test-utils.ts•1.65 kB
import { jest } from "@jest/globals";
/**
* Type for mock response options
*/
export interface MockResponseOptions {
ok?: boolean;
status?: number;
statusText?: string;
headers?: Record<string, string>;
}
/**
* Creates a mock response object for testing
*/
export function createMockResponse(
data: any,
options: MockResponseOptions = {}
): Response {
const { ok = true, status = 200, statusText = "OK", headers = {} } = options;
return {
ok,
status,
statusText,
headers: new Headers(headers),
json: () => Promise.resolve(data),
text: () =>
Promise.resolve(typeof data === "string" ? data : JSON.stringify(data)),
blob: () => Promise.resolve(new Blob()),
} as Response;
}
/**
* Test fixture generator for common test data
*/
export class TestFixtures {
static createNote(overrides = {}) {
return {
id: "test-note-1",
title: "Test Note",
content: "Test content",
created: new Date().toISOString(),
...overrides,
};
}
static createNoteList(count: number) {
return Array.from({ length: count }, (_, i) =>
this.createNote({ id: `test-note-${i + 1}` })
);
}
}
/**
* Helper to wait for promises to resolve
*/
export const flushPromises = () =>
new Promise((resolve) => setImmediate(resolve));
/**
* Type guard for error objects
*/
export function isError(error: unknown): error is Error {
return error instanceof Error;
}
/**
* Creates a partial mock object with type safety
*/
export function createPartialMock<T extends object>(
overrides: Partial<T> = {}
): jest.Mocked<T> {
return overrides as jest.Mocked<T>;
}