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| Merge remote-tracking branch 'origin/claude/cool-newton-7nm8r9' | 1 | import assert from "node:assert/strict"; |
| 2 | import { test } from "node:test"; | |
| 3 | ||
| 4 | import { ROW_HEIGHT, rowAt, rowStarts, windowOf } from "./log-window.ts"; | |
| 5 | ||
| 6 | test("rows start where the rows above them end, measured or not", () => { | |
| 7 | const starts = rowStarts(4, (index) => (index === 1 ? 60 : undefined)); | |
| 8 | assert.deepEqual([...starts], [0, ROW_HEIGHT, ROW_HEIGHT + 60, 2 * ROW_HEIGHT + 60, 3 * ROW_HEIGHT + 60]); | |
| 9 | assert.equal(rowAt(starts, 0), 0); | |
| 10 | assert.equal(rowAt(starts, ROW_HEIGHT), 1); | |
| 11 | assert.equal(rowAt(starts, ROW_HEIGHT + 59), 1); | |
| 12 | assert.equal(rowAt(starts, ROW_HEIGHT + 60), 2); | |
| 13 | assert.equal(rowAt(starts, 10_000), 3, "past the end is the last row"); | |
| 14 | }); | |
| 15 | ||
| 16 | test("only the rows on screen and a little around them are drawn", () => { | |
| 17 | const starts = rowStarts(50_000, () => undefined); | |
| 18 | // The screen shows rows 1000 to 1040. | |
| 19 | const [from, to] = windowOf(starts, 1000 * ROW_HEIGHT, 1040 * ROW_HEIGHT, 200); | |
| 20 | assert.deepEqual([from, to], [990, 1051]); | |
| 21 | // At the very end, following the newest line. | |
| 22 | const end = starts[50_000]!; | |
| 23 | assert.deepEqual(windowOf(starts, end - 800, end, 200), [49_950, 50_000]); | |
| 24 | // The log above or below the screen draws a few rows at the near end. | |
| 25 | assert.deepEqual(windowOf(starts, -5000, -4000, 200), [0, 20]); | |
| 26 | assert.deepEqual(windowOf(starts, end + 4000, end + 5000, 200), [49_980, 50_000]); | |
| 27 | assert.deepEqual(windowOf(rowStarts(0, () => undefined), 0, 100), [0, 0]); | |
| 28 | }); |
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