src/extensions/renderer/module_system_unittest.cc

   1 // Copyright 2014 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 "extensions/renderer/module_system.h"
   7 #include "extensions/renderer/module_system_test.h"
   8 #include "gin/modules/module_registry.h"
   9
  10 namespace extensions {
  11
  12 class CounterNatives : public ObjectBackedNativeHandler {
  13  public:
  14   explicit CounterNatives(ScriptContext* context)
  15       : ObjectBackedNativeHandler(context), counter_(0) {
  16     RouteFunction("Get",
  17                   base::Bind(&CounterNatives::Get, base::Unretained(this)));
  18     RouteFunction(
  19         "Increment",
  20         base::Bind(&CounterNatives::Increment, base::Unretained(this)));
  21   }
  22
  23   void Get(const v8::FunctionCallbackInfo<v8::Value>& args) {
  24     args.GetReturnValue().Set(static_cast<int32_t>(counter_));
  25   }
  26
  27   void Increment(const v8::FunctionCallbackInfo<v8::Value>& args) {
  28     counter_++;
  29   }
  30
  31  private:
  32   int counter_;
  33 };
  34
  35 class TestExceptionHandler : public ModuleSystem::ExceptionHandler {
  36  public:
  37   TestExceptionHandler() : handled_exception_(false) {}
  38
  39   virtual void HandleUncaughtException(const v8::TryCatch& try_catch) OVERRIDE {
  40     handled_exception_ = true;
  41   }
  42
  43   bool handled_exception() const { return handled_exception_; }
  44
  45  private:
  46   bool handled_exception_;
  47 };
  48
  49 TEST_F(ModuleSystemTest, TestExceptionHandling) {
  50   ModuleSystem::NativesEnabledScope natives_enabled_scope(
  51       env()->module_system());
  52   TestExceptionHandler* handler = new TestExceptionHandler;
  53   scoped_ptr<ModuleSystem::ExceptionHandler> scoped_handler(handler);
  54   ASSERT_FALSE(handler->handled_exception());
  55   env()->module_system()->SetExceptionHandlerForTest(scoped_handler.Pass());
  56
  57   env()->RegisterModule("test", "throw 'hi';");
  58   env()->module_system()->Require("test");
  59   ASSERT_TRUE(handler->handled_exception());
  60
  61   ExpectNoAssertionsMade();
  62 }
  63
  64 TEST_F(ModuleSystemTest, TestRequire) {
  65   ModuleSystem::NativesEnabledScope natives_enabled_scope(
  66       env()->module_system());
  67   env()->RegisterModule("add",
  68                         "exports.Add = function(x, y) { return x + y; };");
  69   env()->RegisterModule("test",
  70                         "var Add = require('add').Add;"
  71                         "requireNative('assert').AssertTrue(Add(3, 5) == 8);");
  72   env()->module_system()->Require("test");
  73 }
  74
  75 TEST_F(ModuleSystemTest, TestNestedRequire) {
  76   ModuleSystem::NativesEnabledScope natives_enabled_scope(
  77       env()->module_system());
  78   env()->RegisterModule("add",
  79                         "exports.Add = function(x, y) { return x + y; };");
  80   env()->RegisterModule("double",
  81                         "var Add = require('add').Add;"
  82                         "exports.Double = function(x) { return Add(x, x); };");
  83   env()->RegisterModule("test",
  84                         "var Double = require('double').Double;"
  85                         "requireNative('assert').AssertTrue(Double(3) == 6);");
  86   env()->module_system()->Require("test");
  87 }
  88
  89 TEST_F(ModuleSystemTest, TestModuleInsulation) {
  90   ModuleSystem::NativesEnabledScope natives_enabled_scope(
  91       env()->module_system());
  92   env()->RegisterModule("x",
  93                         "var x = 10;"
  94                         "exports.X = function() { return x; };");
  95   env()->RegisterModule("y",
  96                         "var x = 15;"
  97                         "require('x');"
  98                         "exports.Y = function() { return x; };");
  99   env()->RegisterModule("test",
 100                         "var Y = require('y').Y;"
 101                         "var X = require('x').X;"
 102                         "var assert = requireNative('assert');"
 103                         "assert.AssertTrue(!this.hasOwnProperty('x'));"
 104                         "assert.AssertTrue(Y() == 15);"
 105                         "assert.AssertTrue(X() == 10);");
 106   env()->module_system()->Require("test");
 107 }
 108
 109 TEST_F(ModuleSystemTest, TestNativesAreDisabledOutsideANativesEnabledScope) {
 110   env()->RegisterModule("test",
 111                         "var assert;"
 112                         "try {"
 113                         "  assert = requireNative('assert');"
 114                         "} catch (e) {"
 115                         "  var caught = true;"
 116                         "}"
 117                         "if (assert) {"
 118                         "  assert.AssertTrue(true);"
 119                         "}");
 120   env()->module_system()->Require("test");
 121   ExpectNoAssertionsMade();
 122 }
 123
 124 TEST_F(ModuleSystemTest, TestNativesAreEnabledWithinANativesEnabledScope) {
 125   env()->RegisterModule("test",
 126                         "var assert = requireNative('assert');"
 127                         "assert.AssertTrue(true);");
 128
 129   {
 130     ModuleSystem::NativesEnabledScope natives_enabled(env()->module_system());
 131     {
 132       ModuleSystem::NativesEnabledScope natives_enabled_inner(
 133           env()->module_system());
 134     }
 135     env()->module_system()->Require("test");
 136   }
 137 }
 138
 139 TEST_F(ModuleSystemTest, TestLazyField) {
 140   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 141       env()->module_system());
 142   env()->RegisterModule("lazy", "exports.x = 5;");
 143
 144   v8::Handle<v8::Object> object = env()->CreateGlobal("object");
 145
 146   env()->module_system()->SetLazyField(object, "blah", "lazy", "x");
 147
 148   env()->RegisterModule("test",
 149                         "var assert = requireNative('assert');"
 150                         "assert.AssertTrue(object.blah == 5);");
 151   env()->module_system()->Require("test");
 152 }
 153
 154 TEST_F(ModuleSystemTest, TestLazyFieldYieldingObject) {
 155   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 156       env()->module_system());
 157   env()->RegisterModule(
 158       "lazy",
 159       "var object = {};"
 160       "object.__defineGetter__('z', function() { return 1; });"
 161       "object.x = 5;"
 162       "object.y = function() { return 10; };"
 163       "exports.object = object;");
 164
 165   v8::Handle<v8::Object> object = env()->CreateGlobal("object");
 166
 167   env()->module_system()->SetLazyField(object, "thing", "lazy", "object");
 168
 169   env()->RegisterModule("test",
 170                         "var assert = requireNative('assert');"
 171                         "assert.AssertTrue(object.thing.x == 5);"
 172                         "assert.AssertTrue(object.thing.y() == 10);"
 173                         "assert.AssertTrue(object.thing.z == 1);");
 174   env()->module_system()->Require("test");
 175 }
 176
 177 TEST_F(ModuleSystemTest, TestLazyFieldIsOnlyEvaledOnce) {
 178   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 179       env()->module_system());
 180   env()->module_system()->RegisterNativeHandler(
 181       "counter",
 182       scoped_ptr<NativeHandler>(new CounterNatives(env()->context())));
 183   env()->RegisterModule("lazy",
 184                         "requireNative('counter').Increment();"
 185                         "exports.x = 5;");
 186
 187   v8::Handle<v8::Object> object = env()->CreateGlobal("object");
 188
 189   env()->module_system()->SetLazyField(object, "x", "lazy", "x");
 190
 191   env()->RegisterModule("test",
 192                         "var assert = requireNative('assert');"
 193                         "var counter = requireNative('counter');"
 194                         "assert.AssertTrue(counter.Get() == 0);"
 195                         "object.x;"
 196                         "assert.AssertTrue(counter.Get() == 1);"
 197                         "object.x;"
 198                         "assert.AssertTrue(counter.Get() == 1);");
 199   env()->module_system()->Require("test");
 200 }
 201
 202 TEST_F(ModuleSystemTest, TestRequireNativesAfterLazyEvaluation) {
 203   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 204       env()->module_system());
 205   env()->RegisterModule("lazy", "exports.x = 5;");
 206   v8::Handle<v8::Object> object = env()->CreateGlobal("object");
 207
 208   env()->module_system()->SetLazyField(object, "x", "lazy", "x");
 209   env()->RegisterModule("test",
 210                         "object.x;"
 211                         "requireNative('assert').AssertTrue(true);");
 212   env()->module_system()->Require("test");
 213 }
 214
 215 TEST_F(ModuleSystemTest, TestTransitiveRequire) {
 216   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 217       env()->module_system());
 218   env()->RegisterModule("dependency", "exports.x = 5;");
 219   env()->RegisterModule("lazy", "exports.output = require('dependency');");
 220
 221   v8::Handle<v8::Object> object = env()->CreateGlobal("object");
 222
 223   env()->module_system()->SetLazyField(object, "thing", "lazy", "output");
 224
 225   env()->RegisterModule("test",
 226                         "var assert = requireNative('assert');"
 227                         "assert.AssertTrue(object.thing.x == 5);");
 228   env()->module_system()->Require("test");
 229 }
 230
 231 TEST_F(ModuleSystemTest, TestModulesOnlyGetEvaledOnce) {
 232   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 233       env()->module_system());
 234   env()->module_system()->RegisterNativeHandler(
 235       "counter",
 236       scoped_ptr<NativeHandler>(new CounterNatives(env()->context())));
 237
 238   env()->RegisterModule("incrementsWhenEvaled",
 239                         "requireNative('counter').Increment();");
 240   env()->RegisterModule("test",
 241                         "var assert = requireNative('assert');"
 242                         "var counter = requireNative('counter');"
 243                         "assert.AssertTrue(counter.Get() == 0);"
 244                         "require('incrementsWhenEvaled');"
 245                         "assert.AssertTrue(counter.Get() == 1);"
 246                         "require('incrementsWhenEvaled');"
 247                         "assert.AssertTrue(counter.Get() == 1);");
 248
 249   env()->module_system()->Require("test");
 250 }
 251
 252 TEST_F(ModuleSystemTest, TestOverrideNativeHandler) {
 253   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 254       env()->module_system());
 255   env()->OverrideNativeHandler("assert", "exports.AssertTrue = function() {};");
 256   env()->RegisterModule("test", "requireNative('assert').AssertTrue(true);");
 257   ExpectNoAssertionsMade();
 258   env()->module_system()->Require("test");
 259 }
 260
 261 TEST_F(ModuleSystemTest, TestOverrideNonExistentNativeHandler) {
 262   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 263       env()->module_system());
 264   env()->OverrideNativeHandler("thing", "exports.x = 5;");
 265   env()->RegisterModule("test",
 266                         "var assert = requireNative('assert');"
 267                         "assert.AssertTrue(requireNative('thing').x == 5);");
 268   env()->module_system()->Require("test");
 269 }
 270
 271 TEST_F(ModuleSystemTest, TestRequireAsync) {
 272   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 273       env()->module_system());
 274   env()->RegisterModule("add",
 275                         "define('add', [], function() {"
 276                         "  return { Add: function(x, y) { return x + y; } };"
 277                         "});");
 278   env()->RegisterModule("math",
 279                         "define('math', ['add'], function(add) {"
 280                         "  return { Add: add.Add };"
 281                         "});");
 282   env()->RegisterModule(
 283       "test",
 284       "requireAsync('math').then(function(math) {"
 285       "  requireNative('assert').AssertTrue(math.Add(3, 5) == 8);"
 286       "});");
 287   env()->module_system()->Require("test");
 288   RunResolvedPromises();
 289 }
 290
 291 TEST_F(ModuleSystemTest, TestRequireAsyncInParallel) {
 292   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 293       env()->module_system());
 294   env()->RegisterModule("add",
 295                         "define('add', [], function() {"
 296                         "  return { Add: function(x, y) { return x + y; } };"
 297                         "});");
 298   env()->RegisterModule(
 299       "subtract",
 300       "define('subtract', [], function() {"
 301       "  return { Subtract: function(x, y) { return x - y; } };"
 302       "});");
 303   env()->RegisterModule(
 304       "math",
 305       "exports.AddAndSubtract = function(x, y, z) {"
 306       "  return Promise.all([requireAsync('add'),"
 307       "                      requireAsync('subtract')"
 308       "  ]).then(function(modules) {"
 309       "    return modules[1].Subtract(modules[0].Add(x, y), z);"
 310       "  });"
 311       "};");
 312   env()->RegisterModule("test",
 313                         "var AddAndSubtract = require('math').AddAndSubtract;"
 314                         "AddAndSubtract(3, 5, 2).then(function(result) {"
 315                         "  requireNative('assert').AssertTrue(result == 6);"
 316                         "});");
 317   env()->module_system()->Require("test");
 318   RunResolvedPromises();
 319 }
 320
 321 TEST_F(ModuleSystemTest, TestNestedRequireAsyncs) {
 322   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 323       env()->module_system());
 324   env()->RegisterModule("first",
 325                         "define('first', [], function() {"
 326                         "  return { next: 'second' };"
 327                         "});");
 328   env()->RegisterModule("second",
 329                         "define('second', [], function() {"
 330                         "  return { next: '' };"
 331                         "});");
 332   env()->RegisterModule(
 333       "test",
 334       "requireAsync('first').then(function(module) {"
 335       "  return requireAsync(module.next)"
 336       "}).then(function(module) {"
 337       "  requireNative('assert').AssertTrue(module.next === '');"
 338       "});");
 339   env()->module_system()->Require("test");
 340   RunResolvedPromises();
 341 }
 342
 343 TEST_F(ModuleSystemTest, TestRequireFromAMDModule) {
 344   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 345       env()->module_system());
 346   env()->RegisterModule("add",
 347                         "exports.Add = function(x, y) { return x + y; };");
 348   env()->RegisterModule("math",
 349                         "define('math', [], function() {"
 350                         "  var add = require('add');"
 351                         "  return { Add: add.Add };"
 352                         "});");
 353   env()->RegisterModule(
 354       "test",
 355       "requireAsync('math').then(function(math) {"
 356       "  requireNative('assert').AssertTrue(math.Add(3, 5) == 8);"
 357       "});");
 358   env()->module_system()->Require("test");
 359   RunResolvedPromises();
 360 }
 361
 362 TEST_F(ModuleSystemTest, TestRequireAsyncFromAMDModule) {
 363   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 364       env()->module_system());
 365   env()->RegisterModule("add",
 366                         "define('add', [], function() {"
 367                         "  return { Add: function(x, y) { return x + y; } };"
 368                         "});");
 369   env()->RegisterModule("math",
 370                         "define('math', [], function() {"
 371                         "  function Add(x, y) {"
 372                         "    return requireAsync('add').then(function(add) {"
 373                         "      return add.Add(x, y);"
 374                         "    });"
 375                         "  }"
 376                         "  return { Add: Add };"
 377                         "});");
 378   env()->RegisterModule("test",
 379                         "requireAsync('math').then(function(math) {"
 380                         "  return math.Add(3, 6);"
 381                         "}).then(function(result) {"
 382                         "  requireNative('assert').AssertTrue(result == 9);"
 383                         "});");
 384   env()->module_system()->Require("test");
 385   RunResolvedPromises();
 386 }
 387
 388 TEST_F(ModuleSystemTest, TestRequireAsyncFromAnotherContext) {
 389   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 390       env()->module_system());
 391   env()->RegisterModule(
 392       "test",
 393       "requireAsync('natives').then(function(natives) {"
 394       "  natives.requireAsync('ping').then(function(ping) {"
 395       "    return ping();"
 396       "  }).then(function(result) {"
 397       "    requireNative('assert').AssertTrue(result == 'pong');"
 398       "  });"
 399       "});");
 400   scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment();
 401   other_env->RegisterModule("ping",
 402                             "define('ping', ['natives'], function(natives) {"
 403                             "  return function() {"
 404                             "    return 'pong';"
 405                             "  }"
 406                             "});");
 407   gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule(
 408       env()->isolate(), "natives", other_env->module_system()->NewInstance());
 409   gin::ModuleRegistry::From(other_env->context()->v8_context())
 410       ->AddBuiltinModule(
 411           env()->isolate(), "natives", env()->module_system()->NewInstance());
 412   env()->module_system()->Require("test");
 413   RunResolvedPromises();
 414 }
 415
 416 TEST_F(ModuleSystemTest, TestRequireAsyncBetweenContexts) {
 417   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 418       env()->module_system());
 419   env()->RegisterModule("pong",
 420                         "define('pong', [], function() {"
 421                         "  return function() { return 'done'; };"
 422                         "});");
 423   env()->RegisterModule(
 424       "test",
 425       "requireAsync('natives').then(function(natives) {"
 426       "  natives.requireAsync('ping').then(function(ping) {"
 427       "    return ping();"
 428       "  }).then(function(pong) {"
 429       "    return pong();"
 430       "  }).then(function(result) {"
 431       "    requireNative('assert').AssertTrue(result == 'done');"
 432       "  });"
 433       "});");
 434   scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment();
 435   other_env->RegisterModule("ping",
 436                             "define('ping', ['natives'], function(natives) {"
 437                             "  return function() {"
 438                             "    return natives.requireAsync('pong');"
 439                             "  }"
 440                             "});");
 441   gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule(
 442       env()->isolate(), "natives", other_env->module_system()->NewInstance());
 443   gin::ModuleRegistry::From(other_env->context()->v8_context())
 444       ->AddBuiltinModule(
 445           env()->isolate(), "natives", env()->module_system()->NewInstance());
 446   env()->module_system()->Require("test");
 447   RunResolvedPromises();
 448 }
 449
 450 TEST_F(ModuleSystemTest, TestRequireAsyncFromContextWithNoModuleRegistry) {
 451   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 452       env()->module_system());
 453   env()->RegisterModule("test",
 454                         "requireAsync('natives').then(function(natives) {"
 455                         "  var AssertTrue = requireNative('assert').AssertTrue;"
 456                         "  natives.requireAsync('foo').then(function() {"
 457                         "    AssertTrue(false);"
 458                         "  }).catch(function(error) {"
 459                         "    AssertTrue(error.message == "
 460                         "               'Extension view no longer exists');"
 461                         "  });"
 462                         "});");
 463   scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment();
 464   gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule(
 465       env()->isolate(), "natives", other_env->module_system()->NewInstance());
 466   other_env->ShutdownGin();
 467   env()->module_system()->Require("test");
 468   RunResolvedPromises();
 469 }
 470
 471 TEST_F(ModuleSystemTest, TestRequireAsyncFromContextWithNoModuleSystem) {
 472   ModuleSystem::NativesEnabledScope natives_enabled_scope(
 473       env()->module_system());
 474   env()->RegisterModule("test",
 475                         "requireAsync('natives').then(function(natives) {"
 476                         "  requireNative('assert').AssertTrue("
 477                         "      natives.requireAsync('foo') === undefined);"
 478                         "});");
 479   scoped_ptr<ModuleSystemTestEnvironment> other_env = CreateEnvironment();
 480   gin::ModuleRegistry::From(env()->context()->v8_context())->AddBuiltinModule(
 481       env()->isolate(), "natives", other_env->module_system()->NewInstance());
 482   other_env->ShutdownModuleSystem();
 483   env()->module_system()->Require("test");
 484   RunResolvedPromises();
 485 }
 486
 487 }  // namespace extensions