import { beforeEach, describe, jest, test } from "@jest/globals";

/**
 * Update the global fetch function to return a specific object.
 * @param obj
 */
function updateGlobalFetchMockJson(obj: any) {
  // @ts-ignore
  global.fetch = jest.fn(() => {
    return Promise.resolve({
      json: () => Promise.resolve(obj)
    })
  }) as jest.Mock;
}

/**
 * Reset the global fetch function mock's JSON to return an empty object.
 * @param obj
 */
function resetGlobalFetchMockJson() {
  updateGlobalFetchMockJson({})
}

beforeEach(() => {
  resetGlobalFetchMockJson();
})

describe("getEtaForShuttleAndStopId", () => {
  test("getEtaForShuttleAndStopId returns correct ETA data", async () => {

  });

  test("getEtaForShuttleAndStopId returns null if API call is invalid", async () => {

  });

  test("getEtasForShuttleAndStopId returns old data if not expired", async () => {

  });
});

describe("getEtasForShuttleId", () => {
  test("getEtasForShuttleId returns correct ETA data", async () => {

  });

  test("getEtasForShuttleId returns empty array if no data available", async () => {

  });

  test("getEtasForShuttleId returns old data if not expired", async () => {

  });
});

describe("getEtasForStopId", () => {
  test("getEtasForStopId returns correct ETA data", async () => {

  });

  test("getEtasForStopId returns empty array if no data available", async () => {

  });

  test("getEtasForStopId returns old data if not expired", async () => {

  });
});