async.test.js

import { doAsync, scenario, scenarios, setupForRspec, Stage } from 'js-given';

import { sum } from './sum';

setupForRspec(describe, it);

async function httpRequest(url) {
  return { statusCode: 200 };
}

// tag::AsyncStage[]
class AsyncStage extends Stage {
  the_url(url) {
    this.url = url;
    return this;
  }

  making_an_http_request_to_that_url() {
    doAsync(async () => {
      const { statusCode } = await httpRequest(this.url);
      this.statusCode = statusCode;
    });
    return this;
  }

  the_status_code_is(expectedStatusCode) {
    expect(this.statusCode).toEqual(expectedStatusCode);
    return this;
  }
}
// end::AsyncStage[]

// tag::AsyncScenario[]
scenarios('async', AsyncStage, ({ given, when, then }) => {
  return {
    an_async_scenario_can_be_executed: scenario({}, () => {
      given().the_url('https://jsgiven.org');

      when().making_an_http_request_to_that_url();

      then().the_status_code_is(200);
    }),
  };
});
// end::AsyncScenario[]

// tag::PromiseStage[]
class PromiseStage extends Stage {
  the_url(url) {
    this.url = url;
    return this;
  }

  making_an_http_request_to_that_url() {
    doAsync(() => {
      return httpRequest(this.url).then(({ statusCode }) => {
        this.statusCode = statusCode;
      });
    });
    return this;
  }

  the_status_code_is(expectedStatusCode) {
    expect(this.statusCode).toEqual(expectedStatusCode);
    return this;
  }
}
// end::PromiseStage[]

// tag::PromiseScenario[]
scenarios('async', PromiseStage, ({ given, when, then }) => {
  return {
    an_async_scenario_with_promises_can_be_executed: scenario({}, () => {
      given().the_url('https://jsgiven.org');

      when().making_an_http_request_to_that_url();

      then().the_status_code_is(200);
    }),
  };
});
// end::PromiseScenario[]