index.test.js

const nock = require("nock");
const { Probot } = require("probot");
const outdent = require("outdent");

const changesetBot = require(".");

const pullRequestOpen = require("./test/fixtures/pull_request.opened");
const pullRequestSynchronize = require("./test/fixtures/pull_request.synchronize");
const releasePullRequestOpen = require("./test/fixtures/release_pull_request.opened");

nock.disableNetConnect();

/*
Oh god none of these tests work - we should really do something about having this tested
*/
describe.skip("changeset-bot", () => {
  let probot;

  beforeEach(() => {
    probot = new Probot({});
    const app = probot.load(changesetBot);

    // just return a test token
    app.app = () => "test.ts";
  });

  it("should add a comment when there is no comment", async () => {
    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/issues/1/comments")
      .reply(200, []);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/files")
      .reply(200, [
        { filename: ".changeset/something/changes.md", status: "added" }
      ]);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/commits")
      .reply(200, [{ sha: "ABCDE" }]);

    nock("https://api.github.com")
      .post("/repos/pyu/testing-things/issues/1/comments", body => {
        expect(body.comment_id).toBeNull();
        return true;
      })
      .reply(200);

    await probot.receive({
      name: "pull_request",
      payload: pullRequestOpen
    });
  });

  it("should update a comment when there is a comment", async () => {
    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/issues/1/comments")
      .reply(200, [
        {
          id: 7,
          user: {
            login: "changeset-bot[bot]"
          }
        }
      ]);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/files")
      .reply(200, [
        { filename: ".changeset/something/changes.md", status: "added" }
      ]);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/commits")
      .reply(200, [{ sha: "ABCDE" }]);

    nock("https://api.github.com")
      .patch("/repos/pyu/testing-things/issues/comments/7", body => {
        expect(body.number).toBe(1);
        return true;
      })
      .reply(200);

    await probot.receive({
      name: "pull_request",
      payload: pullRequestSynchronize
    });
  });

  it("should show correct message if there is a changeset", async () => {
    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/issues/1/comments")
      .reply(200, []);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/files")
      .reply(200, [
        { filename: ".changeset/something/changes.md", status: "added" }
      ]);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/commits")
      .reply(200, [{ sha: "ABCDE" }]);

    nock("https://api.github.com")
      .post("/repos/pyu/testing-things/issues/1/comments", ({ body }) => {
        expect(body).toEqual(outdent`
          ###  🦋  Changeset is good to go

          Latest commit: ABCDE

          **We got this.**

          Not sure what this means? [Click here  to learn what changesets are](https://github.com/Noviny/changesets/blob/master/docs/adding-a-changeset.md).`);
        return true;
      })
      .reply(200);

    await probot.receive({
      name: "pull_request",
      payload: pullRequestOpen
    });
  });

  it("should show correct message if there is no changeset", async () => {
    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/issues/1/comments")
      .reply(200, []);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/files")
      .reply(200, [{ filename: "index.js", status: "added" }]);

    nock("https://api.github.com")
      .get("/repos/pyu/testing-things/pulls/1/commits")
      .reply(200, [{ sha: "ABCDE" }]);

    nock("https://api.github.com")
      .post("/repos/pyu/testing-things/issues/1/comments", ({ body }) => {
        expect(body).toEqual(outdent`
          ###  💥  No Changeset

          Latest commit: ABCDE

          Merging this PR will not cause any packages to be released. If these changes should not cause updates to packages in this repo, this is fine 🙂

          **If these changes should be published to npm, you need to add a changeset.**

          [Click here to learn what changesets are, and how to add one](https://github.com/Noviny/changesets/blob/master/docs/adding-a-changeset.md).`);
        return true;
      })
      .reply(200);

    await probot.receive({
      name: "pull_request",
      payload: pullRequestOpen
    });
  });

  it("shouldn't add a comment to a release pull request", async () => {
    nock("https://api.github.com").reply(() => {
      // shouldn't reach this, but if it does - let it fail
      expect(true).toBe(false);
    });

    await probot.receive({
      name: "pull_request",
      payload: releasePullRequestOpen
    });
  });
});