[layoutng] Margin support, part 1

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

Index: third_party/WebKit/Source/core/layout/ng/ng_length_utils_test.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_length_utils_test.cc b/third_party/WebKit/Source/core/layout/ng/ng_length_utils_test.cc
index f65529e501601baf1dfbfce8ef21eecb7cb517e3..93ea4e504dcdbcc954206d042dd9b3d8c221dcf1 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_length_utils_test.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_length_utils_test.cc
@@ -5,6 +5,7 @@
 #include "core/layout/ng/ng_length_utils.h"
 
 #include "core/layout/ng/ng_constraint_space.h"
+#include "core/layout/ng/ng_margin_strut.h"
 #include "core/style/ComputedStyle.h"
 #include "platform/CalculationValue.h"
 #include "platform/LayoutUnit.h"
@@ -158,5 +159,21 @@ TEST_F(NGLengthUtilsTest, testComputeBlockSizeForFragment) {
   // TODO(layout-ng): test {min,max}-content on max-height.
 }
 
+TEST_F(NGLengthUtilsTest, testMargins) {
+  style_->setMarginTop(Length(10, Percent));
+  style_->setMarginRight(Length(52, Fixed));
+  style_->setMarginBottom(Length(Auto));
+  style_->setMarginLeft(Length(11, Percent));
+
+  NGConstraintSpace constraintSpace(constructConstraintSpace(200, 300));
+
+  NGBoxMargins margins = computeMargins(constraintSpace, *style_);
+
+  EXPECT_EQ(LayoutUnit(20), margins.blockStart);
+  EXPECT_EQ(LayoutUnit(52), margins.inlineEnd);
+  EXPECT_EQ(LayoutUnit(), margins.blockEnd);
+  EXPECT_EQ(LayoutUnit(22), margins.inlineStart);
+}
+
 }  // namespace
 }  // namespace blink