Tabs Extension: Implementation of tabs.duplicate api.

chrome/browser/extensions/api/tabs/tabs_test.cc

Index: chrome/browser/extensions/api/tabs/tabs_test.cc
===================================================================
--- chrome/browser/extensions/api/tabs/tabs_test.cc	(revision 142698)
+++ chrome/browser/extensions/api/tabs/tabs_test.cc	(working copy)
@@ -547,3 +547,42 @@
           browser()),
       keys::kInvalidWindowStateError));
 }
+
+IN_PROC_BROWSER_TEST_F(ExtensionTabsTest, DuplicateTabNoPermission) {
+  scoped_refptr<CreateTabFunction> create_tab_function(new CreateTabFunction());
+  // Without a callback the function will not generate a result.
+  create_tab_function->set_has_callback(true);
+
+  static const char kNewBlankTabArgs[] =
+      "[{\"url\": \"about:blank\"}]";
+
+  scoped_ptr<base::DictionaryValue> result(utils::ToDictionary(
+      utils::RunFunctionAndReturnResult(
+          create_tab_function.get(),
+          kNewBlankTabArgs,
+          browser())));
+
+  int tab_id = utils::GetInteger(result.get(), "id");
+
+  scoped_refptr<DuplicateTabFunction> duplicate_tab_function(
+      new DuplicateTabFunction());
+  scoped_refptr<extensions::Extension> empty_extension(
+      utils::CreateEmptyExtension());
+  duplicate_tab_function->set_extension(empty_extension.get());
+  // Without a callback the function will not generate a result.
+  duplicate_tab_function->set_has_callback(true);
+
+  scoped_ptr<base::Value> duplicate_result(
+      utils::RunFunctionAndReturnResult(
+          duplicate_tab_function.get(), base::StringPrintf("[%u]", tab_id),
+          browser()));
+
+  int duplicate_tab_id = tab_id;
+  duplicate_result.get()->GetAsInteger(&duplicate_tab_id);
+  // The test empty extension has no permissions, therefore it should get
+  // tab id of TYPE_INTEGER in the function result.
+  EXPECT_EQ(base::Value::TYPE_INTEGER, duplicate_result->GetType());
+  // Duplicate tab id should be different from the original tab id.
+  EXPECT_NE(tab_id, duplicate_tab_id);
+}
+