Add platform/geometry pretty printers for logging and testing

third_party/WebKit/Source/platform/LayoutUnitTest.cpp

 /*
  * Copyright (c) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 253 matching lines @@
 
     LayoutUnit negativeMax;
     negativeMax.setRawValue(LayoutUnit::min().rawValue() + 1);
     EXPECT_EQ(negativeMax, -LayoutUnit::max());
     EXPECT_EQ(LayoutUnit::max(), -negativeMax);
 
     // -LayoutUnit::min() is saturated to LayoutUnit::max()
     EXPECT_EQ(LayoutUnit::max(), -LayoutUnit::min());
 }
 
+TEST(LayoutUnitTest, Formatting)
+{
+    LayoutUnit zero;
+    std::ostringstream zeroStream;
+    zeroStream << zero;
+    EXPECT_EQ("0", zeroStream.str());
+
+    std::ostringstream maxStream;
+    maxStream << LayoutUnit::max();
+    EXPECT_EQ("LayoutUnit::max(3.35544e+07)", maxStream.str());
+
+    std::ostringstream minStream;
+    minStream << LayoutUnit::min();
+    EXPECT_EQ("LayoutUnit::min(-3.35544e+07)", minStream.str());
+
+    std::ostringstream nearlyMaxStream;
+    nearlyMaxStream << LayoutUnit::nearlyMax();
+    EXPECT_EQ("LayoutUnit::nearlyMax(3.35544e+07)", nearlyMaxStream.str());
+
+    std::ostringstream nearlyMinStream;
+    nearlyMinStream << LayoutUnit::nearlyMin();
+    EXPECT_EQ("LayoutUnit::nearlyMin(-3.35544e+07)", nearlyMinStream.str());
+}
+
 } // namespace blink