1 // Copyright (c) 2011 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.
5 #ifndef CHROME_TEST_BASE_V8_UNIT_TEST_H_
6 #define CHROME_TEST_BASE_V8_UNIT_TEST_H_
11 #include "base/files/file_path.h"
12 #include "base/strings/string_piece.h"
13 #include "testing/gtest/include/gtest/gtest.h"
14 #include "v8/include/v8.h"
16 // A superclass for unit tests that involve running JavaScript. This class
17 // sets up V8 context and has methods that make it easy to execute scripts in
18 // this context as well as call functions in the context.
19 class V8UnitTest : public testing::Test {
22 virtual ~V8UnitTest();
24 // Methods from testing::Test.
25 virtual void SetUp() OVERRIDE;
28 // Add a custom helper JS library for your test. If |library_path| is
29 // relative, it'll be read as relative to the test data dir.
30 void AddLibrary(const base::FilePath& library_path);
32 // Runs |test_fixture|.|test_name| using the framework in test_api.js.
33 bool RunJavascriptTestF(const std::string& test_fixture,
34 const std::string& test_name);
36 // Executes the given |script_source| in the context. The specified
37 // |script_name| is used when reporting errors.
38 virtual void ExecuteScriptInContext(const base::StringPiece& script_source,
39 const base::StringPiece& script_name);
41 // Set the variable |var_name| to a string |value| in the global scope.
42 virtual void SetGlobalStringVar(const std::string& var_name,
43 const std::string& value);
45 // Converts the v8::TryCatch |try_catch| into a human readable string.
46 virtual std::string ExceptionToString(const v8::TryCatch& try_catch);
48 // Calls the specified |function_name| that resides in the global scope of the
49 // context. If the function throws an exception, FAIL() is called to indicate
50 // a unit test failure. This is useful for executing unit test functions
51 // implemented in JavaScript.
52 virtual void TestFunction(const std::string& function_name);
54 // This method is bound to a global function "log" in the context, as well as
55 // to log, warn, and info of the console object. Scripts running in the
56 // context can call this with |args| to print out logging information to the
58 static void Log(const v8::FunctionCallbackInfo<v8::Value>& args);
60 // This method is bound to console.error in the context. Any calls to this
61 // will log |args| to the console and also signal an error condition causing
62 // |RunJavascriptF| to fail.
63 static void Error(const v8::FunctionCallbackInfo<v8::Value>& args);
65 // This method is bound to a method "chrome.send" in the context. When
66 // test_api calls testDone with |args| to report its results, this will
67 // capture and hold the results for analysis by |RunJavascriptF|.
68 static void ChromeSend(const v8::FunctionCallbackInfo<v8::Value>& args);
71 // A helper class to ensure that the lifetimes of the Isolate and the
72 // HandleScope are correctly nested.
75 IsolateScope() : isolate_(v8::Isolate::New()) { isolate_->Enter(); }
82 v8::Isolate* isolate() const { return isolate_; }
85 v8::Isolate* isolate_;
87 DISALLOW_COPY_AND_ASSIGN(IsolateScope);
91 v8::Isolate* isolate() const { return isolate_scope_.isolate(); }
93 // Executes all added javascript libraries. Returns true if no errors.
94 bool ExecuteJavascriptLibraries();
96 // Initializes paths and libraries.
97 void InitPathsAndLibraries();
99 IsolateScope isolate_scope_;
101 // Handle scope that is used throughout the life of this class.
102 v8::HandleScope handle_scope_;
104 // Context for the JavaScript in the test.
105 v8::Persistent<v8::Context> context_;
107 // User added libraries.
108 std::vector<base::FilePath> user_libraries_;
111 #endif // CHROME_TEST_BASE_V8_UNIT_TEST_H_