nadvolod · nadvolod · Dec 12, 2021 · Dec 12, 2021 · Dec 12, 2021 · Dec 12, 2021
diff --git a/README.md b/README.md
@@ -1,6 +1,8 @@
 # js-code
+
 Useful code and practice of JavaScript
 
 ## TOC
 
-* [Test React components using component tests](./testing-js/react-components/test-app/)
+- [Test React components using component tests](./testing-js/react-components/test-app/)
+- [Tic tac toe game](./tic-tac-toe/README.md)
diff --git a/tic-tac-toe/.env b/tic-tac-toe/.env
@@ -0,0 +1 @@
+CHOKIDAR_USEPOLLING=true
diff --git a/tic-tac-toe/.gitignore b/tic-tac-toe/.gitignore
@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
diff --git a/tic-tac-toe/README.md b/tic-tac-toe/README.md
@@ -0,0 +1,13 @@
+# Tic Tac Toe Game
+
+[Following ReactJs tutorial](https://reactjs.org/tutorial/tutorial.html)
+
+## Testing
+
+- visual tests with [wdio](https://webdriver.io/docs/gettingstarted/)
+
+```js
+npm init wdio .
+```
+
+1. What are all the tests that we need to write to ensure bug free code?
diff --git a/tic-tac-toe/package.json b/tic-tac-toe/package.json
@@ -0,0 +1,46 @@
+{
+    "name": "tic-tac-toe",
+    "version": "0.1.0",
+    "private": true,
+    "dependencies": {
+        "@testing-library/jest-dom": "^5.16.1",
+        "@testing-library/react": "^11.2.7",
+        "@testing-library/user-event": "^12.8.3",
+        "react": "^17.0.2",
+        "react-dom": "^17.0.2",
+        "react-scripts": "4.0.3",
+        "web-vitals": "^1.1.2"
+    },
+    "scripts": {
+        "start": "react-scripts start",
+        "build": "react-scripts build",
+        "test": "react-scripts test",
+        "eject": "react-scripts eject",
+        "wdio": "wdio run wdio.conf.js"
+    },
+    "eslintConfig": {
+        "extends": [
+            "react-app",
+            "react-app/jest"
+        ]
+    },
+    "browserslist": {
+        "production": [
+            ">0.2%",
+            "not dead",
+            "not op_mini all"
+        ],
+        "development": [
+            "last 1 chrome version",
+            "last 1 firefox version",
+            "last 1 safari version"
+        ]
+    },
+    "devDependencies": {
+        "@wdio/cli": "^7.16.11",
+        "@wdio/local-runner": "^7.16.11",
+        "@wdio/mocha-framework": "^7.16.11",
+        "@wdio/sauce-service": "^7.16.11",
+        "@wdio/spec-reporter": "^7.16.11"
+    }
+}
diff --git a/tic-tac-toe/public/favicon.ico b/tic-tac-toe/public/favicon.ico
diff --git a/tic-tac-toe/public/index.html b/tic-tac-toe/public/index.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>
diff --git a/tic-tac-toe/public/logo192.png b/tic-tac-toe/public/logo192.png
diff --git a/tic-tac-toe/public/logo512.png b/tic-tac-toe/public/logo512.png
diff --git a/tic-tac-toe/public/manifest.json b/tic-tac-toe/public/manifest.json
@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
diff --git a/tic-tac-toe/public/robots.txt b/tic-tac-toe/public/robots.txt
@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:
diff --git a/tic-tac-toe/src/index.css b/tic-tac-toe/src/index.css
@@ -0,0 +1,51 @@
+body {
+  font: 14px "Century Gothic", Futura, sans-serif;
+  margin: 20px;
+}
+
+ol,
+ul {
+  padding-left: 30px;
+}
+
+.board-row:after {
+  clear: both;
+  content: "";
+  display: table;
+}
+
+.status {
+  margin-bottom: 10px;
+}
+
+.square {
+  background: #fff;
+  border: 1px solid #999;
+  float: left;
+  font-size: 24px;
+  font-weight: bold;
+  line-height: 34px;
+  height: 34px;
+  margin-right: -1px;
+  margin-top: -1px;
+  padding: 0;
+  text-align: center;
+  width: 34px;
+}
+
+.square:focus {
+  outline: none;
+}
+
+.kbd-navigation .square:focus {
+  background: #ddd;
+}
+
+.game {
+  display: flex;
+  flex-direction: row;
+}
+
+.game-info {
+  margin-left: 20px;
+}
diff --git a/tic-tac-toe/src/index.js b/tic-tac-toe/src/index.js
@@ -0,0 +1,134 @@
+import React from "react";
+import ReactDOM from "react-dom";
+import "./index.css";
+
+function Square(props) {
+  //no more render()
+  return (
+    //no more this.props and no more ()=> onClick(), instead onClick
+    <button
+      data-testid={props.testid}
+      className="square"
+      onClick={props.onClick}
+    >
+      {props.value}
+    </button>
+  );
+}
+
+/**
+ * the best approach is to store the game’s state in the parent Board
+ * component instead of in each Square.
+ * The Board component can tell each Square what to display
+ * by passing a prop
+ * To collect data from multiple children,
+ * or to have two child components communicate with each other,
+ * you need to declare the shared state in their parent component instead.
+ *  The parent component can pass the state back down to the children
+ * by using props;
+ * this keeps the child components in sync with each other
+ * and with the parent component.
+ */
+class Board extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+      squares: Array(9).fill(null),
+      xIsNext: true,
+    };
+  }
+  handleClick(i) {
+    const squares = this.state.squares.slice();
+    if (calculateWinner(squares) || squares[i]) {
+      return;
+    }
+    squares[i] = this.state.xIsNext ? "X" : "O";
+    this.setState({ squares: squares, xIsNext: !this.state.xIsNext });
+  }
+  renderSquare(i) {
+    return (
+      // Now we’re passing down two props from Board to Square:
+      // value and onClick.
+      // The onClick prop is a function that Square can call when clicked.
+      <Square
+        value={this.state.squares[i]}
+        onClick={() => this.handleClick(i)}
+        testid={i}
+      />
+    );
+  }
+
+  //The render method returns a description of what you want to see on the screen
+  render() {
+    const winner = calculateWinner(this.state.squares);
+    let status;
+    if (winner) {
+      status = "Winner " + winner;
+    } else {
+      status = "Next player: " + (this.state.xIsNext ? "X" : "O");
+    }
+
+    return (
+      <div>
+        <div className="status">{status}</div>
+        <div className="board-row">
+          {this.renderSquare(0)}
+          {this.renderSquare(1)}
+          {this.renderSquare(2)}
+        </div>
+        <div className="board-row">
+          {this.renderSquare(3)}
+          {this.renderSquare(4)}
+          {this.renderSquare(5)}
+        </div>
+        <div className="board-row">
+          {this.renderSquare(6)}
+          {this.renderSquare(7)}
+          {this.renderSquare(8)}
+        </div>
+      </div>
+    );
+  }
+}
+
+class Game extends React.Component {
+  render() {
+    return (
+      <div className="game">
+        <div className="game-board">
+          <Board />
+          <p>Built, tested, and deployed with ❤️ by Nikolay Advolodkin</p>
+          <a href="http://ultimateqa.com">ultimateqa</a>
+        </div>
+        <div className="game-info">
+          <div>{/* status */}</div>
+          <ol>{/* TODO */}</ol>
+        </div>
+      </div>
+    );
+  }
+}
+
+// ========================================
+
+ReactDOM.render(<Game />, document.getElementById("root"));
+
+function calculateWinner(squares) {
+  const lines = [
+    [0, 1, 2],
+    [3, 4, 5],
+    [6, 7, 8],
+    [0, 3, 6],
+    [1, 4, 7],
+    [2, 5, 8],
+    [0, 4, 8],
+    [2, 4, 6],
+  ];
+  for (let i = 0; i < lines.length; i++) {
+    const [a, b, c] = lines[i];
+    if (squares[a] && squares[a] === squares[b] && squares[a] === squares[c]) {
+      return squares[a];
+    }
+  }
+  return null;
+}
diff --git a/tic-tac-toe/test/specs/visual.spec.js b/tic-tac-toe/test/specs/visual.spec.js
@@ -0,0 +1,17 @@
+describe("Tic tac toe game", () => {
+  it("should look correct", async () => {
+    await browser.url(``);
+    await browser.execute("/*@visual.init*/", "Tic Tac Toe");
+    await browser.execute("/*@visual.snapshot*/", "Empty State");
+
+    await $('[data-testid="0"]').click();
+    await $('[data-testid="3"]').click();
+    await $('[data-testid="1"]').click();
+    await $('[data-testid="4"]').click();
+    await $('[data-testid="2"]').click();
+    await browser.execute("/*@visual.snapshot*/", "X is Winner");
+
+    const result = await browser.execute("/*@visual.end*/");
+    expect(result.message).toBeNull();
+  });
+});