25 lines
1.1 KiB
TypeScript
25 lines
1.1 KiB
TypeScript
import { describe, expect, test } from "bun:test";
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import { parseCsv, toCsv } from "../src/csv.ts";
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describe("csv codec", () => {
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test("round-trips awkward cells", () => {
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const x = [["a", "b,c", 'q"uote', "line\nbreak", "cr\r\nlf", "", "🐉"], ["", "", "", "", "", "", ""], ["only"]];
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expect(parseCsv(toCsv(x))).toEqual(x);
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});
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test("toCsv uses CRLF and quotes as needed", () => {
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expect(toCsv([["a", "b c"], ["x,y", 'z"']])).toBe('a,b c\r\n"x,y","z"""\r\n');
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});
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test("strips BOM and detects semicolon / tab", () => {
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expect(parseCsv("a;b\n1;2\n")).toEqual([["a", "b"], ["1", "2"]]);
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expect(parseCsv("a\tb\n1\t2")).toEqual([["a", "b"], ["1", "2"]]);
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});
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test("explicit delimiter wins; delimiters inside quoted header are ignored", () => {
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expect(parseCsv('"a;b;c",d\n1,2', {})).toEqual([["a;b;c", "d"], ["1", "2"]]);
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expect(parseCsv("a,b;c\n1,2;3", { delimiter: ";" })).toEqual([["a,b", "c"], ["1,2", "3"]]);
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});
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test("handles CRLF, blank trailing lines, and empty input", () => {
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expect(parseCsv("a,b\r\n1,2\r\n\r\n")).toEqual([["a", "b"], ["1", "2"]]);
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expect(parseCsv("")).toEqual([]);
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});
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});
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