Introduce EditingUtilitiesTest.cpp as a home of nextPositionOf() test

This patch introduces "EditingUtilitiesTest.cpp" as a home of a test for
|nextPositionOf()|.

This patch is a follow up patch of http://crrev.com/1305963003, which
introduce |nextPositionOf()| as replacement of |Position::next()|.

BUG=n/a
TEST=n/a; No behavior changes

Review URL: https://codereview.chromium.org/1308263002

git-svn-id: svn://svn.chromium.org/blink/trunk@201049 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/core.gypi

@@ -3771,6 +3771,7 @@
             'editing/EditingStrategyTest.cpp',
             'editing/EditingTestBase.cpp',
             'editing/EditingTestBase.h',
+            'editing/EditingUtilitiesTest.cpp',
             'editing/FrameSelectionTest.cpp',
             'editing/GranularityStrategyTest.cpp',
             'editing/InputMethodControllerTest.cpp',

third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp

+// Copyright 2015 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 "config.h"
+#include "core/editing/EditingUtilities.h"
+
+#include "core/editing/EditingTestBase.h"
+
+namespace blink {
+
+class EditingUtilitiesTest : public EditingTestBase {
+};
+
+TEST_F(EditingUtilitiesTest, NextNodeIndex)
+{
+    const char* bodyContent = "<p id='host'>00<b id='one'>11</b><b id='two'>22</b>33</p>";
+    const char* shadowContent = "<content select=#two></content><content select=#one></content>";
+    setBodyContent(bodyContent);
+    setShadowContent(shadowContent);
+    Node* host = document().getElementById("host");
+    Node* two = document().getElementById("two");
+
+    EXPECT_EQ(Position(host, 3), nextPositionOf(Position(two, 2), PositionMoveType::CodePoint));
+    EXPECT_EQ(PositionInComposedTree(host, 1), nextPositionOf(PositionInComposedTree(two, 2), PositionMoveType::CodePoint));
+}
+
+} // namespace blink

third_party/WebKit/Source/core/editing/PositionTest.cpp

@@ -6,27 +6,12 @@
 #include "core/editing/Position.h"
 
 #include "core/editing/EditingTestBase.h"
-#include "core/editing/EditingUtilities.h"
 
 namespace blink {
 
 class PositionTest : public EditingTestBase {
 };
 
-// TODO(yoisn) We should move |NextNodeIndex| to "EditingUtilitiesTest.cpp".
-TEST_F(PositionTest, NextNodeIndex)
-{
-    const char* bodyContent = "<p id='host'>00<b id='one'>11</b><b id='two'>22</b>33</p>";
-    const char* shadowContent = "<content select=#two></content><content select=#one></content>";
-    setBodyContent(bodyContent);
-    setShadowContent(shadowContent);
-    Node* host = document().getElementById("host");
-    Node* two = document().getElementById("two");
-
-    EXPECT_EQ(Position(host, 3), nextPositionOf(Position(two, 2), PositionMoveType::CodePoint));
-    EXPECT_EQ(PositionInComposedTree(host, 1), nextPositionOf(PositionInComposedTree(two, 2), PositionMoveType::CodePoint));
-}
-
 TEST_F(PositionTest, NodeAsRangeLastNodeNull)
 {
     EXPECT_EQ(nullptr, Position().nodeAsRangeLastNode());