The Tor Browser: gfx/tests/gtest/TestRect.cpp@b8a032363ba2 (annotated)

gfx/tests/gtest/TestRect.cpp@b8a032363ba2 (annotated)

gfx/tests/gtest/TestRect.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "gtest/gtest.h"
 #include "nsRect.h"
 #include "gfxRect.h"
 #ifdef XP_WIN
 #include <windows.h>
 #endif
 template <class RectType>
 static bool
 TestConstructors()
 {
   // Create a rectangle
   RectType  rect1(10, 20, 30, 40);
   // Make sure the rectangle was properly initialized
   EXPECT_TRUE(rect1.x == 10 && rect1.y == 20 &&
       rect1.width == 30 && rect1.height == 40) <<
     "[1] Make sure the rectangle was properly initialized with constructor";
   // Create a second rect using the copy constructor
   RectType  rect2(rect1);
   // Make sure the rectangle was properly initialized
   EXPECT_TRUE(rect2.x == rect1.x && rect2.y == rect2.y &&
       rect2.width == rect2.width && rect2.height == rect2.height) <<
     "[2] Make sure the rectangle was properly initialized with copy constructor";
   EXPECT_TRUE(!rect1.IsEmpty() && rect1.IsFinite() &&
       !rect2.IsEmpty() && rect2.IsFinite()) <<
     "[3] These rectangles are not empty and are finite";
   return true;
 }
 template <class RectType>
 static bool
 TestEqualityOperator()
 {
   RectType  rect1(10, 20, 30, 40);
   RectType  rect2(rect1);
   // Test the equality operator
   EXPECT_TRUE(rect1 == rect2) <<
     "[1] Test the equality operator";
   EXPECT_FALSE(!rect1.IsEqualInterior(rect2)) <<
     "[2] Test the inequality operator";
   // Make sure that two empty rects are equal
   rect1.SetEmpty();
   rect2.SetEmpty();
   EXPECT_TRUE(rect1 == rect2) <<
     "[3] Make sure that two empty rects are equal";
   return true;
 }
 template <class RectType>
 static bool
 TestContainment()
 {
   RectType  rect1(10, 10, 50, 50);
   // Test the point containment methods
   //
   // Basic test of a point in the middle of the rect
   EXPECT_FALSE(!rect1.Contains(rect1.x + rect1.width/2, rect1.y + rect1.height/2)) <<
     "[1] Basic test of a point in the middle of the rect";
   // Test against a point at the left/top edges
   EXPECT_FALSE(!rect1.Contains(rect1.x, rect1.y)) <<
     "[2] Test against a point at the left/top edges";
   // Test against a point at the right/bottom extents
   EXPECT_FALSE(rect1.Contains(rect1.XMost(), rect1.YMost())) <<
     "[3] Test against a point at the right/bottom extents";
   // Test the rect containment methods
   //
   RectType  rect2(rect1);
   // Test against a rect that's the same as rect1
   EXPECT_FALSE(!rect1.Contains(rect2)) <<
     "[4] Test against a rect that's the same as rect1";
   // Test against a rect whose left edge (only) is outside of rect1
   rect2.x--;
   EXPECT_FALSE(rect1.Contains(rect2)) <<
     "[5] Test against a rect whose left edge (only) is outside of rect1";
   rect2.x++;
   // Test against a rect whose top edge (only) is outside of rect1
   rect2.y--;
   EXPECT_FALSE(rect1.Contains(rect2)) <<
     "[6] Test against a rect whose top edge (only) is outside of rect1";
   rect2.y++;
   // Test against a rect whose right edge (only) is outside of rect1
   rect2.x++;
   EXPECT_FALSE(rect1.Contains(rect2)) <<
     "[7] Test against a rect whose right edge (only) is outside of rect1";
   rect2.x--;
   // Test against a rect whose bottom edge (only) is outside of rect1
   rect2.y++;
   EXPECT_FALSE(rect1.Contains(rect2)) <<
     "[8] Test against a rect whose bottom edge (only) is outside of rect1";
   rect2.y--;
   return true;
 }
 // Test the method that returns a boolean result but doesn't return a
 // a rectangle
 template <class RectType>
 static bool
 TestIntersects()
 {
   RectType  rect1(10, 10, 50, 50);
   RectType  rect2(rect1);
   // Test against a rect that's the same as rect1
   EXPECT_FALSE(!rect1.Intersects(rect2)) <<
     "[1] Test against a rect that's the same as rect1";
   // Test against a rect that's enclosed by rect1
   rect2.Inflate(-1, -1);
   EXPECT_FALSE(!rect1.Contains(rect2) || !rect1.Intersects(rect2)) <<
     "[2] Test against a rect that's enclosed by rect1";
   rect2.Inflate(1, 1);
   // Make sure inflate and deflate worked correctly
   EXPECT_TRUE(rect1.IsEqualInterior(rect2)) <<
     "[3] Make sure inflate and deflate worked correctly";
   // Test against a rect that overlaps the left edge of rect1
   rect2.x--;
   EXPECT_FALSE(!rect1.Intersects(rect2)) <<
     "[4] Test against a rect that overlaps the left edge of rect1";
   rect2.x++;
   // Test against a rect that's outside of rect1 on the left
   rect2.x -= rect2.width;
   EXPECT_FALSE(rect1.Intersects(rect2)) <<
     "[5] Test against a rect that's outside of rect1 on the left";
   rect2.x += rect2.width;
   // Test against a rect that overlaps the top edge of rect1
   rect2.y--;
   EXPECT_FALSE(!rect1.Intersects(rect2)) <<
     "[6] Test against a rect that overlaps the top edge of rect1";
   rect2.y++;
   // Test against a rect that's outside of rect1 on the top
   rect2.y -= rect2.height;
   EXPECT_FALSE(rect1.Intersects(rect2)) <<
     "[7] Test against a rect that's outside of rect1 on the top";
   rect2.y += rect2.height;
   // Test against a rect that overlaps the right edge of rect1
   rect2.x++;
   EXPECT_FALSE(!rect1.Intersects(rect2)) <<
     "[8] Test against a rect that overlaps the right edge of rect1";
   rect2.x--;
   // Test against a rect that's outside of rect1 on the right
   rect2.x += rect2.width;
   EXPECT_FALSE(rect1.Intersects(rect2)) <<
     "[9] Test against a rect that's outside of rect1 on the right";
   rect2.x -= rect2.width;
   // Test against a rect that overlaps the bottom edge of rect1
   rect2.y++;
   EXPECT_FALSE(!rect1.Intersects(rect2)) <<
     "[10] Test against a rect that overlaps the bottom edge of rect1";
   rect2.y--;
   // Test against a rect that's outside of rect1 on the bottom
   rect2.y += rect2.height;
   EXPECT_FALSE(rect1.Intersects(rect2)) <<
     "[11] Test against a rect that's outside of rect1 on the bottom";
   rect2.y -= rect2.height;
   return true;
 }
 // Test the method that returns a boolean result and an intersection rect
 template <class RectType>
 static bool
 TestIntersection()
 {
   RectType  rect1(10, 10, 50, 50);
   RectType  rect2(rect1);
   RectType  dest;
   // Test against a rect that's the same as rect1
   EXPECT_FALSE(!dest.IntersectRect(rect1, rect2) || !(dest.IsEqualInterior(rect1))) <<
     "[1] Test against a rect that's the same as rect1";
   // Test against a rect that's enclosed by rect1
   rect2.Inflate(-1, -1);
   EXPECT_FALSE(!dest.IntersectRect(rect1, rect2) || !(dest.IsEqualInterior(rect2))) <<
     "[2] Test against a rect that's enclosed by rect1";
   rect2.Inflate(1, 1);
   // Test against a rect that overlaps the left edge of rect1
   rect2.x--;
   EXPECT_FALSE(!dest.IntersectRect(rect1, rect2) ||
      !(dest.IsEqualInterior(RectType(rect1.x, rect1.y, rect1.width - 1, rect1.height)))) <<
     "[3] Test against a rect that overlaps the left edge of rect1";
   rect2.x++;
   // Test against a rect that's outside of rect1 on the left
   rect2.x -= rect2.width;
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2)) <<
     "[4] Test against a rect that's outside of rect1 on the left";
   // Make sure an empty rect is returned
   EXPECT_FALSE(!dest.IsEmpty()) <<
     "[4] Make sure an empty rect is returned";
   EXPECT_TRUE(dest.IsFinite()) << "[4b] Should be finite";
   rect2.x += rect2.width;
   // Test against a rect that overlaps the top edge of rect1
   rect2.y--;
   EXPECT_FALSE(!dest.IntersectRect(rect1, rect2) ||
      !(dest.IsEqualInterior(RectType(rect1.x, rect1.y, rect1.width, rect1.height - 1)))) <<
     "[5] Test against a rect that overlaps the top edge of rect1";
   EXPECT_TRUE(dest.IsFinite()) << "[5b] Should be finite";
   rect2.y++;
   // Test against a rect that's outside of rect1 on the top
   rect2.y -= rect2.height;
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2)) <<
     "[6] Test against a rect that's outside of rect1 on the top";
   // Make sure an empty rect is returned
   EXPECT_FALSE(!dest.IsEmpty()) <<
     "[6] Make sure an empty rect is returned";
   EXPECT_TRUE(dest.IsFinite()) << "[6b] Should be finite";
   rect2.y += rect2.height;
   // Test against a rect that overlaps the right edge of rect1
   rect2.x++;
   EXPECT_FALSE(!dest.IntersectRect(rect1, rect2) ||
      !(dest.IsEqualInterior(RectType(rect1.x + 1, rect1.y, rect1.width - 1, rect1.height)))) <<
     "[7] Test against a rect that overlaps the right edge of rect1";
   rect2.x--;
   // Test against a rect that's outside of rect1 on the right
   rect2.x += rect2.width;
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2)) <<
     "[8] Test against a rect that's outside of rect1 on the right";
   // Make sure an empty rect is returned
   EXPECT_FALSE(!dest.IsEmpty()) <<
     "[8] Make sure an empty rect is returned";
   EXPECT_TRUE(dest.IsFinite()) << "[8b] Should be finite";
   rect2.x -= rect2.width;
   // Test against a rect that overlaps the bottom edge of rect1
   rect2.y++;
   EXPECT_FALSE(!dest.IntersectRect(rect1, rect2) ||
      !(dest.IsEqualInterior(RectType(rect1.x, rect1.y + 1, rect1.width, rect1.height - 1)))) <<
     "[9] Test against a rect that overlaps the bottom edge of rect1";
   EXPECT_TRUE(dest.IsFinite()) << "[9b] Should be finite";
   rect2.y--;
   // Test against a rect that's outside of rect1 on the bottom
   rect2.y += rect2.height;
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2)) <<
     "[10] Test against a rect that's outside of rect1 on the bottom";
   // Make sure an empty rect is returned
   EXPECT_FALSE(!dest.IsEmpty()) <<
     "[10] Make sure an empty rect is returned";
   EXPECT_TRUE(dest.IsFinite()) << "[10b] Should be finite";
   rect2.y -= rect2.height;
   // Test against a rect with zero width or height
   rect1.SetRect(100, 100, 100, 100);
   rect2.SetRect(150, 100, 0, 100);
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2) || !dest.IsEmpty()) <<
     "[11] Intersection of rects with zero width or height should be empty";
   EXPECT_TRUE(dest.IsFinite()) << "[11b] Should be finite";
   // Tests against a rect with negative width or height
   //
   // Test against a rect with negative width
   rect1.SetRect(100, 100, 100, 100);
   rect2.SetRect(100, 100, -100, 100);
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2) || !dest.IsEmpty()) <<
     "[12] Intersection of rects with negative width or height should be empty";
   EXPECT_TRUE(dest.IsFinite()) << "[12b] Should be finite";
   // Those two rects exactly overlap in some way...
   // but we still want to return an empty rect
   rect1.SetRect(100, 100, 100, 100);
   rect2.SetRect(200, 200, -100, -100);
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2) || !dest.IsEmpty()) <<
     "[13] Intersection of rects with negative width or height should be empty";
   EXPECT_TRUE(dest.IsFinite()) << "[13b] Should be finite";
   // Test against two identical rects with negative height
   rect1.SetRect(100, 100, 100, -100);
   rect2.SetRect(100, 100, 100, -100);
   EXPECT_FALSE(dest.IntersectRect(rect1, rect2) || !dest.IsEmpty()) <<
     "[14] Intersection of rects with negative width or height should be empty";
   EXPECT_TRUE(dest.IsFinite()) << "[14b] Should be finite";
   return true;
 }
 template <class RectType>
 static bool
 TestUnion()
 {
   RectType  rect1;
   RectType  rect2(10, 10, 50, 50);
   RectType  dest;
   // Check the case where the receiver is an empty rect
   rect1.SetEmpty();
   dest.UnionRect(rect1, rect2);
   EXPECT_FALSE(dest.IsEmpty() || !dest.IsEqualInterior(rect2)) <<
     "[1] Check the case where the receiver is an empty rect";
   EXPECT_TRUE(dest.IsFinite()) << "[1b] Should be finite";
   // Check the case where the source rect is an empty rect
   rect1 = rect2;
   rect2.SetEmpty();
   dest.UnionRect(rect1, rect2);
   EXPECT_FALSE(dest.IsEmpty() || !dest.IsEqualInterior(rect1)) <<
     "[2] Check the case where the source rect is an empty rect";
   EXPECT_TRUE(dest.IsFinite()) << "[2b] Should be finite";
   // Test the case where both rects are empty
   rect1.SetEmpty();
   rect2.SetEmpty();
   dest.UnionRect(rect1, rect2);
   EXPECT_FALSE(!dest.IsEmpty()) <<
     "[3] Test the case where both rects are empty";
   EXPECT_TRUE(dest.IsFinite()) << "[3b] Should be finite";
   // Test union case where the two rects don't overlap at all
   rect1.SetRect(10, 10, 50, 50);
   rect2.SetRect(100, 100, 50, 50);
   dest.UnionRect(rect1, rect2);
   EXPECT_FALSE(dest.IsEmpty() ||
      !(dest.IsEqualInterior(RectType(rect1.x, rect1.y, rect2.XMost() - rect1.x, rect2.YMost() - rect1.y)))) <<
     "[4] Test union case where the two rects don't overlap at all";
   EXPECT_TRUE(dest.IsFinite()) << "[4b] Should be finite";
   // Test union case where the two rects overlap
   rect1.SetRect(30, 30, 50, 50);
   rect2.SetRect(10, 10, 50, 50);
   dest.UnionRect(rect1, rect2);
   EXPECT_FALSE(dest.IsEmpty() ||
       !(dest.IsEqualInterior(RectType(rect2.x, rect2.y, rect1.XMost() - rect2.x, rect1.YMost() - rect2.y)))) <<
     "[5] Test union case where the two rects overlap";
   EXPECT_TRUE(dest.IsFinite()) << "[5b] Should be finite";
   return true;
 }
 static bool
 TestFiniteGfx()
 {
   // Doesn't appear that __builtin_inf() and __builtin_nan() are available on
   // all compilers, so go the old fashioned way for inf and nan.
   float posInf = 1.0/0.0;
   float negInf = -1.0/0.0;
   float justNaN = 0.0/0.0;
   gfxFloat values[4] = {5.0, 10.0, 15.0, 20.0};
   // Try the "non-finite" values for x, y, width, height, one at a time
   for (int i=0; i<4; i+=1) {
     values[i] = posInf;
     gfxRect rectPosInf(values[0], values[1], values[2], values[3]);
     EXPECT_FALSE(rectPosInf.IsFinite()) << "For +inf (" << values[0] << "," << values[1] << "," << values[2] << "," << values[3] << ")";
     values[i] = negInf;
     gfxRect rectNegInf(values[0], values[1], values[2], values[3]);
     EXPECT_FALSE(rectNegInf.IsFinite()) << "For -inf (" << values[0] << "," << values[1] << "," << values[2] << "," << values[3] << ")";
     values[i] = justNaN;
     gfxRect rectNaN(values[0], values[1], values[2], values[3]);
     EXPECT_FALSE(rectNaN.IsFinite()) << "For NaN (" << values[0] << "," << values[1] << "," << values[2] << "," << values[3] << ")";
     // Reset to a finite value...
     values[i] = 5.0*i;
   }
   return true;
 }
 TEST(Gfx, nsRect) {
   TestConstructors<nsRect>();
   TestEqualityOperator<nsRect>();
   TestContainment<nsRect>();
   TestIntersects<nsRect>();
   TestIntersection<nsRect>();
   TestUnion<nsRect>();
 }
 TEST(Gfx, nsIntRect) {
   TestConstructors<nsIntRect>();
   TestEqualityOperator<nsIntRect>();
   TestContainment<nsIntRect>();
   TestIntersects<nsIntRect>();
   TestIntersection<nsIntRect>();
   TestUnion<nsIntRect>();
 }
 TEST(Gfx, gfxRect) {
   TestConstructors<gfxRect>();
   // Skip TestEqualityOperator<gfxRect>(); as gfxRect::operator== is private
   TestContainment<gfxRect>();
   TestIntersects<gfxRect>();
   TestIntersection<gfxRect>();
   TestUnion<gfxRect>();
   TestFiniteGfx();
 }

The Tor Browser / annotate

gfx/tests/gtest/TestRect.cpp@b8a032363ba2 (annotated)

gfx/tests/gtest/TestRect.cpp