add cypress test to increase coverage

cypress/e2e/01-block-basics.cy.js

@@ -24,4 +24,30 @@ describe('Blocks Tests', () => {
     cy.contains('My Add-on Page');
     cy.get('.block.image');
   });
+
+  it('Add Hero Block', () => {
+    // Change page title
+    cy.clearSlateTitle();
+    cy.getSlateTitle().type('My Add-on Page');
+    cy.get('.documentFirstHeading').contains('My Add-on Page');
+    cy.getSlate().click();
+
+    // Add block
+    cy.get('.ui.basic.icon.button.block-add-button').first().click();
+    cy.get('.blocks-chooser .title').contains('Common').click();
+    cy.get('.content.active.common .button.hero').contains('Hero').click({ force: true });
+
+    // Configure block
+    cy.getSlate().click().type('Hero Block');
+    cy.get('.ui.checked.toggle.checkbox').contains('Full height').click();
+    cy.get('.ui.toggle.checkbox').contains('Hide publishing date').click();
+
+    // Save
+    cy.get('#toolbar-save').click();
+    cy.url().should('eq', Cypress.config().baseUrl + '/cypress/my-page');
+
+    // then the page view should contain our changes
+    cy.contains('My Add-on Page');
+    cy.get('.hero-block');
+  });
 });