Merge branch 'testing'

.babelrc

@@ -0,0 +1,8 @@
+{
+  "presets": ["@babel/preset-env"],
+  "plugins": [
+    "babel-plugin-transform-vite-meta-env",
+    ["module-resolver", { "root": ["./src"] }],
+    ["inline-dotenv", { "path": ".env.test", "unsafe": true }]
+  ]
+}

.eslintrc

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+{
+  "env": {
+    "browser": true,
+    "es2021": true,
+    "jest": true
+  },
+  "extends": [
+    "plugin:react/recommended",
+    "standard"
+  ],
+  "parserOptions": {
+    "ecmaFeatures": {
+      "jsx": true
+    },
+    "ecmaVersion": 12,
+    "sourceType": "module"
+  },
+  "plugins": [
+    "react",
+    "react-hooks",
+    "jest"
+  ],
+  "rules": {
+    "comma-dangle": ["error", {
+      "arrays": "always-multiline",
+      "objects": "always-multiline",
+      "imports": "always-multiline",
+      "exports": "always-multiline",
+      "functions": "never"
+    }],
+    "max-len": ["error", { "code": 90 }],
+    "no-console": ["warn", { "allow": ["error"] }],
+    "react/react-in-jsx-scope": "off",
+    "react-hooks/rules-of-hooks": "error",
+    "react-hooks/exhaustive-deps": "warn"
+  },
+  "settings": {
+    "react": {
+      "version": "detect"
+    }
+  }
+}

.gitignore

@@ -1,5 +1,5 @@
 .vscode
-*.local
+.env.*
 dist
 dist-ssr
 node_modules

.husky/.gitignore

@@ -0,0 +1 @@
+_

.husky/pre-commit

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+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npm test

__tests__/utils/randomNumbers.test.js

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+import { getRandomNumbersFactory } from 'utils/randomNumbers'
+
+describe('getRandomNumbersFactory', () => {
+  test('should return a numbers factory', () => {
+    const getNumbers = getRandomNumbersFactory()
+    expect(typeof getNumbers).toBe('function')
+  })
+
+  test('should return an array of one number', () => {
+    const getNumbers = getRandomNumbersFactory()
+    const numbers = getNumbers()
+    expect(Array.isArray(numbers)).toBe(true)
+  })
+
+  test('should return a single random number', () => {
+    const getNumbers = getRandomNumbersFactory()
+    const numbers = getNumbers()
+    expect(numbers.length).toBe(1)
+    expect(numbers[0]).toBeGreaterThanOrEqual(0)
+    expect(numbers[0]).toBeLessThanOrEqual(1000)
+  })
+
+  test('should return array with exact length', () => {
+    const getNumbers = getRandomNumbersFactory(10, 10)
+    const numbers = getNumbers()
+    expect(numbers).toHaveLength(10)
+  })
+
+  test('should return array of different numbers', () => {
+    const getNumbers = getRandomNumbersFactory(100, 100)
+    const numbers = getNumbers()
+    const withoutRepeated = numbers.reduce(
+      (acc, number) => acc.includes(number) ? acc : acc.concat(number),
+      []
+    )
+    expect(numbers.length).toBeGreaterThanOrEqual(withoutRepeated.length)
+  })
+
+  test('should return numbers between bounds', () => {
+    const getNumbers = getRandomNumbersFactory(1000, 1000, [[10, 100]])
+    const numbers = getNumbers()
+    expect(numbers.filter(number => number < 10 || number > 100)).toHaveLength(0)
+  })
+
+  test('should return numbers between several bounds', () => {
+    const getNumbers = getRandomNumbersFactory(1000, 1000, [[10, 10], [100, 100]])
+    const numbers = getNumbers()
+    expect(numbers.includes(10)).toBe(true)
+    expect(numbers.includes(100)).toBe(true)
+  })
+
+  test('should return different numbers each time', () => {
+    const getNumbers = getRandomNumbersFactory(1, 1, [[1, 1000]])
+    const numbers1 = getNumbers()
+    const numbers2 = getNumbers()
+    expect(numbers1[0]).not.toBe(numbers2[0])
+  })
+
+  test('should return arrays with different length each time', () => {
+    const getNumbers = getRandomNumbersFactory(1, 1000, [[10, 100]])
+    const numbers1 = getNumbers()
+    const numbers2 = getNumbers()
+    expect(numbers1.length).not.toBe(numbers2.length)
+  })
+})

__tests__/utils/twoDigits.test.js

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+import { twoDigits } from 'utils/twoDigits'
+
+describe('twoDigits', () => {
+  test('should return same number as string', () => {
+    expect(twoDigits(10)).toBe('10')
+  })
+
+  test('should return number with left 0', () => {
+    expect(twoDigits(5)).toBe('05')
+  })
+
+  test('should return last two digits', () => {
+    expect(twoDigits(123)).toBe('23')
+  })
+})

jest.config.js

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+module.exports = {
+  transform: {
+    '^.+\\.jsx?$': 'babel-jest',
+  },
+}

jsconfig.json

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+{
+  "compilerOptions": {
+    "baseUrl": "src",
+  }
+}