gin/modules/module_registry_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 "gin/modules/module_registry.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "gin/modules/module_registry_observer.h"
  10 #include "gin/modules/module_runner_delegate.h"
  11 #include "gin/public/context_holder.h"
  12 #include "gin/public/isolate_holder.h"
  13 #include "gin/shell_runner.h"
  14 #include "gin/test/v8_test.h"
  15 #include "v8/include/v8.h"
  16
  17 namespace gin {
  18
  19 namespace {
  20
  21 struct TestHelper {
  22   TestHelper(v8::Isolate* isolate)
  23       : delegate(std::vector<base::FilePath>()),
  24         runner(new ShellRunner(&delegate, isolate)),
  25         scope(runner.get()) {
  26   }
  27
  28   base::MessageLoop message_loop;
  29   ModuleRunnerDelegate delegate;
  30   scoped_ptr<ShellRunner> runner;
  31   Runner::Scope scope;
  32 };
  33
  34 class ModuleRegistryObserverImpl : public ModuleRegistryObserver {
  35  public:
  36   ModuleRegistryObserverImpl() : did_add_count_(0) {}
  37
  38   void OnDidAddPendingModule(
  39       const std::string& id,
  40       const std::vector<std::string>& dependencies) override {
  41     did_add_count_++;
  42     id_ = id;
  43     dependencies_ = dependencies;
  44   }
  45
  46   int did_add_count() { return did_add_count_; }
  47   const std::string& id() const { return id_; }
  48   const std::vector<std::string>& dependencies() const { return dependencies_; }
  49
  50  private:
  51   int did_add_count_;
  52   std::string id_;
  53   std::vector<std::string> dependencies_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(ModuleRegistryObserverImpl);
  56 };
  57
  58 void NestedCallback(v8::Handle<v8::Value> value) {
  59   FAIL() << "Should not be called";
  60 }
  61
  62 void OnModuleLoaded(TestHelper* helper,
  63                     v8::Isolate* isolate,
  64                     int64_t* counter,
  65                     v8::Handle<v8::Value> value) {
  66   ASSERT_TRUE(value->IsNumber());
  67   v8::Handle<v8::Integer> int_value = v8::Handle<v8::Integer>::Cast(value);
  68   *counter += int_value->Value();
  69   ModuleRegistry::From(helper->runner->GetContextHolder()->context())
  70       ->LoadModule(isolate, "two", base::Bind(NestedCallback));
  71 }
  72
  73 }  // namespace
  74
  75 typedef V8Test ModuleRegistryTest;
  76
  77 // Verifies ModuleRegistry is not available after ContextHolder has been
  78 // deleted.
  79 TEST_F(ModuleRegistryTest, DestroyedWithContext) {
  80   v8::Isolate::Scope isolate_scope(instance_->isolate());
  81   v8::HandleScope handle_scope(instance_->isolate());
  82   v8::Handle<v8::Context> context = v8::Context::New(
  83       instance_->isolate(), NULL, v8::Handle<v8::ObjectTemplate>());
  84   {
  85     ContextHolder context_holder(instance_->isolate());
  86     context_holder.SetContext(context);
  87     ModuleRegistry* registry = ModuleRegistry::From(context);
  88     EXPECT_TRUE(registry != NULL);
  89   }
  90   ModuleRegistry* registry = ModuleRegistry::From(context);
  91   EXPECT_TRUE(registry == NULL);
  92 }
  93
  94 // Verifies ModuleRegistryObserver is notified appropriately.
  95 TEST_F(ModuleRegistryTest, ModuleRegistryObserverTest) {
  96   TestHelper helper(instance_->isolate());
  97   std::string source =
  98      "define('id', ['dep1', 'dep2'], function() {"
  99      "  return function() {};"
 100      "});";
 101
 102   ModuleRegistryObserverImpl observer;
 103   ModuleRegistry::From(helper.runner->GetContextHolder()->context())->
 104       AddObserver(&observer);
 105   helper.runner->Run(source, "script");
 106   ModuleRegistry::From(helper.runner->GetContextHolder()->context())->
 107       RemoveObserver(&observer);
 108   EXPECT_EQ(1, observer.did_add_count());
 109   EXPECT_EQ("id", observer.id());
 110   ASSERT_EQ(2u, observer.dependencies().size());
 111   EXPECT_EQ("dep1", observer.dependencies()[0]);
 112   EXPECT_EQ("dep2", observer.dependencies()[1]);
 113 }
 114
 115 // Verifies that multiple LoadModule calls for the same module are handled
 116 // correctly.
 117 TEST_F(ModuleRegistryTest, LoadModuleTest) {
 118   TestHelper helper(instance_->isolate());
 119   int64_t counter = 0;
 120   std::string source =
 121       "define('one', [], function() {"
 122       "  return 1;"
 123       "});";
 124
 125   ModuleRegistry::LoadModuleCallback callback =
 126       base::Bind(OnModuleLoaded, &helper, instance_->isolate(), &counter);
 127   for (int i = 0; i < 3; i++) {
 128     ModuleRegistry::From(helper.runner->GetContextHolder()->context())
 129         ->LoadModule(instance_->isolate(), "one", callback);
 130   }
 131   EXPECT_EQ(0, counter);
 132   helper.runner->Run(source, "script");
 133   EXPECT_EQ(3, counter);
 134 }
 135
 136 }  // namespace gin