import { expect, test } from "bun:test";
import { generateQueriesFile, parseQueries } from "../src/generate.ts";

const queries = parseQueries(`-- name: GetUser :one\nSELECT * FROM users WHERE email = :email;\n`);

test("the generated header records the dialect it was built for", () => {
  // The same command emits different SQL per dialect, so a build under another
  // profile rewrites the committed file. The stamp makes that visible in the
  // diff instead of looking like unexplained churn.
  expect(generateQueriesFile(queries, [], "sqlite")).toContain("(dialect: sqlite)");
  expect(generateQueriesFile(queries, [], "postgres")).toContain("(dialect: postgres)");
});

test("placeholder style follows the dialect", () => {
  expect(generateQueriesFile(queries, [], "sqlite")).toContain("email = ?");
  expect(generateQueriesFile(queries, [], "postgres")).toContain("email = $1");
});

test("generation is deterministic for a fixed dialect", () => {
  const first = generateQueriesFile(queries, [], "postgres");
  const second = generateQueriesFile(queries, [], "postgres");
  expect(first).toBe(second);
});