src/api.spec.ts

import { expect } from "chai";

import * as utils from "./utils";

describe("api", () => {
  beforeEach(() => {
    // The api module resolves env var statically so we need to
    // do lazy imports and clear the import each time.
    delete require.cache[require.resolve("./api")];
  });

  afterEach(() => {
    delete process.env.FIRESTORE_EMULATOR_HOST;
    delete process.env.FIRESTORE_URL;

    // This is dirty, but utils keeps stateful overrides and we need to clear it
    utils.envOverrides.length = 0;
  });

  after(() => {
    delete require.cache[require.resolve("./api")];
  });

  it("should override with FIRESTORE_URL", () => {
    process.env.FIRESTORE_URL = "http://foobar.com";

    const api = require("./api");
    expect(api.firestoreOrigin()).to.eq("http://foobar.com");
  });

  it("should prefer FIRESTORE_EMULATOR_HOST to FIRESTORE_URL", () => {
    process.env.FIRESTORE_EMULATOR_HOST = "localhost:8080";
    process.env.FIRESTORE_URL = "http://foobar.com";

    const api = require("./api");
    expect(api.firestoreOriginOrEmulator()).to.eq("http://localhost:8080");
  });
});