import {TITLE_ACTIONS_SET} from "src/defs";

import * as doctitleMiddleware from "src/middleware";

describe("middleware", () => {
  describe("documentTitleMiddleware", () => {
    let origTitle = null;
    let next = null;

    beforeAll(() => {
      origTitle = window.document.title;
    });

    beforeEach(() => {
      next = jasmine.createSpy("next");
    });

    afterAll(() => {
      window.document.title = origTitle;
    });

    it("should set title to empty if no default parts are specified and custom part is empty", () => {
      let middleware = doctitleMiddleware.documentTitleMiddlewareFactory()(
        undefined, undefined
      );

      let action = {type: TITLE_ACTIONS_SET, title: undefined};
      middleware(next)(action);

      expect(window.document.title).toEqual("");
    });

    it("should not set custom document title if it isn't specified", () => {
      let middleware = doctitleMiddleware.documentTitleMiddlewareFactory(["Test"])(
        undefined, undefined
      );

      let action = {type: TITLE_ACTIONS_SET, title: undefined};
      middleware(next)(action);

      expect(window.document.title).toEqual("Test");
    });

    it("should set custom document title", () => {
      let middleware = doctitleMiddleware.documentTitleMiddlewareFactory(["Test"])(
        undefined, undefined
      );

      let action = {type: TITLE_ACTIONS_SET, title: "Spam"};
      middleware(next)(action);

      expect(window.document.title).toEqual("Spam | Test");
    });

    it("should not call the next middleware if got the setDocumentTitle action", () => {
      let middleware = doctitleMiddleware.documentTitleMiddlewareFactory(["Test"])(
        undefined, undefined
      );

      let action = {type: TITLE_ACTIONS_SET, title: "Spam"};
      middleware(next)(action);

      expect(next).not.toHaveBeenCalled();
    });

    it("should call the next middleware if didn't get the setDocumentTitle action", () => {
      let middleware = doctitleMiddleware.documentTitleMiddlewareFactory(["Test"])(
        undefined, undefined
      );

      let action = {type: "SPAM"};
      middleware(next)(action);

      expect(next).toHaveBeenCalledWith(action);
    });
  });
});