inline-schema/src/csv-loader/tests/parseCsv-combinators.test.ts

import { describe, it, expect } from "vitest";
import { parseCsv } from "../loader";
import * as path from "path";
import { fixturesDir } from "../test-utils";

describe("parseCsv - references in combinatory schemas", () => {
  it("should resolve reference inside a tuple", () => {
    const csv = [
      "id,info",
      "string,[ref: @users; note: string]",
      "1,[ref: 1; note: urgent]",
    ].join("\n");

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(1);
    const info = result.data[0].info as unknown[];
    expect(info).toHaveLength(2);
    expect(info[0]).toEqual({
      id: "1",
      name: "Alice",
      email: "alice@example.com",
    });
    expect(info[1]).toBe("urgent");
  });

  it("should resolve reference array inside a tuple", () => {
    const csv = [
      "id,info",
      "string,[refs: @users[]; note: string]",
      "1,[refs: [1; 2]; note: test]",
    ].join("\n");

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(1);
    const info = result.data[0].info as unknown[];
    expect(info).toHaveLength(2);
    const refs = info[0] as Record<string, unknown>[];
    expect(refs).toHaveLength(2);
    expect(refs[0]).toEqual({
      id: "1",
      name: "Alice",
      email: "alice@example.com",
    });
    expect(refs[1]).toEqual({ id: "2", name: "Bob", email: "bob@example.com" });
    expect(info[1]).toBe("test");
  });

  it("should resolve array of tuples containing references", () => {
    const csv = [
      "id,pairs",
      "string,[@users; number][]",
      "1,[[1; 10]; [2; 20]]",
    ].join("\n");

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(1);
    const pairs = result.data[0].pairs as unknown[][];
    expect(pairs).toHaveLength(2);
    expect(pairs[0]).toHaveLength(2);
    expect(pairs[0][0]).toEqual({
      id: "1",
      name: "Alice",
      email: "alice@example.com",
    });
    expect(pairs[0][1]).toBe(10);
    expect(pairs[1][0]).toEqual({
      id: "2",
      name: "Bob",
      email: "bob@example.com",
    });
    expect(pairs[1][1]).toBe(20);
  });

  it("should resolve reference in union (@users | string)", () => {
    const csv = ["id,value", "string,@users | string", "1,1", "2,unknown"].join(
      "\n",
    );

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(2);
    expect(result.data[0].value).toEqual({
      id: "1",
      name: "Alice",
      email: "alice@example.com",
    });
    expect(result.data[1].value).toBe("unknown");
  });

  it("should resolve reference in union (@users[] | string)", () => {
    const csv = [
      "id,value",
      "string,@users[] | string",
      "1,[1; 2]",
      "2,none",
    ].join("\n");

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(2);
    const arr = result.data[0].value as Record<string, unknown>[];
    expect(arr).toHaveLength(2);
    expect(arr[0]).toEqual({
      id: "1",
      name: "Alice",
      email: "alice@example.com",
    });
    expect(result.data[1].value).toBe("none");
  });

  it("should resolve array of reference unions (@users | @parts)[]", () => {
    const csv = ["id,items", "string,(@users | @parts)[]", "1,[1; 2]"].join(
      "\n",
    );

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(1);
  });

  it("should resolve named tuple with reference and other fields", () => {
    const csv = [
      "id,details",
      "string,[owner: @users; count: number]",
      "1,[owner: 1; count: 5]",
    ].join("\n");

    const result = parseCsv(csv, {
      emitTypes: false,
      currentFilePath: path.join(fixturesDir, "test.csv"),
    });

    expect(result.data).toHaveLength(1);
    const details = result.data[0].details as unknown[];
    expect(details).toHaveLength(2);
    expect(details[0]).toEqual({
      id: "1",
      name: "Alice",
      email: "alice@example.com",
    });
    expect(details[1]).toBe(5);
  });
});