execute-latest-articles-query.test.js

import { createTestServer } from "./test-server";
import {
  executeLatestArticlesQuery,
  GraphQLError,
} from "../execute-latest-articles-query";
import { createTestArticlePublishedOneDayAgo } from "./data/create-test-article";

describe("executeLatestArticlesQuery", () => {
  let testServer;
  beforeAll((done) => {
    testServer = createTestServer({ port: 4123 });
    testServer.listen(done);
  });
  afterAll((done) => {
    testServer.close(done);
  });
  it("executes the correct request", async () => {
    [...]
  });

  it("get the latest articles from the graphQL response", async () => {
    [...]
  });

  it("fails with a GraphQLError if there are graphQL errors in the response", async () => {
    // arrange
    expect.assertions(1);
    const domain = "www.my-website.co.uk";
    const graphQLEndpoint = "http://localhost:4123";
    const expectedErrors = [
      {
        message: "some error",
      },
      {
        message: "some other error",
      },
    ];
    testServer.setResponse({
      status: 400,
      body: {
        errors: expectedErrors,
      },
    });

    // act & assert
    await expect(
      executeLatestArticlesQuery({ domain, graphQLEndpoint })
    ).rejects.toEqual(new GraphQLError(expectedErrors));
  });
});