Reland of Make InsertTextCommand not to apply style for empty selection

third_party/WebKit/Source/core/editing/commands/InsertTextCommandTest.cpp

+// Copyright (c) 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/editing/commands/InsertTextCommand.h"
+
+#include "core/editing/EditingTestBase.h"
+#include "core/editing/FrameSelection.h"
+
+namespace blink {
+
+class InsertTextCommandTest : public EditingTestBase {};
+
+// http://crbug.com/714311
+TEST_F(InsertTextCommandTest, WithTypingStyle) {
+  SetBodyContent("<div contenteditable=true><option id=sample></option></div>");
+  Element* const sample = GetDocument().getElementById("sample");
+  Selection().SetSelection(
+      SelectionInDOMTree::Builder().Collapse(Position(sample, 0)).Build());
+  // Register typing style to make |InsertTextCommand| to attempt to apply
+  // style to inserted text.
+  GetDocument().execCommand("fontSizeDelta", false, "+3", ASSERT_NO_EXCEPTION);
+  CompositeEditCommand* const command =
+      InsertTextCommand::Create(GetDocument(), "x");
+  command->Apply();
+
+  EXPECT_EQ(
+      "<div contenteditable=\"true\"><option id=\"sample\">x</option></div>",
+      GetDocument().body()->innerHTML())
+      << "Content of OPTION is distributed into shadow node as text"
+         "without applying typing style.";
+}
+
+}  // namespace blink