[LayoutNG] Unit tests for MinAndMaxContentSizes::ShrinkToFit().

third_party/WebKit/Source/core/layout/ng/ng_units.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 "core/layout/ng/ng_writing_mode.h"
 
 namespace blink {
 
 LayoutUnit MinAndMaxContentSizes::ShrinkToFit(LayoutUnit available_size) const {
+  DCHECK_GE(max_content, min_content);
   return std::min(max_content, std::max(min_content, available_size));
 }
 
 NGPhysicalSize NGLogicalSize::ConvertToPhysical(NGWritingMode mode) const {
   return mode == HorizontalTopBottom ? NGPhysicalSize(inline_size, block_size)
                                      : NGPhysicalSize(block_size, inline_size);
 }
 
 bool NGLogicalSize::operator==(const NGLogicalSize& other) const {
   return std::tie(other.inline_size, other.block_size) ==
@@ skipping 197 matching lines @@
 
 bool NGMarginStrut::operator==(const NGMarginStrut& other) const {
   return std::tie(other.margin_block_start, other.margin_block_end,
                   other.negative_margin_block_start,
                   other.negative_margin_block_end) ==
          std::tie(margin_block_start, margin_block_end,
                   negative_margin_block_start, negative_margin_block_end);
 }
 
 }  // namespace blink