Solution by Bohdanov Daniil

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x]
+        node-version: [14.x]
 
     steps:
     - uses: actions/checkout@v2

package.json

@@ -16,7 +16,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "*",
-    "@mate-academy/scripts": "^1.2.8",
+    "@mate-academy/scripts": "^1.7.9",
     "eslint": "^5.16.0",
     "eslint-plugin-jest": "^22.4.1",
     "eslint-plugin-node": "^8.0.1",

src/pageObject.js

@@ -1,15 +1,35 @@
 'use strict';
 
 class Header {
-
+  constructor() {
+    this.logo = 'Conduit logo';
+  };
 };
 
 class PageObject {
-
+  constructor(url) {
+    this.url = url;
+    this.header = new Header();
+  };
+  clickOnLogo() {
+    return `Click on the ${this.header.logo}`;
+  };
 };
 
 class ArticlePage extends PageObject {
+  constructor(url, slug) {
+    super(url);
+    this.url = url + slug;
+    this.commentButton = '[Publish comment] button';
+  };
+
+  clickOnCommentButton() {
+    return `Click on the ${this.commentButton}`;
+  }
 
+  assertPageOpened() {
+    return `The ${this.url} is opened`;
+  };
 };
 
 module.exports = {