Utility routines for ng_units

third_party/WebKit/Source/core/layout/ng/ng_units_test.cc

 // Copyright 2016 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/layout/ng/ng_units.h"
 
 #include "platform/text/TextDirection.h"
 #include "core/layout/ng/ng_writing_mode.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 51 matching lines @@
                                             inner_size);
   EXPECT_EQ(LayoutUnit(30), offset.left);
   EXPECT_EQ(LayoutUnit(315), offset.top);
 
   offset = logical_offset.ConvertToPhysical(SidewaysLeftRight, RTL, outer_size,
                                             inner_size);
   EXPECT_EQ(LayoutUnit(30), offset.left);
   EXPECT_EQ(LayoutUnit(20), offset.top);
 }
 
+// Ideally, this would be tested by NGBoxStrut::ConvertToPhysical, but
+// this has not been implemented yet.
+TEST(NGUnitsTest, ConvertPhysicalStrutToLogical) {
+  LayoutUnit left{5}, right{10}, top{15}, bottom{20};
+  NGPhysicalBoxStrut physical{left, right, top, bottom};
+
+  NGBoxStrut logical = physical.ConvertToLogical(HorizontalTopBottom, LTR);
+  EXPECT_EQ(left, logical.inline_start);
+  EXPECT_EQ(top, logical.block_start);
+
+  logical = physical.ConvertToLogical(HorizontalTopBottom, RTL);
+  EXPECT_EQ(right, logical.inline_start);
+  EXPECT_EQ(top, logical.block_start);
+
+  logical = physical.ConvertToLogical(VerticalLeftRight, LTR);
+  EXPECT_EQ(top, logical.inline_start);
+  EXPECT_EQ(left, logical.block_start);
+
+  logical = physical.ConvertToLogical(VerticalLeftRight, RTL);
+  EXPECT_EQ(bottom, logical.inline_start);
+  EXPECT_EQ(left, logical.block_start);
+
+  logical = physical.ConvertToLogical(VerticalRightLeft, LTR);
+  EXPECT_EQ(top, logical.inline_start);
+  EXPECT_EQ(right, logical.block_start);
+
+  logical = physical.ConvertToLogical(VerticalRightLeft, RTL);
+  EXPECT_EQ(bottom, logical.inline_start);
+  EXPECT_EQ(right, logical.block_start);
+}
+
 }  // namespace
 
 }  // namespace blink