[PM-5189] Implementing jest tests for AutofillInlineMenuContentService

apps/browser/src/autofill/overlay/inline-menu/abstractions/autofill-inline-menu-container.ts

@@ -2,7 +2,7 @@ import { AuthenticationStatus } from "@bitwarden/common/auth/enums/authenticatio
 
 import { InlineMenuCipherData } from "../../../background/abstractions/overlay.background";
 
-type AutofillInlineMenuContainerMessage = {
+export type AutofillInlineMenuContainerMessage = {
   command: string;
   portKey: string;
 };
@@ -18,8 +18,14 @@ export type InitAutofillInlineMenuElementMessage = AutofillInlineMenuContainerMe
   portName: string;
 };
 
+export type AutofillInlineMenuContainerWindowMessage = AutofillInlineMenuContainerMessage &
+  Record<string, unknown>;
+
+export type AutofillInlineMenuContainerPortMessage = AutofillInlineMenuContainerMessage &
+  Record<string, unknown>;
+
 export type AutofillInlineMenuContainerWindowMessageHandlers = {
   [key: string]: CallableFunction;
-  initAutofillInlineMenuList: (message: InitAutofillInlineMenuElementMessage) => void;
   initAutofillInlineMenuButton: (message: InitAutofillInlineMenuElementMessage) => void;
+  initAutofillInlineMenuList: (message: InitAutofillInlineMenuElementMessage) => void;
 };

apps/browser/src/autofill/overlay/inline-menu/pages/menu-container/autofill-inline-menu-container.spec.ts

@@ -0,0 +1,130 @@
+import { AutofillOverlayPort } from "../../../../enums/autofill-overlay.enum";
+import { createPortSpyMock } from "../../../../spec/autofill-mocks";
+import { postWindowMessage } from "../../../../spec/testing-utils";
+
+import { AutofillInlineMenuContainer } from "./autofill-inline-menu-container";
+
+describe("AutofillInlineMenuContainer", () => {
+  const portKey = "testPortKey";
+  const iframeUrl = "https://example.com";
+  const pageTitle = "Example";
+  let autofillInlineMenuContainer: AutofillInlineMenuContainer;
+
+  beforeEach(() => {
+    autofillInlineMenuContainer = new AutofillInlineMenuContainer();
+  });
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe("initializing the inline menu iframe", () => {
+    it("sets the default iframe attributes to the message values", () => {
+      const message = {
+        command: "initAutofillInlineMenuList",
+        iframeUrl,
+        pageTitle,
+        portKey,
+        portName: AutofillOverlayPort.List,
+      };
+
+      postWindowMessage(message);
+
+      expect(autofillInlineMenuContainer["defaultIframeAttributes"].src).toBe(message.iframeUrl);
+      expect(autofillInlineMenuContainer["defaultIframeAttributes"].title).toBe(message.pageTitle);
+      expect(autofillInlineMenuContainer["portName"]).toBe(message.portName);
+    });
+
+    it("sets up a onLoad listener on the iframe that sets up the background port message listener", async () => {
+      const message = {
+        command: "initAutofillInlineMenuButton",
+        iframeUrl,
+        pageTitle,
+        portKey,
+        portName: AutofillOverlayPort.Button,
+      };
+
+      postWindowMessage(message);
+
+      jest.spyOn(autofillInlineMenuContainer["inlineMenuPageIframe"].contentWindow, "postMessage");
+      autofillInlineMenuContainer["inlineMenuPageIframe"].dispatchEvent(new Event("load"));
+
+      expect(chrome.runtime.connect).toHaveBeenCalledWith({ name: message.portName });
+      expect(
+        autofillInlineMenuContainer["inlineMenuPageIframe"].contentWindow.postMessage,
+      ).toHaveBeenCalledWith(message, "*");
+    });
+  });
+
+  describe("handling window messages", () => {
+    let iframe: HTMLIFrameElement;
+    let port: chrome.runtime.Port;
+
+    beforeEach(() => {
+      const message = {
+        command: "initAutofillInlineMenuButton",
+        iframeUrl,
+        pageTitle,
+        portKey,
+        portName: AutofillOverlayPort.Button,
+      };
+
+      postWindowMessage(message);
+
+      iframe = autofillInlineMenuContainer["inlineMenuPageIframe"];
+      jest.spyOn(iframe.contentWindow, "postMessage");
+      port = createPortSpyMock(AutofillOverlayPort.Button);
+      autofillInlineMenuContainer["port"] = port;
+    });
+
+    it("ignores messages that do not contain a portKey", () => {
+      const message = { command: "checkInlineMenuButtonFocused" };
+
+      postWindowMessage(message, "*", iframe.contentWindow as any);
+
+      expect(port.postMessage).not.toHaveBeenCalled();
+    });
+
+    it("ignores messages if the inline menu iframe has not been created", () => {
+      autofillInlineMenuContainer["inlineMenuPageIframe"] = null;
+      const message = { command: "checkInlineMenuButtonFocused", portKey };
+
+      postWindowMessage(message, "*", iframe.contentWindow as any);
+
+      expect(port.postMessage).not.toHaveBeenCalled();
+    });
+
+    it("ignores messages that do not come from either the parent frame or the inline menu iframe", () => {
+      const randomIframe = document.createElement("iframe");
+      const message = { command: "checkInlineMenuButtonFocused", portKey };
+
+      postWindowMessage(message, "*", randomIframe.contentWindow as any);
+
+      expect(port.postMessage).not.toHaveBeenCalled();
+    });
+
+    it("ignores messages that come from an invalid origin", () => {
+      const message = { command: "checkInlineMenuButtonFocused", portKey };
+
+      postWindowMessage(message, "https://example.com", iframe.contentWindow as any);
+
+      expect(port.postMessage).not.toHaveBeenCalled();
+    });
+
+    it("posts a message to the background from the inline menu iframe", () => {
+      const message = { command: "checkInlineMenuButtonFocused", portKey };
+
+      postWindowMessage(message, "null", iframe.contentWindow as any);
+
+      expect(port.postMessage).toHaveBeenCalledWith(message);
+    });
+
+    it("posts a message to the inline menu iframe from the parent", () => {
+      const message = { command: "checkInlineMenuButtonFocused", portKey };
+
+      postWindowMessage(message);
+
+      expect(iframe.contentWindow.postMessage).toHaveBeenCalledWith(message, "*");
+    });
+  });
+});

apps/browser/src/autofill/overlay/inline-menu/pages/menu-container/autofill-inline-menu-container.ts

@@ -4,9 +4,12 @@ import { setElementStyles } from "../../../../utils";
 import {
   InitAutofillInlineMenuElementMessage,
   AutofillInlineMenuContainerWindowMessageHandlers,
+  AutofillInlineMenuContainerWindowMessage,
+  AutofillInlineMenuContainerPortMessage,
 } from "../../abstractions/autofill-inline-menu-container";
 
 export class AutofillInlineMenuContainer {
+  private setElementStyles = setElementStyles;
   private extensionOriginsSet: Set<string>;
   private port: chrome.runtime.Port | null = null;
   private portName: string;
@@ -37,8 +40,8 @@ export class AutofillInlineMenuContainer {
     tabIndex: "-1",
   };
   private windowMessageHandlers: AutofillInlineMenuContainerWindowMessageHandlers = {
-    initAutofillInlineMenuList: (message) => this.handleInitInlineMenuIframe(message),
     initAutofillInlineMenuButton: (message) => this.handleInitInlineMenuIframe(message),
+    initAutofillInlineMenuList: (message) => this.handleInitInlineMenuIframe(message),
   };
 
   constructor() {
@@ -50,44 +53,67 @@ export class AutofillInlineMenuContainer {
     globalThis.addEventListener("message", this.handleWindowMessage);
   }
 
+  /**
+   * Handles initialization of the iframe used to display the inline menu.
+   *
+   * @param message - The message containing the iframe url and page title.
+   */
   private handleInitInlineMenuIframe(message: InitAutofillInlineMenuElementMessage) {
     this.defaultIframeAttributes.src = message.iframeUrl;
     this.defaultIframeAttributes.title = message.pageTitle;
     this.portName = message.portName;
 
     this.inlineMenuPageIframe = globalThis.document.createElement("iframe");
-    setElementStyles(this.inlineMenuPageIframe, this.iframeStyles, true);
+    this.setElementStyles(this.inlineMenuPageIframe, this.iframeStyles, true);
     for (const [attribute, value] of Object.entries(this.defaultIframeAttributes)) {
       this.inlineMenuPageIframe.setAttribute(attribute, value);
     }
-    this.inlineMenuPageIframe.addEventListener(EVENTS.LOAD, () =>
-      this.setupPortMessageListener(message),
-    );
+    const handleInlineMenuPageIframeLoad = () => {
+      this.inlineMenuPageIframe.removeEventListener(EVENTS.LOAD, handleInlineMenuPageIframeLoad);
+      this.setupPortMessageListener(message);
+    };
+    this.inlineMenuPageIframe.addEventListener(EVENTS.LOAD, handleInlineMenuPageIframeLoad);
 
     globalThis.document.body.appendChild(this.inlineMenuPageIframe);
   }
 
+  /**
+   * Sets up the port message listener for the inline menu page.
+   *
+   * @param message - The message containing the port name.
+   */
   private setupPortMessageListener = (message: InitAutofillInlineMenuElementMessage) => {
     this.port = chrome.runtime.connect({ name: this.portName });
     this.postMessageToInlineMenuPage(message);
   };
 
-  private postMessageToInlineMenuPage(message: any) {
-    if (!this.inlineMenuPageIframe?.contentWindow) {
-      return;
-    }
-
+  /**
+   * Posts a message to the inline menu page iframe.
+   *
+   * @param message - The message to post.
+   */
+  private postMessageToInlineMenuPage(message: AutofillInlineMenuContainerWindowMessage) {
+    if (this.inlineMenuPageIframe?.contentWindow) {
       this.inlineMenuPageIframe.contentWindow.postMessage(message, "*");
     }
-
-  private postMessageToBackground(message: any) {
-    if (!this.port) {
-      return;
   }
 
+  /**
+   * Posts a message from the inline menu iframe to the background script.
+   *
+   * @param message - The message to post.
+   */
+  private postMessageToBackground(message: AutofillInlineMenuContainerPortMessage) {
+    if (this.port) {
       this.port.postMessage(message);
     }
+  }
 
+  /**
+   * Handles window messages, routing them to the appropriate handler.
+   *
+   * @param event - The message event.
+   */
   private handleWindowMessage = (event: MessageEvent) => {
     const message = event.data;
     if (this.isForeignWindowMessage(event)) {
@@ -107,6 +133,13 @@ export class AutofillInlineMenuContainer {
     this.postMessageToBackground(message);
   };
 
+  /**
+   * Identifies if the message is from a foreign window. A foreign window message is
+   * considered as any message that does not have a portKey, is not from the parent window,
+   * or is not from the inline menu page iframe.
+   *
+   * @param event - The message event.
+   */
   private isForeignWindowMessage(event: MessageEvent) {
     if (!event.data.portKey) {
       return true;
@@ -119,10 +152,20 @@ export class AutofillInlineMenuContainer {
     return !this.isMessageFromInlineMenuPageIframe(event);
   }
 
+  /**
+   * Identifies if the message is from the parent window.
+   *
+   * @param event - The message event.
+   */
   private isMessageFromParentWindow(event: MessageEvent): boolean {
     return globalThis.parent === event.source;
   }
 
+  /**
+   * Identifies if the message is from the inline menu page iframe.
+   *
+   * @param event - The message event.
+   */
   private isMessageFromInlineMenuPageIframe(event: MessageEvent): boolean {
     if (!this.inlineMenuPageIframe) {
       return false;