Restore a collapsed leading space of text used for line break

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

 // Copyright 2014 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/FrameSelection.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Text.h"
@@ skipping 193 matching lines @@
     // Select "two" for selection in DOM tree
     // Select "twoone" for selection in Flat tree
     selection().setSelection(VisibleSelectionInFlatTree(PositionInFlatTree(host, 0), PositionInFlatTree(document().body(), 2)));
     selection().modify(FrameSelection::AlterationExtend, DirectionForward, WordGranularity);
     EXPECT_EQ(Position(two, 0), visibleSelectionInDOMTree().start());
     EXPECT_EQ(Position(two, 3), visibleSelectionInDOMTree().end());
     EXPECT_EQ(PositionInFlatTree(two, 0), visibleSelectionInFlatTree().start());
     EXPECT_EQ(PositionInFlatTree(two, 3), visibleSelectionInFlatTree().end());
 }
 
+TEST_F(FrameSelectionTest, PreserveLeadingSpaceWhenCopySelection)
+{
+    setBodyContent("<div id='sample' style='width: 2em;'><b><i>foo</i></b> bar</div>");
+    Element* sample = document().getElementById("sample");
+    VisibleSelection validSelection(Position(sample->firstChild()->firstChild()->firstChild(), 0), Position(sample->lastChild(), 4));

[yosin_UTC9, 2016/09/14 05:13:52]

Please use |plainText()| instead of |FrameSelection::selectedHTMLForClipboard()|
which calls |plainText()| in |StyledMarkupAccumulator::renderedText()| to narrow
test target.

[joone, 2016/09/14 07:09:13]

Done.

+    setSelection(validSelection);
+    EXPECT_EQ("<b style=\"color: rgb(0, 0, 0); font-family: &quot;&quot;; font-size: medium; font-style: normal; font-variant-ligatures: normal; "
+        "font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: "
+        "normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;\">"
+        "<i>foo</i></b><span style=\"color: rgb(0, 0, 0); font-family: &quot;&quot;; font-size: medium; font-style: normal; font-variant-ligatures: "
+        "normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; "
+        "white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; "
+        "display: inline !important; float: none;\"><span class=\"Apple-converted-space\">\xC2\xA0</span>bar</span>", WebString(selection().selectedHTMLForClipboard()).utf8())
+        << "The markup of the selection is different";
+}
+
 TEST_F(FrameSelectionTest, ModifyWithUserTriggered)
 {
     setBodyContent("<div id=sample>abc</div>");
     Element* sample = document().getElementById("sample");
     const Position endOfText(sample->firstChild(), 3);
     selection().setSelection(VisibleSelection(endOfText));
 
     EXPECT_FALSE(selection().modify(FrameSelection::AlterationMove, DirectionForward, CharacterGranularity, NotUserTriggered))
         << "Selection.modify() returns false for non-user-triggered call when selection isn't modified.";
     EXPECT_EQ(endOfText, selection().start())
@@ skipping 87 matching lines @@
     selection().updateIfNeeded();
 
     // TODO(yosin): Once lazy canonicalization implemented, selection.start
     // should be Position(HTML, 0).
     EXPECT_EQ(Position(), selection().start())
         << "updateIfNeeded() makes selection to null.";
     EXPECT_EQ(selection().start(), caretPosition().position());
 }
 
 } // namespace blink