1 files changed, 55 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/editing/inline_box_position_test.cc b/chromium/third_party/blink/renderer/core/editing/inline_box_position_test.cc
index 222f2d07ca1..f4ad06eea58 100644
--- a/chromium/third_party/blink/renderer/core/editing/inline_box_position_test.cc
+++ b/chromium/third_party/blink/renderer/core/editing/inline_box_position_test.cc
@@ -6,8 +6,10 @@
 
 #include "third_party/blink/renderer/core/editing/position.h"
 #include "third_party/blink/renderer/core/editing/testing/editing_test_base.h"
+#include "third_party/blink/renderer/core/editing/text_affinity.h"
 #include "third_party/blink/renderer/core/layout/layout_box.h"
 #include "third_party/blink/renderer/core/layout/line/inline_text_box.h"
+#include "third_party/blink/renderer/platform/testing/runtime_enabled_features_test_helpers.h"
 
 namespace blink {
 
@@ -23,6 +25,9 @@ std::ostream& operator<<(std::ostream& ostream,
 class InlineBoxPositionTest : public EditingTestBase {};
 
 TEST_F(InlineBoxPositionTest, ComputeInlineBoxPositionBidiIsolate) {
+  // InlineBoxPosition is a legacy-only data structure.
+  ScopedLayoutNGForTest scoped_layout_ng(false);
+
   // "|" is bidi-level 0, and "foo" and "bar" are bidi-level 2
   SetBodyContent(
       "|<span id=sample style='unicode-bidi: isolate;'>foo<br>bar</span>|");
@@ -38,6 +43,9 @@ TEST_F(InlineBoxPositionTest, ComputeInlineBoxPositionBidiIsolate) {
 
 // http://crbug.com/716093
 TEST_F(InlineBoxPositionTest, ComputeInlineBoxPositionMixedEditable) {
+  // InlineBoxPosition is a legacy-only data structure.
+  ScopedLayoutNGForTest scoped_layout_ng(false);
+
   SetBodyContent(
       "<div contenteditable id=sample>abc<input contenteditable=false></div>");
   Element* const sample = GetDocument().getElementById("sample");
@@ -51,6 +59,9 @@ TEST_F(InlineBoxPositionTest, ComputeInlineBoxPositionMixedEditable) {
 
 // http://crbug.com/841363
 TEST_F(InlineBoxPositionTest, InFlatTreeAfterInputWithPlaceholderDoesntCrash) {
+  // InlineBoxPosition is a legacy-only data structure.
+  ScopedLayoutNGForTest scoped_layout_ng(false);
+
   SetBodyContent("foo <input placeholder=bla> bar");
   const Element* const input = GetDocument().QuerySelector("input");
   const LayoutBox* const input_layout = ToLayoutBox(input->GetLayoutObject());
@@ -64,4 +75,48 @@ TEST_F(InlineBoxPositionTest, InFlatTreeAfterInputWithPlaceholderDoesntCrash) {
   EXPECT_EQ(1, box_position.offset_in_box);
 }
 
+TEST_F(InlineBoxPositionTest, DownstreamBeforeLineBreakLTR) {
+  // InlineBoxPosition is a legacy-only data structure.
+  ScopedLayoutNGForTest scoped_layout_ng(false);
+
+  // This test is for a bidi caret afinity specific behavior.
+  ScopedBidiCaretAffinityForTest scoped_bidi_affinity(true);
+
+  SetBodyContent("<div id=div>&#x05D0;&#x05D1;&#x05D2<br>ABC</div>");
+  const Element* const div = GetElementById("div");
+  const Node* const rtl_text = div->firstChild();
+  const PositionWithAffinity before_br(Position(rtl_text, 3),
+                                       TextAffinity::kDownstream);
+
+  const Element* const br = GetDocument().QuerySelector("br");
+  const InlineBox* const box =
+      ToLayoutText(br->GetLayoutObject())->FirstTextBox();
+
+  const InlineBoxPosition box_position = ComputeInlineBoxPosition(before_br);
+  EXPECT_EQ(box, box_position.inline_box);
+  EXPECT_EQ(0, box_position.offset_in_box);
+}
+
+TEST_F(InlineBoxPositionTest, DownstreamBeforeLineBreakRTL) {
+  // InlineBoxPosition is a legacy-only data structure.
+  ScopedLayoutNGForTest scoped_layout_ng(false);
+
+  // This test is for a bidi caret afinity specific behavior.
+  ScopedBidiCaretAffinityForTest scoped_bidi_affinity(true);
+
+  SetBodyContent("<div id=div dir=rtl>ABC<br>&#x05D0;&#x05D1;&#x05D2;</div>");
+  const Element* const div = GetElementById("div");
+  const Node* const rtl_text = div->firstChild();
+  const PositionWithAffinity before_br(Position(rtl_text, 3),
+                                       TextAffinity::kDownstream);
+
+  const Element* const br = GetDocument().QuerySelector("br");
+  const InlineBox* const box =
+      ToLayoutText(br->GetLayoutObject())->FirstTextBox();
+
+  const InlineBoxPosition box_position = ComputeInlineBoxPosition(before_br);
+  EXPECT_EQ(box, box_position.inline_box);
+  EXPECT_EQ(0, box_position.offset_in_box);
+}
+
 }  // namespace blink