Create unit tests of ScriptLoader

third_party/WebKit/Source/core/dom/ScriptLoaderTest.cpp

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/dom/ScriptLoader.h"
+
+#include "core/dom/MockScriptElementBase.h"
+#include "core/frame/Settings.h"
+#include "core/testing/DummyPageHolder.h"
+#include "platform/testing/URLTestHelpers.h"
+#include "platform/testing/UnitTestHelpers.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebURLLoaderMockFactory.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+namespace {}
+
+using ::testing::Return;
+
+class ScriptLoaderTest : public ::testing::Test {
+ public:
+  ScriptLoaderTest()
+      : dummy_page_holder_(DummyPageHolder::Create(IntSize(800, 600))) {}
+
+  Document& GetDocument() const { return dummy_page_holder_->GetDocument(); }
+
+ private:
+  std::unique_ptr<DummyPageHolder> dummy_page_holder_;
+};
+
+TEST_F(ScriptLoaderTest, ClassicParserInsertedDeferScript) {
+  MockScriptElementBase* element = MockScriptElementBase::Create();
+
+  EXPECT_CALL(*element, GetDocumentPointer())
+      .WillRepeatedly(Return(&GetDocument()));
+
+  ScriptLoader* script_loader =
+      ScriptLoader::Create(element, true, false, false);
+
+  KURL script_url(kParsedURLString, "http://example.com/test.js");
+
+  URLTestHelpers::RegisterMockedURLLoad(
+      script_url, testing::WebTestDataPath("touch-action-tests.js"),
+      "text/javascript");
+
+  EXPECT_CALL(*element, IsConnected()).WillRepeatedly(Return(true));
+  EXPECT_CALL(*element, TypeAttributeValue()).WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, LanguageAttributeValue())
+      .WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, AsyncAttributeValue()).WillRepeatedly(Return(false));
+  EXPECT_CALL(*element, DeferAttributeValue()).WillRepeatedly(Return(true));
+  EXPECT_CALL(*element, HasSourceAttribute()).WillRepeatedly(Return(true));
+  EXPECT_CALL(*element, SourceAttributeValue())
+      .WillRepeatedly(Return("test.js"));
+  EXPECT_CALL(*element, NomoduleAttributeValue()).WillRepeatedly(Return(false));
+  EXPECT_CALL(*element, EventAttributeValue()).WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, ForAttributeValue()).WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, CrossOriginAttributeValue())
+      .WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, IsNonceableElement()).WillRepeatedly(Return(false));
+  EXPECT_CALL(*element, CharsetAttributeValue())
+      .WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, IntegrityAttributeValue())
+      .WillRepeatedly(Return(String()));
+  EXPECT_CALL(*element, InitiatorName())
+      .WillRepeatedly(Return("TestInitiatorName"));
+
+  // Set CanExecuteScript() to true.
+  GetDocument().GetFrame()->GetPage()->GetSettings().SetScriptEnabled(true);
+
+  // Make CompleteURL() to work.
+  GetDocument().SetURL(KURL(kParsedURLString, "http://example.com/"));
+
+  // Hits 1st Clause, Step 23 of "prepare a script".
+  EXPECT_TRUE(script_loader->PrepareScript());
+  EXPECT_TRUE(script_loader->WillBeParserExecuted());
+  EXPECT_TRUE(script_loader->AlreadyStarted());
+  EXPECT_FALSE(script_loader->ReadyToBeParserExecuted());
+  EXPECT_EQ(ScriptType::kClassic, script_loader->GetScriptType());
+
+  // Following logic is implemented in HTMLParserScriptRunner and is not
+  // tested here.
+
+  // Platform::Current()->GetURLLoaderMockFactory()->ServeAsynchronousRequests();
+}
+
+}  // namespace blink