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Test Info:
/* 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
const { Point, Rect } = ChromeUtils.importESModule(
);
function test() {
ok(Rect, "Rect class exists");
for (var fname in tests) {
tests[fname]();
}
}
var tests = {
testGetDimensions() {
let r = new Rect(5, 10, 100, 50);
Assert.equal(r.left, 5, "rect has correct left value");
Assert.equal(r.top, 10, "rect has correct top value");
Assert.equal(r.right, 105, "rect has correct right value");
Assert.equal(r.bottom, 60, "rect has correct bottom value");
Assert.equal(r.width, 100, "rect has correct width value");
Assert.equal(r.height, 50, "rect has correct height value");
Assert.equal(r.x, 5, "rect has correct x value");
Assert.equal(r.y, 10, "rect has correct y value");
},
testIsEmpty() {
let r = new Rect(0, 0, 0, 10);
ok(r.isEmpty(), "rect with nonpositive width is empty");
r = new Rect(0, 0, 10, 0);
ok(r.isEmpty(), "rect with nonpositive height is empty");
r = new Rect(0, 0, 10, 10);
ok(!r.isEmpty(), "rect with positive dimensions is not empty");
},
testRestrictTo() {
let r1 = new Rect(10, 10, 100, 100);
let r2 = new Rect(50, 50, 100, 100);
r1.restrictTo(r2);
ok(r1.equals(new Rect(50, 50, 60, 60)), "intersection is non-empty");
r1 = new Rect(10, 10, 100, 100);
r2 = new Rect(120, 120, 100, 100);
r1.restrictTo(r2);
ok(r1.isEmpty(), "intersection is empty");
r1 = new Rect(10, 10, 100, 100);
r2 = new Rect(0, 0, 0, 0);
r1.restrictTo(r2);
ok(r1.isEmpty(), "intersection of rect and empty is empty");
r1 = new Rect(0, 0, 0, 0);
r2 = new Rect(0, 0, 0, 0);
r1.restrictTo(r2);
ok(r1.isEmpty(), "intersection of empty and empty is empty");
},
testExpandToContain() {
let r1 = new Rect(10, 10, 100, 100);
let r2 = new Rect(50, 50, 100, 100);
r1.expandToContain(r2);
ok(
r1.equals(new Rect(10, 10, 140, 140)),
"correct expandToContain on intersecting rectangles"
);
r1 = new Rect(10, 10, 100, 100);
r2 = new Rect(120, 120, 100, 100);
r1.expandToContain(r2);
ok(
r1.equals(new Rect(10, 10, 210, 210)),
"correct expandToContain on non-intersecting rectangles"
);
r1 = new Rect(10, 10, 100, 100);
r2 = new Rect(0, 0, 0, 0);
r1.expandToContain(r2);
ok(
r1.equals(new Rect(10, 10, 100, 100)),
"expandToContain of rect and empty is rect"
);
r1 = new Rect(10, 10, 0, 0);
r2 = new Rect(0, 0, 0, 0);
r1.expandToContain(r2);
ok(r1.isEmpty(), "expandToContain of empty and empty is empty");
},
testSubtract: function testSubtract() {
function equals(rects1, rects2) {
return (
rects1.length == rects2.length &&
rects1.every(function (r, i) {
return r.equals(rects2[i]);
})
);
}
let r1 = new Rect(0, 0, 100, 100);
let r2 = new Rect(500, 500, 100, 100);
ok(
equals(r1.subtract(r2), [r1]),
"subtract area outside of region yields same region"
);
r1 = new Rect(0, 0, 100, 100);
r2 = new Rect(-10, -10, 50, 120);
ok(
equals(r1.subtract(r2), [new Rect(40, 0, 60, 100)]),
"subtracting vertical bar from edge leaves one rect"
);
r1 = new Rect(0, 0, 100, 100);
r2 = new Rect(-10, -10, 120, 50);
ok(
equals(r1.subtract(r2), [new Rect(0, 40, 100, 60)]),
"subtracting horizontal bar from edge leaves one rect"
);
r1 = new Rect(0, 0, 100, 100);
r2 = new Rect(40, 40, 20, 20);
ok(
equals(r1.subtract(r2), [
new Rect(0, 0, 40, 100),
new Rect(40, 0, 20, 40),
new Rect(40, 60, 20, 40),
new Rect(60, 0, 40, 100),
]),
"subtracting rect in middle leaves union of rects"
);
},
};