26 lines
1.0 KiB
TypeScript
26 lines
1.0 KiB
TypeScript
import { expect, it } from "vitest";
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import { webSourceOffset } from "./webSourcePosition.js";
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it("uses UTF-16 columns and actual JavaScript line terminators", () => {
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const text = "🎋a\r\nb\rc\nd\u2028e\u2029";
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expect(webSourceOffset(text, { line: 1, column: 2 })).toBe(2);
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expect(webSourceOffset(text, { line: 1, column: 3 })).toBe(3);
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expect(webSourceOffset(text, { line: 1, column: 4 })).toBeUndefined();
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expect(webSourceOffset(text, { line: 2, column: 0 })).toBe(5);
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expect(webSourceOffset(text, { line: 6, column: 0 })).toBe(13);
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expect(webSourceOffset(text, { line: 7, column: 0 })).toBeUndefined();
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});
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it.each([
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{ line: 0, column: 0 },
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{ line: 1, column: -1 },
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{ line: 1.5, column: 0 },
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])("rejects invalid source positions: %j", (position) => {
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expect(webSourceOffset("", position)).toBeUndefined();
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});
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it("retains the empty source and the final empty line", () => {
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expect(webSourceOffset("", { line: 1, column: 0 })).toBe(0);
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expect(webSourceOffset("a\r\n", { line: 2, column: 0 })).toBe(3);
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});
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