Hello, redux-doctitle!

tests/__entry__.js

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+let testsContext = require.context(".", true, /\.spec\.js$/);
+testsContext.keys().forEach(testsContext);

tests/actions.spec.js

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+import {TITLE_ACTIONS_SET} from "src/defs";
+import * as doctitleActions from "src/actions";
+
+describe("actions", () => {
+  describe("setDocumentTitle", () => {
+    it("should create the action", () => {
+      let result = doctitleActions.setDocumentTitle("Spam");
+      expect(result.type).toEqual(TITLE_ACTIONS_SET);
+      expect(result.title).toEqual("Spam");
+    });
+
+    it("should create the action without the custom part", () => {
+      let result = doctitleActions.setDocumentTitle();
+      expect(result.type).toEqual(TITLE_ACTIONS_SET);
+      expect(result.title).toEqual("");
+    });
+  });
+});

tests/middleware.spec.js

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+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);
+    });
+  });
+});