toolkit/modules/tests/browser/browser_Geometry.js

branch
TOR_BUG_3246
changeset 7
129ffea94266
equal deleted inserted replaced
-1:000000000000 0:a6a81cbc89b5
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 let tempScope = {};
6 Components.utils.import("resource://gre/modules/Geometry.jsm", tempScope);
7 let Point = tempScope.Point;
8 let Rect = tempScope.Rect;
9
10 function test() {
11 ok(Rect, "Rect class exists");
12 for (var fname in tests) {
13 tests[fname]();
14 }
15 }
16
17 let tests = {
18 testGetDimensions: function() {
19 let r = new Rect(5, 10, 100, 50);
20 ok(r.left == 5, "rect has correct left value");
21 ok(r.top == 10, "rect has correct top value");
22 ok(r.right == 105, "rect has correct right value");
23 ok(r.bottom == 60, "rect has correct bottom value");
24 ok(r.width == 100, "rect has correct width value");
25 ok(r.height == 50, "rect has correct height value");
26 ok(r.x == 5, "rect has correct x value");
27 ok(r.y == 10, "rect has correct y value");
28 },
29
30 testIsEmpty: function() {
31 let r = new Rect(0, 0, 0, 10);
32 ok(r.isEmpty(), "rect with nonpositive width is empty");
33 let r = new Rect(0, 0, 10, 0);
34 ok(r.isEmpty(), "rect with nonpositive height is empty");
35 let r = new Rect(0, 0, 10, 10);
36 ok(!r.isEmpty(), "rect with positive dimensions is not empty");
37 },
38
39 testRestrictTo: function() {
40 let r1 = new Rect(10, 10, 100, 100);
41 let r2 = new Rect(50, 50, 100, 100);
42 r1.restrictTo(r2);
43 ok(r1.equals(new Rect(50, 50, 60, 60)), "intersection is non-empty");
44
45 let r1 = new Rect(10, 10, 100, 100);
46 let r2 = new Rect(120, 120, 100, 100);
47 r1.restrictTo(r2);
48 ok(r1.isEmpty(), "intersection is empty");
49
50 let r1 = new Rect(10, 10, 100, 100);
51 let r2 = new Rect(0, 0, 0, 0);
52 r1.restrictTo(r2);
53 ok(r1.isEmpty(), "intersection of rect and empty is empty");
54
55 let r1 = new Rect(0, 0, 0, 0);
56 let r2 = new Rect(0, 0, 0, 0);
57 r1.restrictTo(r2);
58 ok(r1.isEmpty(), "intersection of empty and empty is empty");
59 },
60
61 testExpandToContain: function() {
62 let r1 = new Rect(10, 10, 100, 100);
63 let r2 = new Rect(50, 50, 100, 100);
64 r1.expandToContain(r2);
65 ok(r1.equals(new Rect(10, 10, 140, 140)), "correct expandToContain on intersecting rectangles");
66
67 let r1 = new Rect(10, 10, 100, 100);
68 let r2 = new Rect(120, 120, 100, 100);
69 r1.expandToContain(r2);
70 ok(r1.equals(new Rect(10, 10, 210, 210)), "correct expandToContain on non-intersecting rectangles");
71
72 let r1 = new Rect(10, 10, 100, 100);
73 let r2 = new Rect(0, 0, 0, 0);
74 r1.expandToContain(r2);
75 ok(r1.equals(new Rect(10, 10, 100, 100)), "expandToContain of rect and empty is rect");
76
77 let r1 = new Rect(10, 10, 0, 0);
78 let r2 = new Rect(0, 0, 0, 0);
79 r1.expandToContain(r2);
80 ok(r1.isEmpty(), "expandToContain of empty and empty is empty");
81 },
82
83 testSubtract: function testSubtract() {
84 function equals(rects1, rects2) {
85 return rects1.length == rects2.length && rects1.every(function(r, i) {
86 return r.equals(rects2[i]);
87 });
88 }
89
90 let r1 = new Rect(0, 0, 100, 100);
91 let r2 = new Rect(500, 500, 100, 100);
92 ok(equals(r1.subtract(r2), [r1]), "subtract area outside of region yields same region");
93
94 let r1 = new Rect(0, 0, 100, 100);
95 let r2 = new Rect(-10, -10, 50, 120);
96 ok(equals(r1.subtract(r2), [new Rect(40, 0, 60, 100)]), "subtracting vertical bar from edge leaves one rect");
97
98 let r1 = new Rect(0, 0, 100, 100);
99 let r2 = new Rect(-10, -10, 120, 50);
100 ok(equals(r1.subtract(r2), [new Rect(0, 40, 100, 60)]), "subtracting horizontal bar from edge leaves one rect");
101
102 let r1 = new Rect(0, 0, 100, 100);
103 let r2 = new Rect(40, 40, 20, 20);
104 ok(equals(r1.subtract(r2), [
105 new Rect(0, 0, 40, 100),
106 new Rect(40, 0, 20, 40),
107 new Rect(40, 60, 20, 40),
108 new Rect(60, 0, 40, 100)]),
109 "subtracting rect in middle leaves union of rects");
110 },
111 };

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