From 91bb7d7b85df3b90882e92aeae2fa2021f61733e Mon Sep 17 00:00:00 2001 From: mrmr1993 Date: Thu, 18 Dec 2014 12:59:35 +0000 Subject: Add tests for lib/rect --- tests/unit_tests/rect_test.coffee | 232 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 232 insertions(+) create mode 100644 tests/unit_tests/rect_test.coffee (limited to 'tests') diff --git a/tests/unit_tests/rect_test.coffee b/tests/unit_tests/rect_test.coffee new file mode 100644 index 00000000..cfb26b05 --- /dev/null +++ b/tests/unit_tests/rect_test.coffee @@ -0,0 +1,232 @@ +require "./test_helper.js" +extend(global, require "../../lib/rect.js") + +context "Rect", + should "set rect properties correctly", -> + [x1, y1, x2, y2] = [1, 2, 3, 4] + rect = Rect.create x1, y1, x2, y2 + assert.equal rect.left, x1 + assert.equal rect.top, y1 + assert.equal rect.right, x2 + assert.equal rect.bottom, y2 + assert.equal rect.width, x2 - x1 + assert.equal rect.height, y2 - y1 + + should "translate rect horizontally", -> + [x1, y1, x2, y2] = [1, 2, 3, 4] + x = 5 + rect1 = Rect.create x1, y1, x2, y2 + rect2 = Rect.translate rect1, x + + assert.equal rect1.left + x, rect2.left + assert.equal rect1.right + x, rect2.right + + assert.equal rect1.width, rect2.width + assert.equal rect1.height, rect2.height + assert.equal rect1.top, rect2.top + assert.equal rect1.bottom, rect2.bottom + + should "translate rect vertically", -> + [x1, y1, x2, y2] = [1, 2, 3, 4] + y = 5 + rect1 = Rect.create x1, y1, x2, y2 + rect2 = Rect.translate rect1, undefined, y + + assert.equal rect1.top + y, rect2.top + assert.equal rect1.bottom + y, rect2.bottom + + assert.equal rect1.width, rect2.width + assert.equal rect1.height, rect2.height + assert.equal rect1.left, rect2.left + assert.equal rect1.right, rect2.right + +context "Rect subtraction", + context "unchanged by rects outside", + should "left, above", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create -2, -2, -1, -1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "left", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create -2, 0, -1, 1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "left, below", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create -2, 2, -1, 3 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "right, above", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 2, -2, 3, -1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "right", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 2, 0, 3, 1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "right, below", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 2, 2, 3, 3 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "above", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 0, -2, 1, -1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "below", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 0, 2, 1, 3 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + context "unchanged by rects touching", + should "left, above", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create -1, -1, 0, 0 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "left", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create -1, 0, 0, 1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "left, below", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create -1, 1, 0, 2 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "right, above", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 1, -1, 2, 0 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "right", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 1, 0, 2, 1 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "right, below", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 1, 1, 2, 2 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "above", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 0, -1, 1, 0 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "below", -> + rect1 = Rect.create 0, 0, 1, 1 + rect2 = Rect.create 0, 1, 1, 2 + + rects = Rect.subtract rect1, rect2 + assert.equal rects.length, 1 + rect = rects[0] + assert.isTrue Rect.equals rect1, rect + + should "have nothing when subtracting itself", -> + rect = Rect.create 0, 0, 1, 1 + rects = Rect.subtract rect, rect + assert.equal rects.length, 0 + + should "not overlap subtracted rect", -> + rect = Rect.create 0, 0, 3, 3 + for x in [-2..2] + for y in [-2..2] + for width in [1..3] + for height in [1..3] + subtractRect = Rect.create x, y, (x + width), (y + height) + resultRects = Rect.subtract rect, subtractRect + for resultRect in resultRects + assert.isFalse Rect.contains subtractRect, resultRect + + should "be contained in original rect", -> + rect = Rect.create 0, 0, 3, 3 + for x in [-2..2] + for y in [-2..2] + for width in [1..3] + for height in [1..3] + subtractRect = Rect.create x, y, (x + width), (y + height) + resultRects = Rect.subtract rect, subtractRect + for resultRect in resultRects + assert.isTrue Rect.contains rect, resultRect + + should "contain the subtracted rect in the original minus the results", -> + rect = Rect.create 0, 0, 3, 3 + for x in [-2..2] + for y in [-2..2] + for width in [1..3] + for height in [1..3] + subtractRect = Rect.create x, y, (x + width), (y + height) + resultRects = Rect.subtract rect, subtractRect + resultComplement = [Rect.copy rect] + for resultRect in resultRects + resultComplement = Array::concat.apply [], + (resultComplement.map (rect) -> Rect.subtract rect, resultRect) + assert.isTrue (resultComplement.length == 0 or resultComplement.length == 1) + if resultComplement.length == 1 + complementRect = resultComplement[0] + assert.isTrue Rect.contains subtractRect, complementRect -- cgit v1.2.3