HeinHtetNaing : FrontEnd Test

.gitignore

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+# 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*

debug.log

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package.json

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+{
+  "name": "logintest",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@material-ui/core": "^4.11.0",
+    "@testing-library/jest-dom": "^4.2.4",
+    "@testing-library/user-event": "^7.2.1",
+    "node-fetch": "^2.6.0",
+    "node-sass": "^4.14.1",
+    "react": "^16.13.1",
+    "react-dom": "^16.13.1",
+    "react-router-dom": "^5.2.0",
+    "react-scripts": "3.4.3"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": "react-app"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  },
+  "devDependencies": {
+    "@testing-library/react": "^9.5.0",
+    "jest": "^24.9.0"
+  }
+}

public/index.html

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+<!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
+      href="https://fonts.googleapis.com/css2?family=Roboto+Condensed&display=swap"
+      rel="stylesheet"
+    />
+    <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>

public/manifest.json

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+{
+  "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"
+}

public/robots.txt

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+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

src/Components/HomePage/_test_/home.test.js

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+import { increase } from "../increment";
+import { decrease } from "../decrement";
+
+const getData = jest.fn(async () => {
+  return Promise.resolve({
+    json: () =>
+      Promise.resolve([
+        {
+          id: 1,
+          name: "cerulean",
+          year: 2000,
+          color: "#98B2D1",
+          pantone_value: "15-4020",
+        },
+        {
+          id: 2,
+          name: "fuchsia rose",
+          year: 2001,
+          color: "#C74375",
+          pantone_value: "17-2031",
+        },
+      ]),
+  });
+});
+
+test("api calls", async () => {
+  let response = await getData("https://reqres.in/api/unknown");
+  let data = await response.json();
+
+  expect(data[0].id).toBe(1);
+  expect(data[0].name).toBe("cerulean");
+  expect(data[1].id).toBe(2);
+  expect(data[1].name).toBe("fuchsia rose");
+});
+
+test("next button increments index", () => {
+  expect(increase(1, 6)).toBe(2);
+  expect(increase(5, 6)).toBe(0);
+});
+
+test("back button decrements index", () => {
+  expect(decrease(1, 6)).toBe(0);
+  expect(decrease(0, 6)).toBe(5);
+});

src/Components/HomePage/data.js

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+import fetch from "node-fetch";
+
+const getData = async (link) => {
+  const json = await fetch(link);
+  const data = await json.json();
+
+  return data.data;
+};
+
+export { getData };

src/Components/HomePage/decrement.js

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+const decrease = (num, length) => {
+  return num - 1 < 0 ? (num = length - 1) : num - 1;
+};
+
+export { decrease };

src/Components/HomePage/home.js

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+import React, { useEffect, useState } from "react";
+
+import { NavLink } from "react-router-dom";
+import Butt from "../button/Button";
+
+import { getData } from "./data";
+import { increase } from "./increment";
+import { decrease } from "./decrement";
+
+import "./home.scss";
+
+export default function Home(props) {
+  const setAppState = props.setAppState;
+  const [num, setNum] = useState(0);
+
+  const [data, setData] = useState({
+    color: "",
+    id: 0,
+    name: "",
+    pantoneValue: 0,
+    year: 0,
+    total: 0,
+  });
+  const url = "https://reqres.in/api/unknown";
+
+  const increment = () => {
+    let newNum = increase(num, data.total);
+    setNum(newNum);
+  };
+
+  const decrement = () => {
+    let newNum = decrease(num, data.total);
+    setNum(newNum);
+  };
+
+  useEffect(() => {
+    getData(url).then((response) => {
+      setData({
+        color: response[num].color,
+        id: response[num].id,
+        name: response[num].name,
+        pantoneValue: response[num].pantoneValue,
+        year: response[num].year,
+        total: response.length,
+      });
+    });
+  }, [num]);
+
+  return (
+    <div className="container">
+      <div className="Data" data-testid="data">
+        <div>Name : {data.name}</div>
+        <div data-testid="id">Id : {data.id}</div>
+        <div>Pantone Value : {data.pantoneValue}</div>
+        <div>Color : {data.color}</div>
+        <div>Year : {data.year}</div>
+
+        <div className="buttgroup">
+          <Butt text="Back" function={decrement} />
+          <Butt text="Next" function={increment} />
+        </div>
+        <NavLink className="link" exact to={process.env.PUBLIC_URL + "/login"}>
+          <Butt
+            text="Log Out"
+            function={() => {
+              setAppState({ loading: false, logged: false, msg: "" });
+            }}
+          />
+        </NavLink>
+      </div>
+    </div>
+  );
+}

src/Components/HomePage/home.scss

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+.container {
+  height: 100%;
+  width: 100%;
+
+  .Data {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    text-align: center;
+
+    div {
+      margin: 15px;
+    }
+
+    .buttgroup {
+      margin: 30px 0 5px 0;
+
+      Button {
+        margin: 5px;
+      }
+    }
+  }
+}

src/Components/HomePage/increment.js

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+const increase = (num, length) => {
+  return (num + 1) % length;
+};
+
+export { increase };

src/Components/LandingPage/LandingPage.js

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+import React from "react";
+import { NavLink } from "react-router-dom";
+import Butt from "../button/Button";
+
+import "./Landingpage.scss";
+
+export default function Landing() {
+  return (
+    <div className="lp">
+      <NavLink className="link" exact to={process.env.PUBLIC_URL + "/login"}>
+        <Butt text="Get Started" />
+      </NavLink>
+    </div>
+  );
+}

src/Components/LandingPage/Landingpage.scss

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+.lp {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+
+  .link {
+    text-decoration: none;
+  }
+}

src/Components/LandingPage/_test_/LandingPage.test.js

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+import React from "react";
+import ReactDOm from "react";
+import { BrowserRouter } from "react-router-dom";
+
+import LandingPage from "../LandingPage";
+
+import { render, fireEvent } from "@testing-library/react";
+
+test("render the correct contemt", () => {
+  const { getByText } = render(
+    <BrowserRouter>
+      <LandingPage />
+    </BrowserRouter>
+  );
+
+  getByText("Get Started");
+});