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✅ Tests for utils

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Joost De Cock 2018-08-12 13:32:53 +02:00
parent 6b1c3fbaaf
commit 9d486fd617
5 changed files with 138 additions and 20 deletions
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tests/utils.test.js Normal file
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var expect = require("chai").expect;
var freesewing = require("../dist/index.js");
var utils = freesewing.utils;
it("Should return the correct macro name", () => {
expect(utils.macroName("test")).to.equal("_macro_test");
});
it("Should find the intersection of two endless line segments", () => {
var a = new freesewing.Point(10, 20);
var b = new freesewing.Point(20, 24);
var c = new freesewing.Point(90, 19);
var d = new freesewing.Point(19, 70);
var X = freesewing.utils.beamsCross(a, b, c, d);
expect(X.x).to.equal(60.49);
expect(X.y).to.equal(40.2);
});
it("Should detect parallel lines", () => {
var a = new freesewing.Point(10, 20);
var b = new freesewing.Point(20, 20);
var c = new freesewing.Point(90, 40);
var d = new freesewing.Point(19, 40);
expect(freesewing.utils.beamsCross(a, b, c, d)).to.equal(false);
expect(freesewing.utils.linesCross(a, b, c, d)).to.equal(false);
});
it("Should detect vertical lines", () => {
var a = new freesewing.Point(10, 20);
var b = new freesewing.Point(10, 90);
var c = new freesewing.Point(90, 40);
var d = new freesewing.Point(19, 40);
var X = freesewing.utils.beamsCross(a, b, c, d);
expect(X.x).to.equal(10);
expect(X.y).to.equal(40);
var X = freesewing.utils.beamsCross(c, d, a, b);
expect(X.x).to.equal(10);
});
it("Should swap direction prior to finding beam intersection", () => {
var a = new freesewing.Point(10, 20);
var b = new freesewing.Point(00, 90);
var c = new freesewing.Point(90, 40);
var d = new freesewing.Point(19, 40);
var X = freesewing.utils.beamsCross(a, b, c, d);
expect(X.x).to.equal(7.14);
expect(X.y).to.equal(40);
});
it("Should return false when two lines don't intersect", () => {
var a = new freesewing.Point(10, 20);
var b = new freesewing.Point(20, 24);
var c = new freesewing.Point(90, 19);
var d = new freesewing.Point(19, 70);
expect(freesewing.utils.linesCross(a, b, c, d)).to.equal(false);
});
it("Should find the intersection of two line segments", () => {
var a = new freesewing.Point(10, 10);
var b = new freesewing.Point(90, 74);
var c = new freesewing.Point(90, 19);
var d = new freesewing.Point(11, 70);
var X = freesewing.utils.beamsCross(a, b, c, d);
expect(X.x).to.equal(51.95);
expect(X.y).to.equal(43.56);
});
it("Should find the intersection of an endles line and a give Y-value", () => {
var a = new freesewing.Point(10, 10);
var b = new freesewing.Point(90, 74);
var X = freesewing.utils.beamCrossesY(a, b, 69);
expect(X.x).to.equal(83.75);
expect(X.y).to.equal(69);
});
it("Should detect horizontal lines never pass a give Y-value", () => {
var a = new freesewing.Point(10, 10);
var b = new freesewing.Point(90, 10);
expect(freesewing.utils.beamCrossesY(a, b, 69)).to.equal(false);
});
it("Should correctly format units", () => {
expect(freesewing.utils.units(123.456)).to.equal("12.35cm");
expect(freesewing.utils.units(123.456, "imperial")).to.equal('4.86"');
});