44 lines
1.7 KiB
TypeScript
44 lines
1.7 KiB
TypeScript
import { describe, expect, test } from "vitest";
|
|
import { z } from "zod/v4";
|
|
|
|
import { simulateResponseContractAsync } from "./response-contract";
|
|
|
|
const parser = async (response: { json: () => Promise<unknown> }) =>
|
|
z.object({ count: z.number() }).parse(await response.json());
|
|
|
|
describe("simulateResponseContractAsync", () => {
|
|
test("runs valid, mapped, and rejected payload fixtures", async () => {
|
|
const results = await simulateResponseContractAsync(
|
|
parser,
|
|
[
|
|
{ name: "valid response", payload: { count: 2 }, expected: { total: 2 } },
|
|
{ name: "invalid response", payload: { count: "two" }, rejects: true },
|
|
],
|
|
(value) => ({ total: value.count }),
|
|
);
|
|
|
|
expect(results).toEqual([
|
|
{ name: "valid response", passed: true, message: undefined },
|
|
{ name: "invalid response", passed: true, message: undefined },
|
|
]);
|
|
});
|
|
|
|
test("treats a fixture without expected or rejects as a successful parse assertion", async () => {
|
|
const results = await simulateResponseContractAsync(parser, [{ name: "parses only", payload: { count: 5 } }]);
|
|
|
|
expect(results).toEqual([{ name: "parses only", passed: true, message: undefined }]);
|
|
});
|
|
|
|
test("reports actionable mismatches without throwing away later fixtures", async () => {
|
|
const results = await simulateResponseContractAsync(parser, [
|
|
{ name: "wrong output", payload: { count: 2 }, expected: { count: 3 } },
|
|
{ name: "unexpected success", payload: { count: 4 }, rejects: true },
|
|
]);
|
|
|
|
expect(results).toEqual([
|
|
{ name: "wrong output", passed: false, message: "Parsed output did not match expected." },
|
|
{ name: "unexpected success", passed: false, message: "Expected parser rejection, but parsing succeeded." },
|
|
]);
|
|
});
|
|
});
|