chrome/test/base/module_system_test.h

   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 #ifndef CHROME_TEST_BASE_MODULE_SYSTEM_TEST_H_
   6 #define CHROME_TEST_BASE_MODULE_SYSTEM_TEST_H_
   7
   8 #include "chrome/renderer/extensions/chrome_v8_context.h"
   9 #include "extensions/renderer/module_system.h"
  10 #include "extensions/renderer/scoped_persistent.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12 #include "v8/include/v8.h"
  13
  14 // Test fixture for testing JS that makes use of the module system.
  15 //
  16 // Typically tests will look like:
  17 //
  18 // TEST_F(MyModuleSystemTest, TestStuff) {
  19 //   ModuleSystem::NativesEnabledScope natives_enabled(module_system_.get());
  20 //   RegisterModule("test", "requireNative('assert').AssertTrue(true);");
  21 //   module_system_->Require("test");
  22 // }
  23 //
  24 // By default a test will fail if no method in the native module 'assert' is
  25 // called. This behaviour can be overridden by calling ExpectNoAssertionsMade().
  26 //
  27 // TODO(kalman): move this back into chrome/renderer/extensions.
  28 class ModuleSystemTest : public testing::Test {
  29  public:
  30   ModuleSystemTest();
  31   virtual ~ModuleSystemTest();
  32
  33   virtual void TearDown() OVERRIDE;
  34
  35  protected:
  36   // Register a named JS module in the module system.
  37   void RegisterModule(const std::string& name, const std::string& code);
  38
  39   // Register a named JS module with source retrieved from a ResourceBundle.
  40   void RegisterModule(const std::string& name, int resource_id);
  41
  42   // Register a named JS module in the module system and tell the module system
  43   // to use it to handle any requireNative() calls for native modules with that
  44   // name.
  45   void OverrideNativeHandler(const std::string& name, const std::string& code);
  46
  47   // Registers |file_name| from chrome/test/data/extensions as a module name
  48   // |module_name|.
  49   void RegisterTestFile(const std::string& module_name,
  50                         const std::string& file_name);
  51
  52   // Make the test fail if any asserts are called. By default a test will fail
  53   // if no asserts are called.
  54   void ExpectNoAssertionsMade();
  55
  56   // Create an empty object in the global scope with name |name|.
  57   v8::Handle<v8::Object> CreateGlobal(const std::string& name);
  58
  59   v8::Isolate* isolate_;
  60   v8::HandleScope handle_scope_;
  61   scoped_ptr<extensions::ChromeV8Context> context_;
  62   class AssertNatives;
  63   AssertNatives* assert_natives_;
  64   class StringSourceMap;
  65   scoped_ptr<StringSourceMap> source_map_;
  66   bool should_assertions_be_made_;
  67
  68  private:
  69   DISALLOW_COPY_AND_ASSIGN(ModuleSystemTest);
  70 };
  71
  72 #endif  // CHROME_TEST_BASE_MODULE_SYSTEM_TEST_H_