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109 lines
3.4 KiB
TypeScript
109 lines
3.4 KiB
TypeScript
import { beforeEach, describe, expect, it, jest, test } from "@jest/globals";
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import { ApiBasedRepositoryLoader, ApiResponseError } from "../../src/loaders/ApiBasedRepositoryLoader";
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import { UnoptimizedInMemoryRepository } from "../../src/repositories/UnoptimizedInMemoryRepository";
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import { fetchSystemDataSuccessfulResponse } from "../jsonSnapshots/fetchSystemData/fetchSystemDataSuccessfulResponse";
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import { fetchSystemDataFailedResponse } from "../jsonSnapshots/fetchSystemData/fetchSystemDataFailedResponse";
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/**
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* Function to update behavior of the global `fetch` function.
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* Note that the Passio GO API returns status code 200 for failed responses.
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* @param obj
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* @param status
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*/
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function updateGlobalFetchMockJson(
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obj: any,
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status: number = 200
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) {
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// @ts-ignore
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global.fetch = jest.fn(() => {
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return Promise.resolve({
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json: () => Promise.resolve(obj),
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status,
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ok: status.toString().startsWith("2"), // 200-level codes are OK
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})
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}) as jest.Mock;
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}
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/**
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* Reset the global fetch function mock's JSON to return an empty object.
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* @param obj
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*/
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function resetGlobalFetchMockJson() {
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updateGlobalFetchMockJson({})
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}
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describe("ApiBasedRepositoryLoader", () => {
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let loader: ApiBasedRepositoryLoader;
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beforeEach(() => {
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loader = new ApiBasedRepositoryLoader(new UnoptimizedInMemoryRepository());
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resetGlobalFetchMockJson();
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});
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describe("fetchAndUpdateSystemData", () => {
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it("updates system data in repository if response received", async () => {
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const numberOfSystemsInResponse = fetchSystemDataSuccessfulResponse.all.length;
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updateGlobalFetchMockJson(fetchSystemDataSuccessfulResponse);
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await loader.fetchAndUpdateSystemData();
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const systems = await loader.repository.getSystems();
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if (loader.supportedSystemIds.length < numberOfSystemsInResponse) {
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expect(systems).toHaveLength(loader.supportedSystemIds.length);
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} else {
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expect(systems).toHaveLength(numberOfSystemsInResponse);
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}
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});
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it("throws the correct error if the API response contains no data", async () => {
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updateGlobalFetchMockJson(fetchSystemDataFailedResponse);
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// Jest is so confusing
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await expect(async () => {
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await loader.fetchAndUpdateSystemData();
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}).rejects.toThrow(ApiResponseError);
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});
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});
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describe("fetchAndUpdateRouteDataForExistingSystems", () => {
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it("updates route data in repository if there are systems and response received", async () => {
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});
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it("throws the correct error if the API response contains no data", async () => {
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});
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});
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describe("fetchAndUpdateStopAndPolylineDataForRoutesInExistingSystems", () => {
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it("updates stop and polyline data if there are systems and response received", async () => {
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});
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it("throws the correct error if the API response contains no data", async () => {
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})
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});
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describe("fetchAndUpdateShuttleDataForExistingSystems", () => {
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it("updates shuttle data in repository if there are systems and response received", async () => {
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});
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it("throws the correct error if the API response contains no data", async () => {
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});
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});
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describe("fetchAndUpdateEtaDataForExistingSystems", () => {
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it("updates shuttle data in repository if there are systems and response received", async () => {
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});
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it("throws the correct error if the API response contains no data", async () => {
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});
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});
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});
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