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