chrome/renderer/translate/translate_script_browsertest.cc

   1 // Copyright 2013 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/strings/stringprintf.h"
   6 #include "base/strings/utf_string_conversions.h"
   7 #include "chrome/test/base/chrome_render_view_test.h"
   8 #include "components/translate/core/common/translate_errors.h"
   9 #include "grit/components_resources.h"
  10 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  11 #include "third_party/WebKit/public/web/WebScriptSource.h"
  12 #include "ui/base/resource/resource_bundle.h"
  13 #include "v8/include/v8.h"
  14
  15 using blink::WebScriptSource;
  16
  17 namespace {
  18
  19 // JavaScript code to set runtime test flags.
  20 const char kThrowInitializationError[] = "throwInitializationError = true";
  21 const char kThrowUnexpectedScriptError[] = "throwUnexpectedScriptError = true";
  22 const char kCallbackReturnBooleanError[] = "callbackReturnBooleanError = true";
  23 const char kCallbackReturnNumberError[] = "callbackReturnNumberError = true";
  24 const char kSetCallbackErrorCode[] = "callbackErrorCode = ";
  25
  26 // JavaScript code to check if any error happens.
  27 const char kError[] = "cr.googleTranslate.error";
  28
  29 // JavaScript code to get error code.
  30 const char kErrorCode[] = "cr.googleTranslate.errorCode";
  31
  32 // JavaScript code to check if the library is ready.
  33 const char kLibReady[] = "cr.googleTranslate.libReady";
  34
  35 // JavaScript code to perform translation.
  36 const char kTranslate[] = "cr.googleTranslate.translate('auto', 'en')";
  37
  38 // JavaScript code to mimic element.js provided by a translate server.
  39 const char kElementJs[] =
  40     "translateApiKey = '';"
  41     "google = {};"
  42     "google.translate = {};"
  43     "google.translate.TranslateService = function() {"
  44     "  if (window['throwInitializationError']) {"
  45     "    throw 'API initialization error';"
  46     "  }"
  47     "  return {"
  48     "    isAvailable: function() { return true; },"
  49     "    restore: function() {},"
  50     "    translatePage: function(originalLang, targetLang, cb) {"
  51     "      if (window['throwUnexpectedScriptError']) {"
  52     "        throw 'all your base are belong to us';"
  53     "      }"
  54     "      if (window['callbackReturnBooleanError']) {"
  55     "        cb(0, false, true);"
  56     "      }"
  57     "      if (window['callbackReturnNumberError']) {"
  58     "        cb(0, false, callbackErrorCode);"
  59     "      }"
  60     "    }"
  61     "  };"
  62     "};"
  63     "cr.googleTranslate.onTranslateElementLoad();";
  64
  65 std::string GenerateSetCallbackErrorCodeScript(int code) {
  66   return base::StringPrintf("%s%d", kSetCallbackErrorCode, code);
  67 }
  68
  69 };  // namespace
  70
  71 // This class is for testing resource/translate.js works and reports errors
  72 // correctly.
  73 class TranslateScriptBrowserTest : public ChromeRenderViewTest {
  74  public:
  75   TranslateScriptBrowserTest() {}
  76
  77  protected:
  78   void InjectElementLibrary() {
  79     std::string script;
  80     base::StringPiece translate_js = ResourceBundle::GetSharedInstance().
  81         GetRawDataResource(IDR_TRANSLATE_JS);
  82     translate_js.CopyToString(&script);
  83     script += kElementJs;
  84     ExecuteScript(script);
  85   }
  86
  87   void ExecuteScript(const std::string& script) {
  88     WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
  89     GetMainFrame()->executeScript(source);
  90   }
  91
  92   bool GetError() {
  93     return ExecuteScriptAndGetBoolResult(kError);
  94   }
  95
  96   double GetErrorCode() {
  97     return ExecuteScriptAndGetNumberResult(kErrorCode);
  98   }
  99
 100   bool IsLibReady() {
 101     return ExecuteScriptAndGetBoolResult(kLibReady);
 102   }
 103
 104  private:
 105   void SetUp() override { ChromeRenderViewTest::SetUp(); }
 106
 107   void TearDown() override { ChromeRenderViewTest::TearDown(); }
 108
 109   double ExecuteScriptAndGetNumberResult(const std::string& script) {
 110     WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
 111     v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
 112     v8::Handle<v8::Value> result =
 113         GetMainFrame()->executeScriptAndReturnValue(source);
 114     if (result.IsEmpty() || !result->IsNumber()) {
 115       NOTREACHED();
 116       // TODO(toyoshim): Return NaN here and the real implementation in
 117       // TranslateHelper::ExecuteScriptAndGetDoubleResult().
 118       return 0.0;
 119     }
 120     return result->NumberValue();
 121   }
 122
 123   bool ExecuteScriptAndGetBoolResult(const std::string& script) {
 124     WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
 125     v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
 126     v8::Handle<v8::Value> result =
 127         GetMainFrame()->executeScriptAndReturnValue(source);
 128     if (result.IsEmpty() || !result->IsBoolean()) {
 129       NOTREACHED();
 130       return false;
 131     }
 132     return result->BooleanValue();
 133   }
 134
 135   DISALLOW_COPY_AND_ASSIGN(TranslateScriptBrowserTest);
 136 };
 137
 138 // Test if onTranslateElementLoad() succeeds to initialize the element library.
 139 TEST_F(TranslateScriptBrowserTest, ElementLoadSuccess) {
 140   InjectElementLibrary();
 141   EXPECT_TRUE(IsLibReady());
 142   EXPECT_FALSE(GetError());
 143   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 144 }
 145
 146 // Test if onTranslateElementLoad() fails to initialize the element library and
 147 // report the right error code.
 148 TEST_F(TranslateScriptBrowserTest, ElementLoadFailure) {
 149   ExecuteScript(kThrowInitializationError);
 150
 151   InjectElementLibrary();
 152   EXPECT_FALSE(IsLibReady());
 153   EXPECT_TRUE(GetError());
 154   EXPECT_EQ(translate::TranslateErrors::INITIALIZATION_ERROR, GetErrorCode());
 155 }
 156
 157 // Test if cr.googleTranslate.translate() works.
 158 TEST_F(TranslateScriptBrowserTest, TranslateSuccess) {
 159   InjectElementLibrary();
 160   EXPECT_TRUE(IsLibReady());
 161   EXPECT_FALSE(GetError());
 162   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 163
 164   ExecuteScript(kTranslate);
 165
 166   EXPECT_FALSE(GetError());
 167   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 168 }
 169
 170 // Test if cr.googleTranslate.translate() handles library exception correctly.
 171 TEST_F(TranslateScriptBrowserTest, TranslateFail) {
 172   ExecuteScript(kThrowUnexpectedScriptError);
 173
 174   InjectElementLibrary();
 175   EXPECT_TRUE(IsLibReady());
 176   EXPECT_FALSE(GetError());
 177   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 178
 179   ExecuteScript(kTranslate);
 180
 181   EXPECT_TRUE(GetError());
 182   EXPECT_EQ(translate::TranslateErrors::UNEXPECTED_SCRIPT_ERROR,
 183             GetErrorCode());
 184 }
 185
 186 // Test if onTranslateProgress callback handles boolean type error correctly.
 187 // Remove this test once server side changes the API to return a number.
 188 TEST_F(TranslateScriptBrowserTest, CallbackGetBooleanError) {
 189   ExecuteScript(kCallbackReturnBooleanError);
 190
 191   InjectElementLibrary();
 192   EXPECT_TRUE(IsLibReady());
 193   EXPECT_FALSE(GetError());
 194   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 195
 196   ExecuteScript(kTranslate);
 197
 198   EXPECT_TRUE(GetError());
 199   EXPECT_EQ(translate::TranslateErrors::TRANSLATION_ERROR, GetErrorCode());
 200 }
 201
 202 // Test if onTranslateProgress callback handles number type error correctly and
 203 // converts it to the proper error code.
 204 TEST_F(TranslateScriptBrowserTest, CallbackGetNumberError1) {
 205   ExecuteScript(kCallbackReturnNumberError);
 206   ExecuteScript(GenerateSetCallbackErrorCodeScript(1));
 207
 208   InjectElementLibrary();
 209   EXPECT_TRUE(IsLibReady());
 210   EXPECT_FALSE(GetError());
 211   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 212
 213   ExecuteScript(kTranslate);
 214
 215   EXPECT_TRUE(GetError());
 216   EXPECT_EQ(translate::TranslateErrors::TRANSLATION_ERROR, GetErrorCode());
 217 }
 218
 219 // Test if onTranslateProgress callback handles number type error correctly and
 220 // converts it to the proper error code.
 221 TEST_F(TranslateScriptBrowserTest, CallbackGetNumberError2) {
 222   ExecuteScript(kCallbackReturnNumberError);
 223   ExecuteScript(GenerateSetCallbackErrorCodeScript(2));
 224
 225   InjectElementLibrary();
 226   EXPECT_TRUE(IsLibReady());
 227   EXPECT_FALSE(GetError());
 228   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 229
 230   ExecuteScript(kTranslate);
 231
 232   EXPECT_TRUE(GetError());
 233   EXPECT_EQ(translate::TranslateErrors::UNSUPPORTED_LANGUAGE, GetErrorCode());
 234 }
 235
 236 // TODO(toyoshim): Add test for onLoadJavaScript.