50 lines
2.0 KiB
TypeScript
50 lines
2.0 KiB
TypeScript
 
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import { describe, expect, it } from "vitest";
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import { joinWrappedRows, MAX_JOINED_LENGTH, offsetToCell, type RowSource } from "./xtermLineJoin";
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/** rows[i] = [text, isWrapped] */
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const buffer = (rows: Array<[string, boolean]>): RowSource => ({
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getLine: (y) =>
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rows[y] ? { isWrapped: rows[y][1], translateToString: (trim?: boolean) => (trim ? rows[y][0].trimEnd() : rows[y][0]) } : undefined,
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});
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describe("joinWrappedRows", () => {
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it("returns a single unwrapped row as-is", () => {
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const j = joinWrappedRows(buffer([["hello src/a.ts", false]]), 0);
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expect(j).toEqual({ text: "hello src/a.ts", firstRow: 0, rowStarts: [0] });
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});
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it("walks up to the row that started the wrap and down through continuations", () => {
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const b = buffer([
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["unrelated", false],
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["/workspace/very/long/pa", false],
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["th/to/file.ts:12 and mo", true],
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["re text", true],
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["next line", false],
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]);
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const fromMiddle = joinWrappedRows(b, 2);
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expect(fromMiddle.text).toBe("/workspace/very/long/path/to/file.ts:12 and more text");
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expect(fromMiddle.firstRow).toBe(1);
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expect(fromMiddle.rowStarts).toEqual([0, 23, 46]);
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expect(joinWrappedRows(b, 1)).toEqual(fromMiddle);
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expect(joinWrappedRows(b, 3)).toEqual(fromMiddle);
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});
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it("stops at the length budget", () => {
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const rows: Array<[string, boolean]> = [["a".repeat(1000), false]];
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for (let i = 0; i < 5; i++) rows.push(["b".repeat(1000), true]);
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const j = joinWrappedRows(buffer(rows), 0);
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expect(j.text.length).toBeLessThanOrEqual(MAX_JOINED_LENGTH);
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expect(j.rowStarts.length).toBe(2);
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});
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});
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describe("offsetToCell", () => {
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it("maps offsets to 1-based cells on the right row", () => {
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const j = { text: "abcdefgh", firstRow: 4, rowStarts: [0, 3, 6] };
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expect(offsetToCell(j, 0)).toEqual({ x: 1, y: 5 });
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expect(offsetToCell(j, 2)).toEqual({ x: 3, y: 5 });
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expect(offsetToCell(j, 3)).toEqual({ x: 1, y: 6 });
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expect(offsetToCell(j, 7)).toEqual({ x: 2, y: 7 });
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});
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});
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