| 1 | import assert from "node:assert/strict"; |
| 2 | import { test } from "node:test"; |
| 3 | |
| 4 | import { formatLineHash, inRange, parseLineHash, pickLine } from "./line-anchor.ts"; |
| 5 | |
| 6 | test("one line and a run of lines are read from the fragment", () => { |
| 7 | assert.deepEqual(parseLineHash("#L679"), { start: 679, end: 679 }); |
| 8 | assert.deepEqual(parseLineHash("#L10-L20"), { start: 10, end: 20 }); |
| 9 | assert.deepEqual(parseLineHash("L10-L20"), { start: 10, end: 20 }); |
| 10 | assert.deepEqual(parseLineHash("#L10-20"), { start: 10, end: 20 }); |
| 11 | }); |
| 12 | |
| 13 | test("a run written backwards is put in order", () => { |
| 14 | assert.deepEqual(parseLineHash("#L20-L10"), { start: 10, end: 20 }); |
| 15 | }); |
| 16 | |
| 17 | test("anything else names no lines", () => { |
| 18 | for (const hash of ["", "#", "#top", "#L", "#Lx", "#l12", "#L12-", "#L12-L", "#L1-L2-L3", "#L0", "#L-3", "#L12 "]) { |
| 19 | assert.equal(parseLineHash(hash), null, hash); |
| 20 | } |
| 21 | }); |
| 22 | |
| 23 | test("a run is held to the file's length", () => { |
| 24 | assert.deepEqual(parseLineHash("#L10-L900", 40), { start: 10, end: 40 }); |
| 25 | assert.deepEqual(parseLineHash("#L40", 40), { start: 40, end: 40 }); |
| 26 | assert.equal(parseLineHash("#L41", 40), null); |
| 27 | assert.equal(parseLineHash("#L41-L50", 40), null); |
| 28 | }); |
| 29 | |
| 30 | test("a run is written back the way it is read", () => { |
| 31 | assert.equal(formatLineHash({ start: 12, end: 12 }), "#L12"); |
| 32 | assert.equal(formatLineHash({ start: 10, end: 20 }), "#L10-L20"); |
| 33 | for (const hash of ["#L1", "#L3-L9"]) assert.equal(formatLineHash(parseLineHash(hash)!), hash); |
| 34 | }); |
| 35 | |
| 36 | test("a pick is one line; a shift-pick runs from the line already picked", () => { |
| 37 | assert.deepEqual(pickLine(null, 7, false), { start: 7, end: 7 }); |
| 38 | assert.deepEqual(pickLine(null, 7, true), { start: 7, end: 7 }); |
| 39 | assert.deepEqual(pickLine({ start: 10, end: 10 }, 7, false), { start: 7, end: 7 }); |
| 40 | assert.deepEqual(pickLine({ start: 10, end: 10 }, 20, true), { start: 10, end: 20 }); |
| 41 | assert.deepEqual(pickLine({ start: 10, end: 10 }, 4, true), { start: 4, end: 10 }); |
| 42 | assert.deepEqual(pickLine({ start: 10, end: 20 }, 15, true), { start: 10, end: 15 }); |
| 43 | }); |
| 44 | |
| 45 | test("a line is in the run when it is between its ends", () => { |
| 46 | assert.equal(inRange({ start: 10, end: 20 }, 10), true); |
| 47 | assert.equal(inRange({ start: 10, end: 20 }, 20), true); |
| 48 | assert.equal(inRange({ start: 10, end: 20 }, 21), false); |
| 49 | assert.equal(inRange(null, 1), false); |
| 50 | }); |