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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/memory/scoped_ptr.h" | |
| 6 #include "chrome/test/base/module_system_test.h" | |
| 7 #include "extensions/renderer/module_system.h" | |
| 8 #include "gin/modules/module_registry.h" | |
| 9 | |
| 10 // TODO(cduvall/kalman): Put this file in extensions namespace. | |
| 11 using extensions::ModuleSystem; | |
| 12 using extensions::NativeHandler; | |
| 13 using extensions::ObjectBackedNativeHandler; | |
| 14 | |
| 15 class CounterNatives : public ObjectBackedNativeHandler { | |
| 16 public: | |
| 17 explicit CounterNatives(extensions::ChromeV8Context* context) | |
| 18 : ObjectBackedNativeHandler(context), counter_(0) { | |
| 19 RouteFunction("Get", base::Bind(&CounterNatives::Get, | |
| 20 base::Unretained(this))); | |
| 21 RouteFunction("Increment", base::Bind(&CounterNatives::Increment, | |
| 22 base::Unretained(this))); | |
| 23 } | |
| 24 | |
| 25 void Get(const v8::FunctionCallbackInfo<v8::Value>& args) { | |
| 26 args.GetReturnValue().Set(static_cast<int32_t>(counter_)); | |
| 27 } | |
| 28 | |
| 29 void Increment(const v8::FunctionCallbackInfo<v8::Value>& args) { | |
| 30 counter_++; | |
| 31 } | |
| 32 | |
| 33 private: | |
| 34 int counter_; | |
| 35 }; | |
| 36 | |
| 37 class TestExceptionHandler : public ModuleSystem::ExceptionHandler { | |
| 38 public: | |
| 39 TestExceptionHandler() | |
| 40 : handled_exception_(false) { | |
| 41 } | |
| 42 | |
| 43 virtual void HandleUncaughtException(const v8::TryCatch& try_catch) OVERRIDE { | |
| 44 handled_exception_ = true; | |
| 45 } | |
| 46 | |
| 47 bool handled_exception() const { return handled_exception_; } | |
| 48 | |
| 49 private: | |
| 50 bool handled_exception_; | |
| 51 }; | |
| 52 | |
| 53 TEST_F(ModuleSystemTest, TestExceptionHandling) { | |
| 54 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 55 env()->module_system()); | |
| 56 TestExceptionHandler* handler = new TestExceptionHandler; | |
| 57 scoped_ptr<ModuleSystem::ExceptionHandler> scoped_handler(handler); | |
| 58 ASSERT_FALSE(handler->handled_exception()); | |
| 59 env()->module_system()->SetExceptionHandlerForTest(scoped_handler.Pass()); | |
| 60 | |
| 61 env()->RegisterModule("test", "throw 'hi';"); | |
| 62 env()->module_system()->Require("test"); | |
| 63 ASSERT_TRUE(handler->handled_exception()); | |
| 64 | |
| 65 ExpectNoAssertionsMade(); | |
| 66 } | |
| 67 | |
| 68 TEST_F(ModuleSystemTest, TestRequire) { | |
| 69 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 70 env()->module_system()); | |
| 71 env()->RegisterModule("add", | |
| 72 "exports.Add = function(x, y) { return x + y; };"); | |
| 73 env()->RegisterModule("test", | |
| 74 "var Add = require('add').Add;" | |
| 75 "requireNative('assert').AssertTrue(Add(3, 5) == 8);"); | |
| 76 env()->module_system()->Require("test"); | |
| 77 } | |
| 78 | |
| 79 TEST_F(ModuleSystemTest, TestNestedRequire) { | |
| 80 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 81 env()->module_system()); | |
| 82 env()->RegisterModule("add", | |
| 83 "exports.Add = function(x, y) { return x + y; };"); | |
| 84 env()->RegisterModule("double", | |
| 85 "var Add = require('add').Add;" | |
| 86 "exports.Double = function(x) { return Add(x, x); };"); | |
| 87 env()->RegisterModule("test", | |
| 88 "var Double = require('double').Double;" | |
| 89 "requireNative('assert').AssertTrue(Double(3) == 6);"); | |
| 90 env()->module_system()->Require("test"); | |
| 91 } | |
| 92 | |
| 93 TEST_F(ModuleSystemTest, TestModuleInsulation) { | |
| 94 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 95 env()->module_system()); | |
| 96 env()->RegisterModule("x", | |
| 97 "var x = 10;" | |
| 98 "exports.X = function() { return x; };"); | |
| 99 env()->RegisterModule("y", | |
| 100 "var x = 15;" | |
| 101 "require('x');" | |
| 102 "exports.Y = function() { return x; };"); | |
| 103 env()->RegisterModule("test", | |
| 104 "var Y = require('y').Y;" | |
| 105 "var X = require('x').X;" | |
| 106 "var assert = requireNative('assert');" | |
| 107 "assert.AssertTrue(!this.hasOwnProperty('x'));" | |
| 108 "assert.AssertTrue(Y() == 15);" | |
| 109 "assert.AssertTrue(X() == 10);"); | |
| 110 env()->module_system()->Require("test"); | |
| 111 } | |
| 112 | |
| 113 TEST_F(ModuleSystemTest, TestNativesAreDisabledOutsideANativesEnabledScope) { | |
| 114 env()->RegisterModule("test", | |
| 115 "var assert;" | |
| 116 "try {" | |
| 117 " assert = requireNative('assert');" | |
| 118 "} catch (e) {" | |
| 119 " var caught = true;" | |
| 120 "}" | |
| 121 "if (assert) {" | |
| 122 " assert.AssertTrue(true);" | |
| 123 "}"); | |
| 124 env()->module_system()->Require("test"); | |
| 125 ExpectNoAssertionsMade(); | |
| 126 } | |
| 127 | |
| 128 TEST_F(ModuleSystemTest, TestNativesAreEnabledWithinANativesEnabledScope) { | |
| 129 env()->RegisterModule("test", | |
| 130 "var assert = requireNative('assert');" | |
| 131 "assert.AssertTrue(true);"); | |
| 132 | |
| 133 { | |
| 134 ModuleSystem::NativesEnabledScope natives_enabled(env()->module_system()); | |
| 135 { | |
| 136 ModuleSystem::NativesEnabledScope natives_enabled_inner( | |
| 137 env()->module_system()); | |
| 138 } | |
| 139 env()->module_system()->Require("test"); | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 TEST_F(ModuleSystemTest, TestLazyField) { | |
| 144 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 145 env()->module_system()); | |
| 146 env()->RegisterModule("lazy", "exports.x = 5;"); | |
| 147 | |
| 148 v8::Handle<v8::Object> object = env()->CreateGlobal("object"); | |
| 149 | |
| 150 env()->module_system()->SetLazyField(object, "blah", "lazy", "x"); | |
| 151 | |
| 152 env()->RegisterModule("test", | |
| 153 "var assert = requireNative('assert');" | |
| 154 "assert.AssertTrue(object.blah == 5);"); | |
| 155 env()->module_system()->Require("test"); | |
| 156 } | |
| 157 | |
| 158 TEST_F(ModuleSystemTest, TestLazyFieldYieldingObject) { | |
| 159 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 160 env()->module_system()); | |
| 161 env()->RegisterModule( | |
| 162 "lazy", | |
| 163 "var object = {};" | |
| 164 "object.__defineGetter__('z', function() { return 1; });" | |
| 165 "object.x = 5;" | |
| 166 "object.y = function() { return 10; };" | |
| 167 "exports.object = object;"); | |
| 168 | |
| 169 v8::Handle<v8::Object> object = env()->CreateGlobal("object"); | |
| 170 | |
| 171 env()->module_system()->SetLazyField(object, "thing", "lazy", "object"); | |
| 172 | |
| 173 env()->RegisterModule("test", | |
| 174 "var assert = requireNative('assert');" | |
| 175 "assert.AssertTrue(object.thing.x == 5);" | |
| 176 "assert.AssertTrue(object.thing.y() == 10);" | |
| 177 "assert.AssertTrue(object.thing.z == 1);"); | |
| 178 env()->module_system()->Require("test"); | |
| 179 } | |
| 180 | |
| 181 TEST_F(ModuleSystemTest, TestLazyFieldIsOnlyEvaledOnce) { | |
| 182 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 183 env()->module_system()); | |
| 184 env()->module_system()->RegisterNativeHandler( | |
| 185 "counter", | |
| 186 scoped_ptr<NativeHandler>(new CounterNatives(env()->context()))); | |
| 187 env()->RegisterModule("lazy", | |
| 188 "requireNative('counter').Increment();" | |
| 189 "exports.x = 5;"); | |
| 190 | |
| 191 v8::Handle<v8::Object> object = env()->CreateGlobal("object"); | |
| 192 | |
| 193 env()->module_system()->SetLazyField(object, "x", "lazy", "x"); | |
| 194 | |
| 195 env()->RegisterModule("test", | |
| 196 "var assert = requireNative('assert');" | |
| 197 "var counter = requireNative('counter');" | |
| 198 "assert.AssertTrue(counter.Get() == 0);" | |
| 199 "object.x;" | |
| 200 "assert.AssertTrue(counter.Get() == 1);" | |
| 201 "object.x;" | |
| 202 "assert.AssertTrue(counter.Get() == 1);"); | |
| 203 env()->module_system()->Require("test"); | |
| 204 } | |
| 205 | |
| 206 TEST_F(ModuleSystemTest, TestRequireNativesAfterLazyEvaluation) { | |
| 207 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 208 env()->module_system()); | |
| 209 env()->RegisterModule("lazy", "exports.x = 5;"); | |
| 210 v8::Handle<v8::Object> object = env()->CreateGlobal("object"); | |
| 211 | |
| 212 env()->module_system()->SetLazyField(object, "x", "lazy", "x"); | |
| 213 env()->RegisterModule("test", | |
| 214 "object.x;" | |
| 215 "requireNative('assert').AssertTrue(true);"); | |
| 216 env()->module_system()->Require("test"); | |
| 217 } | |
| 218 | |
| 219 TEST_F(ModuleSystemTest, TestTransitiveRequire) { | |
| 220 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 221 env()->module_system()); | |
| 222 env()->RegisterModule("dependency", "exports.x = 5;"); | |
| 223 env()->RegisterModule("lazy", "exports.output = require('dependency');"); | |
| 224 | |
| 225 v8::Handle<v8::Object> object = env()->CreateGlobal("object"); | |
| 226 | |
| 227 env()->module_system()->SetLazyField(object, "thing", "lazy", "output"); | |
| 228 | |
| 229 env()->RegisterModule("test", | |
| 230 "var assert = requireNative('assert');" | |
| 231 "assert.AssertTrue(object.thing.x == 5);"); | |
| 232 env()->module_system()->Require("test"); | |
| 233 } | |
| 234 | |
| 235 TEST_F(ModuleSystemTest, TestModulesOnlyGetEvaledOnce) { | |
| 236 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 237 env()->module_system()); | |
| 238 env()->module_system()->RegisterNativeHandler( | |
| 239 "counter", | |
| 240 scoped_ptr<NativeHandler>(new CounterNatives(env()->context()))); | |
| 241 | |
| 242 env()->RegisterModule("incrementsWhenEvaled", | |
| 243 "requireNative('counter').Increment();"); | |
| 244 env()->RegisterModule("test", | |
| 245 "var assert = requireNative('assert');" | |
| 246 "var counter = requireNative('counter');" | |
| 247 "assert.AssertTrue(counter.Get() == 0);" | |
| 248 "require('incrementsWhenEvaled');" | |
| 249 "assert.AssertTrue(counter.Get() == 1);" | |
| 250 "require('incrementsWhenEvaled');" | |
| 251 "assert.AssertTrue(counter.Get() == 1);"); | |
| 252 | |
| 253 env()->module_system()->Require("test"); | |
| 254 } | |
| 255 | |
| 256 TEST_F(ModuleSystemTest, TestOverrideNativeHandler) { | |
| 257 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 258 env()->module_system()); | |
| 259 env()->OverrideNativeHandler("assert", "exports.AssertTrue = function() {};"); | |
| 260 env()->RegisterModule("test", "requireNative('assert').AssertTrue(true);"); | |
| 261 ExpectNoAssertionsMade(); | |
| 262 env()->module_system()->Require("test"); | |
| 263 } | |
| 264 | |
| 265 TEST_F(ModuleSystemTest, TestOverrideNonExistentNativeHandler) { | |
| 266 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 267 env()->module_system()); | |
| 268 env()->OverrideNativeHandler("thing", "exports.x = 5;"); | |
| 269 env()->RegisterModule("test", | |
| 270 "var assert = requireNative('assert');" | |
| 271 "assert.AssertTrue(requireNative('thing').x == 5);"); | |
| 272 env()->module_system()->Require("test"); | |
| 273 } | |
| 274 | |
| 275 TEST_F(ModuleSystemTest, TestRequireAsync) { | |
| 276 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 277 env()->module_system()); | |
| 278 env()->RegisterModule("add", | |
| 279 "define('add', [], function() {" | |
| 280 " return { Add: function(x, y) { return x + y; } };" | |
| 281 "});"); | |
| 282 env()->RegisterModule("math", | |
| 283 "define('math', ['add'], function(add) {" | |
| 284 " return { Add: add.Add };" | |
| 285 "});"); | |
| 286 env()->RegisterModule( | |
| 287 "test", | |
| 288 "requireAsync('math').then(function(math) {" | |
| 289 " requireNative('assert').AssertTrue(math.Add(3, 5) == 8);" | |
| 290 "});"); | |
| 291 env()->module_system()->Require("test"); | |
| 292 RunResolvedPromises(); | |
| 293 } | |
| 294 | |
| 295 TEST_F(ModuleSystemTest, TestRequireAsyncInParallel) { | |
| 296 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 297 env()->module_system()); | |
| 298 env()->RegisterModule("add", | |
| 299 "define('add', [], function() {" | |
| 300 " return { Add: function(x, y) { return x + y; } };" | |
| 301 "});"); | |
| 302 env()->RegisterModule( | |
| 303 "subtract", | |
| 304 "define('subtract', [], function() {" | |
| 305 " return { Subtract: function(x, y) { return x - y; } };" | |
| 306 "});"); | |
| 307 env()->RegisterModule( | |
| 308 "math", | |
| 309 "exports.AddAndSubtract = function(x, y, z) {" | |
| 310 " return Promise.all([requireAsync('add')," | |
| 311 " requireAsync('subtract')" | |
| 312 " ]).then(function(modules) {" | |
| 313 " return modules[1].Subtract(modules[0].Add(x, y), z);" | |
| 314 " });" | |
| 315 "};"); | |
| 316 env()->RegisterModule("test", | |
| 317 "var AddAndSubtract = require('math').AddAndSubtract;" | |
| 318 "AddAndSubtract(3, 5, 2).then(function(result) {" | |
| 319 " requireNative('assert').AssertTrue(result == 6);" | |
| 320 "});"); | |
| 321 env()->module_system()->Require("test"); | |
| 322 RunResolvedPromises(); | |
| 323 } | |
| 324 | |
| 325 TEST_F(ModuleSystemTest, TestNestedRequireAsyncs) { | |
| 326 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 327 env()->module_system()); | |
| 328 env()->RegisterModule("first", | |
| 329 "define('first', [], function() {" | |
| 330 " return { next: 'second' };" | |
| 331 "});"); | |
| 332 env()->RegisterModule("second", | |
| 333 "define('second', [], function() {" | |
| 334 " return { next: '' };" | |
| 335 "});"); | |
| 336 env()->RegisterModule( | |
| 337 "test", | |
| 338 "requireAsync('first').then(function(module) {" | |
| 339 " return requireAsync(module.next)" | |
| 340 "}).then(function(module) {" | |
| 341 " requireNative('assert').AssertTrue(module.next === '');" | |
| 342 "});"); | |
| 343 env()->module_system()->Require("test"); | |
| 344 RunResolvedPromises(); | |
| 345 } | |
| 346 | |
| 347 TEST_F(ModuleSystemTest, TestRequireFromAMDModule) { | |
| 348 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 349 env()->module_system()); | |
| 350 env()->RegisterModule("add", | |
| 351 "exports.Add = function(x, y) { return x + y; };"); | |
| 352 env()->RegisterModule("math", | |
| 353 "define('math', [], function() {" | |
| 354 " var add = require('add');" | |
| 355 " return { Add: add.Add };" | |
| 356 "});"); | |
| 357 env()->RegisterModule( | |
| 358 "test", | |
| 359 "requireAsync('math').then(function(math) {" | |
| 360 " requireNative('assert').AssertTrue(math.Add(3, 5) == 8);" | |
| 361 "});"); | |
| 362 env()->module_system()->Require("test"); | |
| 363 RunResolvedPromises(); | |
| 364 } | |
| 365 | |
| 366 TEST_F(ModuleSystemTest, TestRequireAsyncFromAMDModule) { | |
| 367 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 368 env()->module_system()); | |
| 369 env()->RegisterModule("add", | |
| 370 "define('add', [], function() {" | |
| 371 " return { Add: function(x, y) { return x + y; } };" | |
| 372 "});"); | |
| 373 env()->RegisterModule("math", | |
| 374 "define('math', [], function() {" | |
| 375 " function Add(x, y) {" | |
| 376 " return requireAsync('add').then(function(add) {" | |
| 377 " return add.Add(x, y);" | |
| 378 " });" | |
| 379 " }" | |
| 380 " return { Add: Add };" | |
| 381 "});"); | |
| 382 env()->RegisterModule("test", | |
| 383 "requireAsync('math').then(function(math) {" | |
| 384 " return math.Add(3, 6);" | |
| 385 "}).then(function(result) {" | |
| 386 " requireNative('assert').AssertTrue(result == 9);" | |
| 387 "});"); | |
| 388 env()->module_system()->Require("test"); | |
| 389 RunResolvedPromises(); | |
| 390 } | |
| 391 | |
| 392 TEST_F(ModuleSystemTest, TestRequireAsyncFromAnotherContext) { | |
| 393 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 394 env()->module_system()); | |
| 395 env()->RegisterModule( | |
| 396 "test", | |
| 397 "requireAsync('natives').then(function(natives) {" | |
| 398 " natives.requireAsync('ping').then(function(ping) {" | |
| 399 " return ping();" | |
| 400 " }).then(function(result) {" | |
| 401 " requireNative('assert').AssertTrue(result == 'pong');" | |
| 402 " });" | |
| 403 "});"); | |
| 404 scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment(); | |
| 405 other_env->RegisterModule("ping", | |
| 406 "define('ping', ['natives'], function(natives) {" | |
| 407 " return function() {" | |
| 408 " return 'pong';" | |
| 409 " }" | |
| 410 "});"); | |
| 411 gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule( | |
| 412 env()->isolate(), "natives", other_env->module_system()->NewInstance()); | |
| 413 gin::ModuleRegistry::From(other_env->context()->v8_context()) | |
| 414 ->AddBuiltinModule( | |
| 415 env()->isolate(), "natives", env()->module_system()->NewInstance()); | |
| 416 env()->module_system()->Require("test"); | |
| 417 RunResolvedPromises(); | |
| 418 } | |
| 419 | |
| 420 TEST_F(ModuleSystemTest, TestRequireAsyncBetweenContexts) { | |
| 421 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 422 env()->module_system()); | |
| 423 env()->RegisterModule("pong", | |
| 424 "define('pong', [], function() {" | |
| 425 " return function() { return 'done'; };" | |
| 426 "});"); | |
| 427 env()->RegisterModule( | |
| 428 "test", | |
| 429 "requireAsync('natives').then(function(natives) {" | |
| 430 " natives.requireAsync('ping').then(function(ping) {" | |
| 431 " return ping();" | |
| 432 " }).then(function(pong) {" | |
| 433 " return pong();" | |
| 434 " }).then(function(result) {" | |
| 435 " requireNative('assert').AssertTrue(result == 'done');" | |
| 436 " });" | |
| 437 "});"); | |
| 438 scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment(); | |
| 439 other_env->RegisterModule("ping", | |
| 440 "define('ping', ['natives'], function(natives) {" | |
| 441 " return function() {" | |
| 442 " return natives.requireAsync('pong');" | |
| 443 " }" | |
| 444 "});"); | |
| 445 gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule( | |
| 446 env()->isolate(), "natives", other_env->module_system()->NewInstance()); | |
| 447 gin::ModuleRegistry::From(other_env->context()->v8_context()) | |
| 448 ->AddBuiltinModule( | |
| 449 env()->isolate(), "natives", env()->module_system()->NewInstance()); | |
| 450 env()->module_system()->Require("test"); | |
| 451 RunResolvedPromises(); | |
| 452 } | |
| 453 | |
| 454 TEST_F(ModuleSystemTest, TestRequireAsyncFromContextWithNoModuleRegistry) { | |
| 455 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 456 env()->module_system()); | |
| 457 env()->RegisterModule("test", | |
| 458 "requireAsync('natives').then(function(natives) {" | |
| 459 " var AssertTrue = requireNative('assert').AssertTrue;" | |
| 460 " natives.requireAsync('foo').then(function() {" | |
| 461 " AssertTrue(false);" | |
| 462 " }).catch(function(error) {" | |
| 463 " AssertTrue(error.message == " | |
| 464 " 'Extension view no longer exists');" | |
| 465 " });" | |
| 466 "});"); | |
| 467 scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment(); | |
| 468 gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule( | |
| 469 env()->isolate(), "natives", other_env->module_system()->NewInstance()); | |
| 470 other_env->ShutdownGin(); | |
| 471 env()->module_system()->Require("test"); | |
| 472 RunResolvedPromises(); | |
| 473 } | |
| 474 | |
| 475 TEST_F(ModuleSystemTest, TestRequireAsyncFromContextWithNoModuleSystem) { | |
| 476 ModuleSystem::NativesEnabledScope natives_enabled_scope( | |
| 477 env()->module_system()); | |
| 478 env()->RegisterModule("test", | |
| 479 "requireAsync('natives').then(function(natives) {" | |
| 480 " requireNative('assert').AssertTrue(" | |
| 481 " natives.requireAsync('foo') === undefined);" | |
| 482 "});"); | |
| 483 scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment(); | |
| 484 gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule( | |
| 485 env()->isolate(), "natives", other_env->module_system()->NewInstance()); | |
| 486 other_env->ShutdownModuleSystem(); | |
| 487 env()->module_system()->Require("test"); | |
| 488 RunResolvedPromises(); | |
| 489 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 375243002:
Move ModuleSystemTest and the tests that use it into extensions/. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src