chore: remove jest -> cypress for unit tests

cypress/component/Footer.cy.tsx

@@ -0,0 +1,18 @@
+import { Footer } from 'components/Footer'
+
+describe('<Footer />', () => {
+  it('should render with appropriate link tag version', () => {
+    const version = '1.0.0'
+    cy.mount(<Footer version={version} />)
+    cy.contains('Divlo')
+      .get('[data-cy=version-link]')
+      .should('have.text', version)
+      .should(
+        'have.attr',
+        'href',
+        `https://github.com/Divlo/Divlo/releases/tag/v${version}`
+      )
+  })
+})
+
+export {}

cypress/component/utils/getAge.cy.ts

@@ -0,0 +1,17 @@
+import { getAge } from '../../../utils/getAge'
+
+describe('utils/getAge', () => {
+  it('should calculate the right age of a person', () => {
+    cy.clock(new Date('2018-03-20')).then(() => {
+      const birthDate = new Date('1980-02-20')
+      expect(getAge(birthDate)).equal(38)
+    })
+  })
+
+  it('should calculate the right age of a person (taking into account the months)', () => {
+    cy.clock(new Date('2018-03-20')).then(() => {
+      const birthDate = new Date('1980-07-20')
+      expect(getAge(birthDate)).equal(37)
+    })
+  })
+})