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index.spec.ts
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index.spec.ts
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import * as _fetch from 'node-fetch';
import { Graql } from './index';
jest.mock('node-fetch');
const fetch = _fetch as any;
jest.spyOn(global.console, 'log').mockImplementation(jest.fn());
beforeEach(() => {
fetch.mockReset();
});
const ENDPOINT = 'http://localhost:1234/graphql';
describe("Graql", () => {
it("invokes fetch with default arguments", async () => {
const client = new Graql(ENDPOINT);
const query = 'QUERY', variables = {x: 1};
fetch.mockResolvedValue({ok: true, json: jest.fn(() => Promise.resolve({}))} as any);
await client.fetch({query, variables});
expect(fetch).toHaveBeenCalled();
const [endpoint, options] = fetch.mock.calls[0];
expect(endpoint).toEqual(ENDPOINT);
expect(JSON.parse((options.body as any))).toEqual({query, variables});
});
it("throws Error if response is not ok", async () => {
const client = new Graql(ENDPOINT);
fetch.mockResolvedValue({ok: false} as any);
await expect(client.fetch({query: ""})).rejects.toThrow(Error);
});
it("writes request log to console if debug is set", async () => {
const client = new Graql(ENDPOINT, {debug: true, headers: {'x-user-agent': 'graql-client'}});
fetch.mockResolvedValue({ok: true, json: jest.fn(() => Promise.resolve({}))} as any);
await client.fetch({query: ""});
expect(console.log).toHaveBeenCalled();
});
});