├── .gitignore
├── README.md
├── package.json
├── public
├── favicon.ico
├── index.html
├── logo192.png
├── logo512.png
├── manifest.json
└── robots.txt
├── src
├── App.js
├── components
│ └── Counter
│ │ ├── Counter.test.js
│ │ ├── index.css
│ │ └── index.js
├── index.css
├── index.js
└── setupTests.js
└── yarn.lock
/.gitignore:
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1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
2 |
3 | # dependencies
4 | /node_modules
5 | /.pnp
6 | .pnp.js
7 |
8 | # testing
9 | /coverage
10 |
11 | # production
12 | /build
13 |
14 | # misc
15 | .DS_Store
16 | .env.local
17 | .env.development.local
18 | .env.test.local
19 | .env.production.local
20 |
21 | npm-debug.log*
22 | yarn-debug.log*
23 | yarn-error.log*
24 |
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/README.md:
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1 | # Testando componentes react
2 |
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/package.json:
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1 | {
2 | "name": "react-test-component",
3 | "version": "0.1.0",
4 | "private": true,
5 | "dependencies": {
6 | "@testing-library/jest-dom": "^5.11.4",
7 | "@testing-library/react": "^11.1.0",
8 | "@testing-library/user-event": "^12.1.10",
9 | "react": "^17.0.1",
10 | "react-dom": "^17.0.1",
11 | "react-scripts": "4.0.3",
12 | "web-vitals": "^1.0.1"
13 | },
14 | "scripts": {
15 | "start": "react-scripts start",
16 | "build": "react-scripts build",
17 | "test": "react-scripts test",
18 | "eject": "react-scripts eject"
19 | },
20 | "eslintConfig": {
21 | "extends": [
22 | "react-app",
23 | "react-app/jest"
24 | ]
25 | },
26 | "browserslist": {
27 | "production": [
28 | ">0.2%",
29 | "not dead",
30 | "not op_mini all"
31 | ],
32 | "development": [
33 | "last 1 chrome version",
34 | "last 1 firefox version",
35 | "last 1 safari version"
36 | ]
37 | }
38 | }
39 |
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/public/favicon.ico:
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https://raw.githubusercontent.com/washingtondeveloper/youtube-react-test-component/e26dcde72952fbc615454d3d4bd6627721b79956/public/favicon.ico
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/public/index.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
12 |
13 |
17 |
18 |
27 | React App
28 |
29 |
30 |
31 |
32 |
42 |
43 |
44 |
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/public/logo192.png:
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https://raw.githubusercontent.com/washingtondeveloper/youtube-react-test-component/e26dcde72952fbc615454d3d4bd6627721b79956/public/logo192.png
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/public/logo512.png:
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https://raw.githubusercontent.com/washingtondeveloper/youtube-react-test-component/e26dcde72952fbc615454d3d4bd6627721b79956/public/logo512.png
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/public/manifest.json:
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1 | {
2 | "short_name": "React App",
3 | "name": "Create React App Sample",
4 | "icons": [
5 | {
6 | "src": "favicon.ico",
7 | "sizes": "64x64 32x32 24x24 16x16",
8 | "type": "image/x-icon"
9 | },
10 | {
11 | "src": "logo192.png",
12 | "type": "image/png",
13 | "sizes": "192x192"
14 | },
15 | {
16 | "src": "logo512.png",
17 | "type": "image/png",
18 | "sizes": "512x512"
19 | }
20 | ],
21 | "start_url": ".",
22 | "display": "standalone",
23 | "theme_color": "#000000",
24 | "background_color": "#ffffff"
25 | }
26 |
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/public/robots.txt:
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1 | # https://www.robotstxt.org/robotstxt.html
2 | User-agent: *
3 | Disallow:
4 |
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/src/App.js:
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1 | import Counter from "./components/Counter";
2 |
3 | function App() {
4 | return ;
5 | }
6 |
7 | export default App;
8 |
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/src/components/Counter/Counter.test.js:
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1 | import { render, screen } from "@testing-library/react";
2 | import userEvent from "@testing-library/user-event";
3 | import Counter from ".";
4 |
5 | describe("Counter Component", () => {
6 | test("deve iniciar o titulo com o valor 0", () => {
7 | render();
8 |
9 | const counterTitle = screen.getByText("0");
10 |
11 | expect(counterTitle).toBeInTheDocument();
12 | });
13 |
14 | test("deve conter a classe counter__title no titulo", () => {
15 | render();
16 |
17 | const counterTitle = screen.getByText("0");
18 |
19 | expect(counterTitle).toHaveClass("counter__title");
20 | });
21 |
22 | test("não deve iniciar o titulo com as classes counter__title--increment e counter__title--decrement", () => {
23 | render();
24 |
25 | const counterTitle = screen.getByText("0");
26 |
27 | expect(counterTitle).not.toHaveClass("counter__title--increment");
28 | expect(counterTitle).not.toHaveClass("counter__title--decrement");
29 | });
30 |
31 | test("deve conter um botão incrementar", () => {
32 | render();
33 |
34 | const buttonIncrement = screen.getByRole("button", {
35 | name: /incrementar/i,
36 | });
37 |
38 | expect(buttonIncrement).toBeInTheDocument();
39 | });
40 |
41 | test("deve conter um botão incrementar com as classes button e button--increment", () => {
42 | render();
43 |
44 | const buttonIncrement = screen.getByRole("button", {
45 | name: /incrementar/i,
46 | });
47 |
48 | expect(buttonIncrement).toHaveClass("button");
49 | expect(buttonIncrement).toHaveClass("button--increment");
50 | });
51 |
52 | test("deve conter um botão decrementar", () => {
53 | render();
54 |
55 | const buttonDecrement = screen.getByRole("button", {
56 | name: /decrementar/i,
57 | });
58 |
59 | expect(buttonDecrement).toBeInTheDocument();
60 | });
61 |
62 | test("deve conter um botão decrementar com as classes button e button--decrement", () => {
63 | render();
64 |
65 | const buttonDecrement = screen.getByRole("button", {
66 | name: /decrementar/i,
67 | });
68 |
69 | expect(buttonDecrement).toHaveClass("button");
70 | expect(buttonDecrement).toHaveClass("button--decrement");
71 | });
72 |
73 | test("deve incrementar + 1 ao clicar no botão incrementar", () => {
74 | render();
75 |
76 | const buttonIncrement = screen.getByRole("button", {
77 | name: /incrementar/i,
78 | });
79 |
80 | expect(screen.queryByText("1")).toBeNull();
81 | userEvent.click(buttonIncrement);
82 | expect(screen.getByText("1")).toBeInTheDocument();
83 | });
84 |
85 | test("deve decrementar - 1 ao clicar no botão decrementar", () => {
86 | render();
87 |
88 | const buttonDecrement = screen.getByRole("button", {
89 | name: /decrementar/i,
90 | });
91 |
92 | expect(screen.queryByText("-1")).toBeNull();
93 | userEvent.click(buttonDecrement);
94 | expect(screen.getByText("-1")).toBeInTheDocument();
95 | });
96 |
97 | test("deve adicionar a classe counter__title--increment no titulo, quando o valor for maior do que 0", () => {
98 | render();
99 |
100 | const buttonIncrement = screen.getByRole("button", {
101 | name: /incrementar/i,
102 | });
103 |
104 | expect(screen.queryByText("0")).not.toHaveClass(
105 | "counter__title--increment"
106 | );
107 | userEvent.click(buttonIncrement);
108 | expect(screen.getByText("1")).toHaveClass("counter__title--increment");
109 | });
110 |
111 | test("deve adicionar a classe counter__title--decrement no titulo, quando o valor for menor do que 0", () => {
112 | render();
113 |
114 | const buttonDecrement = screen.getByRole("button", {
115 | name: /decrementar/i,
116 | });
117 |
118 | expect(screen.queryByText("0")).not.toHaveClass(
119 | "counter__title--decrement"
120 | );
121 | userEvent.click(buttonDecrement);
122 | expect(screen.getByText("-1")).toHaveClass("counter__title--decrement");
123 | });
124 | });
125 |
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/src/components/Counter/index.css:
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1 | .counter {
2 | height: 100%;
3 |
4 | display: flex;
5 | align-items: center;
6 | justify-content: center;
7 | flex-direction: column;
8 | }
9 |
10 | .counter__title {
11 | font-size: 95px;
12 | }
13 |
14 | .counter__title--increment {
15 | color: var(--color-button-increment);
16 | }
17 | .counter__title--decrement {
18 | color: var(--color-button-decrement);
19 | }
20 |
21 | .buttons {
22 | display: flex;
23 | }
24 |
25 | .button {
26 | width: 180px;
27 | height: 45px;
28 |
29 | border: none;
30 | border-radius: 6px;
31 | background-color: var(--color-button-default);
32 | font-weight: bold;
33 | text-transform: uppercase;
34 |
35 | margin: 5px;
36 | }
37 |
38 | .button:hover {
39 | background-color: var(--color-button-default-hover);
40 | }
41 |
42 | .button--increment {
43 | background-color: var(--color-button-increment);
44 | color: var(--color-white);
45 | outline-color: var(--color-button-increment-outline);
46 | cursor: pointer;
47 | }
48 | .button--increment:hover {
49 | background-color: var(--color-button-increment-hover);
50 | }
51 |
52 | .button--decrement {
53 | background-color: var(--color-button-decrement);
54 | color: var(--color-white);
55 | outline-color: var(--color-button-decrement-outline);
56 | cursor: pointer;
57 | }
58 | .button--decrement:hover {
59 | background-color: var(--color-button-decrement-hover);
60 | }
61 |
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/src/components/Counter/index.js:
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1 | import React, { useState } from "react";
2 | import "./index.css";
3 |
4 | function Counter() {
5 | const [counter, setCounter] = useState(0);
6 |
7 | function getModifier() {
8 | if (counter > 0) return "counter__title--increment";
9 | if (counter < 0) return "counter__title--decrement";
10 | return "";
11 | }
12 |
13 | return (
14 |
15 |
{counter}
16 |
17 |
23 |
29 |
30 |
31 | );
32 | }
33 |
34 | export default Counter;
35 |
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/src/index.css:
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1 | * {
2 | margin: 0;
3 | padding: 0;
4 | box-sizing: border-box;
5 | }
6 |
7 | :root {
8 | --color-button-default: #f1f1f1;
9 | --color-button-default-hover: #d3d2d2;
10 | --color-button-increment: #41cc1f;
11 | --color-button-decrement: #f02727;
12 | --color-button-increment-hover: #38ad1b;
13 | --color-button-decrement-hover: #d12020;
14 | --color-button-increment-outline: #2e9615;
15 | --color-button-decrement-outline: #8b1414;
16 |
17 | --color-white: #fff;
18 | }
19 |
20 | html,
21 | body,
22 | #root {
23 | height: 100%;
24 | }
25 |
26 | body {
27 | font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
28 | "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
29 | sans-serif;
30 | -webkit-font-smoothing: antialiased;
31 | -moz-osx-font-smoothing: grayscale;
32 | }
33 |
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/src/index.js:
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1 | import React from "react";
2 | import ReactDOM from "react-dom";
3 | import App from "./App";
4 |
5 | import "./index.css";
6 |
7 | ReactDOM.render(
8 |
9 |
10 | ,
11 | document.getElementById("root")
12 | );
13 |
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/src/setupTests.js:
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1 | // jest-dom adds custom jest matchers for asserting on DOM nodes.
2 | // allows you to do things like:
3 | // expect(element).toHaveTextContent(/react/i)
4 | // learn more: https://github.com/testing-library/jest-dom
5 | import '@testing-library/jest-dom';
6 |
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