Chore/testing library

test/license.spec.js

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+import React from 'react'
+import { render, screen } from '@testing-library/react-native'
+import License from '../components/License'
+
+jest.mock('../local-storage', () => ({ saveLicenseFlag: jest.fn() }))
+
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (str, options) => {
+      return str + (options ? JSON.stringify(options) : '')
+    },
+  }),
+}))
+
+describe('License screen', () => {
+  test('It should have a correct year', async () => {
+    render(<License setLicense={() => {}} />)
+    const year = new Date().getFullYear().toString()
+    screen.getByText(year, { exact: false })
+  })
+})

test/logo.spec.js

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+import * as React from 'react'
+import { render, screen } from '@testing-library/react-native'
+import Logo from '../components/header/logo'
+
+describe('Logo', () => {
+  test('It works', async () => {
+    render(<Logo />)
+    screen.getByText('drip.')
+  })
+})