test(e2e): sign in as admin

cypress/e2e/dashboard.cy.ts

@@ -0,0 +1,16 @@
+const exactUrl = (route: string) => `${Cypress.config('baseUrl')}${route}`;
+
+describe('Dashboard', () => {
+    it('asks to sign in on fist visit', () => {
+        cy.visit('/');
+
+        cy.url().should('equal', exactUrl('/api/auth/signin'));
+
+        cy.get('input[name=email]').type(Cypress.env('ADMIN_EMAIL'));
+
+        // {enter} causes the form to submit
+        cy.get('input[name=password]').type(`${Cypress.env('ADMIN_PASSWORD')}{enter}`);
+
+        cy.url().should('equal', exactUrl('/'));
+    });
+});