Kundan
46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import { pointFrom } from "../src/point";
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import {
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lineSegment,
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lineSegmentIntersectionPoints,
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isLineSegment,
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} from "../src/segment";
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describe("line-segment intersections", () => {
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it("should correctly detect intersection", () => {
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expect(
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lineSegmentIntersectionPoints(
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lineSegment(pointFrom(0, 0), pointFrom(5, 0)),
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lineSegment(pointFrom(2, -2), pointFrom(3, 2)),
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),
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).toEqual(pointFrom(2.5, 0));
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});
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it("should correctly detect non-intersection", () => {
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expect(
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lineSegmentIntersectionPoints(
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lineSegment(pointFrom(0, 0), pointFrom(5, 0)),
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lineSegment(pointFrom(3, 1), pointFrom(4, 4)),
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),
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).toEqual(null);
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});
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});
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describe("isLineSegment validation", () => {
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it("should return true for a valid segment", () => {
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expect(
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isLineSegment([
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[0, 0],
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[1, 1],
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]),
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).toBe(true);
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});
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it("should return false if second element is not a point", () => {
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const invalidSegment = [[0, 0], "not-a-point"] as any;
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expect(isLineSegment(invalidSegment)).toBe(false);
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});
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it("should return false for wrong length", () => {
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expect(isLineSegment([[0, 0]])).toBe(false);
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});
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});
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