Allow the memory manager to contain items after execution of the test cases.
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151 | * @return this instance, for easy chaining
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152 | */
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153 | public JOSMTestRules memoryManagerLeaks() {
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154 | allowMemoryManagerLeaks = true;
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155 | return this;
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156 | }
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157 |
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158 | @Override
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159 | public Statement apply(Statement base, Description description) {
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160 | Statement statement = base;
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161 | if (timeout > 0) {
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162 | // TODO: new DisableOnDebug(timeout)
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163 | statement = new FailOnTimeoutStatement(statement, timeout);
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164 | }
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165 | statement = new CreateJosmEnvironment(statement);
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166 | if (josmHome != null) {
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167 | statement = josmHome.apply(statement, description);
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168 | }
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169 | return statement;
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170 | }
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171 |
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172 | /**
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173 | * Set up before running a test
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174 | * @throws InitializationError If an error occured while creating the required environment.
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175 | */
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176 | protected void before() throws InitializationError {
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177 | // Tests are running headless by default.
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178 | System.setProperty("java.awt.headless", "true");
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179 |
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180 | cleanUpFromJosmFixture();
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181 |
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182 | // All tests use the same timezone.
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183 | TimeZone.setDefault(DateUtils.UTC);
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184 | // Set log level to info
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185 | Logging.setLogLevel(Logging.LEVEL_INFO);
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186 |
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187 | // Set up i18n
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188 | if (i18n != null) {
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189 | I18n.set(i18n);
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190 | }
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191 |
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192 | // Add JOSM home
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193 | if (josmHome != null) {
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194 | try {
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195 | File home = josmHome.newFolder();
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196 | System.setProperty("josm.home", home.getAbsolutePath());
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197 | } catch (IOException e) {
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198 | throw new InitializationError(e);
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199 | }
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200 | }
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201 |
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202 | // Add preferences
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203 | if (usePreferences) {
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204 | Main.pref.resetToInitialState();
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205 | Main.pref.enableSaveOnPut(false);
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206 | // No pref init -> that would only create the preferences file.
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207 | // We force the use of a wrong API server, just in case anyone attempts an upload
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208 | Main.pref.put("osm-server.url", "http://invalid");
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209 | }
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210 |
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211 | if (useProjection) {
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212 | Main.setProjection(Projections.getProjectionByCode("EPSG:3857")); // Mercator
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213 | }
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214 |
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215 | // Set API
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216 | if (useAPI == APIType.DEV) {
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217 | Main.pref.put("osm-server.url", "http://api06.dev.openstreetmap.org/api");
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218 | } else if (useAPI == APIType.FAKE) {
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219 | FakeOsmApi api = FakeOsmApi.getInstance();
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220 | Main.pref.put("osm-server.url", api.getServerUrl());
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221 | }
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222 |
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223 | // Initialize API
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224 | if (useAPI != APIType.NONE) {
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225 | try {
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226 | OsmApi.getOsmApi().initialize(null);
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227 | } catch (OsmTransferCanceledException | OsmApiInitializationException e) {
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228 | throw new InitializationError(e);
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229 | }
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230 | }
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231 |
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232 | // Set Platform
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233 | if (platform) {
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234 | Main.determinePlatformHook();
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235 | }
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236 |
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237 | if (commands) {
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238 | // TODO: Implement a more selective version of this once Main is restructured.
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239 | JOSMFixture.createUnitTestFixture().init(true);
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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 | * Clean up what test not using these test rules may have broken.
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245 | */
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246 | @SuppressFBWarnings("DM_GC")
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247 | private void cleanUpFromJosmFixture() {
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248 | MemoryManagerTest.resetState(true);
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249 | Main.getLayerManager().resetState();
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250 | Main.pref.resetToInitialState();
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251 | Main.platform = null;
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252 | System.gc();
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253 | }
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254 |
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255 | /**
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256 | * Clean up after running a test
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257 | */
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258 | @SuppressFBWarnings("DM_GC")
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259 | protected void after() {
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260 | // Sync AWT Thread
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261 | GuiHelper.runInEDTAndWait(new Runnable() {
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262 | @Override
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263 | public void run() {
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264 | }
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265 | });
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266 | // Remove all layers
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267 | Main.getLayerManager().resetState();
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268 | MemoryManagerTest.resetState(allowMemoryManagerLeaks);
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269 |
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270 | // TODO: Remove global listeners and other global state.
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271 | Main.pref.resetToInitialState();;
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272 | Main.platform = null;
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273 | // Parts of JOSM uses weak references - destroy them.
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274 | System.gc();
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275 | }
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276 |
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277 | private final class CreateJosmEnvironment extends Statement {
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278 | private final Statement base;
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279 |
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280 | private CreateJosmEnvironment(Statement base) {
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281 | this.base = base;
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282 | }
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283 |
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284 | @Override
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285 | public void evaluate() throws Throwable {
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286 | before();
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287 | try {
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288 | base.evaluate();
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289 | } finally {
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290 | after();
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291 | }
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292 | }
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293 | }
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294 |
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295 | enum APIType {
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296 | NONE, FAKE, DEV
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297 | }
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298 |
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299 | /**
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300 | * The junit timeout statement has problems when switchting timezones. This one does not.
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301 | * @author Michael Zangl
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302 | */
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303 | private static class FailOnTimeoutStatement extends Statement {
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304 |
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305 | private int timeout;
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306 | private Statement original;
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307 |
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308 | FailOnTimeoutStatement(Statement original, int timeout) {
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309 | this.original = original;
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310 | this.timeout = timeout;
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311 | }
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312 |
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313 | @Override
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314 | public void evaluate() throws Throwable {
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315 | TimeoutThread thread = new TimeoutThread(original);
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316 | thread.setDaemon(true);
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317 | thread.start();
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318 | thread.join(timeout);
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319 | thread.interrupt();
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320 | if (!thread.isDone) {
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321 | Throwable exception = thread.getExecutionException();
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322 | if (exception != null) {
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323 | throw exception;
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324 | } else {
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325 | throw new Exception(MessageFormat.format("Test timed out after {0}ms", timeout));
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326 | }
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327 | }
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328 | }
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329 | }
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330 |
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331 | private static final class TimeoutThread extends Thread {
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332 | public boolean isDone;
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333 | private Statement original;
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334 | private Throwable exceptionCaught;
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335 |
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336 | private TimeoutThread(Statement original) {
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337 | super("Timeout runner");
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338 | this.original = original;
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339 | }
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340 |
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341 | public Throwable getExecutionException() {
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342 | return exceptionCaught;
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343 | }
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344 |
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345 | @Override
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346 | public void run() {
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347 | try {
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348 | original.evaluate();
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349 | isDone = true;
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350 | } catch (Throwable e) {
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351 | exceptionCaught = e;
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352 | }
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353 | }
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354 | }
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355 | }
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