[EXPERIMENT] MacViews: Implement Tab Dragging

ui/gfx/geometry/rect_unittest.cc

 // Copyright (c) 2013 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 <limits>
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 897 matching lines @@
   EXPECT_FLOAT_EQ(
       0.0f, f.ManhattanInternalDistance(gfx::RectF(-1.0f, 0.0f, 1.1f, 1.0f)));
   EXPECT_FLOAT_EQ(
       0.1f + kEpsilon,
       f.ManhattanInternalDistance(gfx::RectF(-1.5f, 0.0f, 1.4f, 1.0f)));
   EXPECT_FLOAT_EQ(
       kEpsilon,
       f.ManhattanInternalDistance(gfx::RectF(-1.5f, 0.0f, 1.5f, 1.0f)));
 }
 
+TEST(RectTest, ConstrainToEnclosingRect) {
+  Rect r(10, 10, 10, 10);
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(15, 15)), Point(15, 15));
+
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(15, 0)), Point(15, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(15, 30)), Point(15, 20));
+
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(0, 15)), Point(10, 15));
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(30, 15)), Point(20, 15));
+
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(0, 0)), Point(10, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(0, 30)), Point(10, 20));
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(30, 0)), Point(20, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(r, Point(30, 30)), Point(20, 20));
+
+  Rect empty(10, 10, 0, 0);
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(15, 15)), Point(10, 10));
+
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(15, 0)), Point(10, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(15, 30)), Point(10, 10));
+
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(0, 15)), Point(10, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(30, 15)), Point(10, 10));
+
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(0, 0)), Point(10, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(0, 30)), Point(10, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(30, 0)), Point(10, 10));
+  EXPECT_EQ(ConstrainToEnclosingRect(empty, Point(30, 30)), Point(10, 10));
+}
+
 }  // namespace gfx