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Diffstat (limited to 'toolkit/modules/tests/browser/browser_Geometry.js')
-rw-r--r-- | toolkit/modules/tests/browser/browser_Geometry.js | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/toolkit/modules/tests/browser/browser_Geometry.js b/toolkit/modules/tests/browser/browser_Geometry.js new file mode 100644 index 0000000000..83aeb305d1 --- /dev/null +++ b/toolkit/modules/tests/browser/browser_Geometry.js @@ -0,0 +1,134 @@ +/* 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/. */ + +const { Point, Rect } = ChromeUtils.importESModule( + "resource://gre/modules/Geometry.sys.mjs" +); + +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" + ); + }, +}; |