Update Cypress test "Button "Continue" in label editor". (#3064)

Update cypress command.

tests/cypress/integration/actions_tasks_objects/case_33_button_continue_label_editor.js

@@ -1,4 +1,4 @@
-// Copyright (C) 2020 Intel Corporation
+// Copyright (C) 2020-2021 Intel Corporation
 //
 // SPDX-License-Identifier: MIT
 
@@ -30,5 +30,14 @@ context('Button "Continue" in label editor.', () => {
                 expect(labelNames).to.include(additionalLabels[2]);
             });
         });
+
+        it('Try add label with empty name. Alert should be visible.', () => {
+            cy.get('.cvat-constructor-viewer-new-item').click();
+            cy.get('.cvat-label-constructor-creator').within(() => {
+                cy.contains('button', 'Continue').click();
+                cy.contains('[role="alert"]', 'Please specify a name').should('be.visible');
+                cy.contains('button', 'Cancel').click();
+            });
+        });
     });
 });

tests/cypress/support/commands.js

@@ -541,7 +541,7 @@ Cypress.Commands.add('addNewLabel', (newLabelName, additionalAttrs, labelColor)
 Cypress.Commands.add('addNewLabelViaContinueButton', (additionalLabels) => {
     cy.collectLabelsName().then((labelsNames) => {
         if (additionalLabels.some((el) => labelsNames.indexOf(el) === -1)) {
-            cy.contains('button', 'Add label').click();
+            cy.get('.cvat-constructor-viewer-new-item').click();
             for (let j = 0; j < additionalLabels.length; j++) {
                 cy.get('[placeholder="Label name"]').type(additionalLabels[j]);
                 if (j !== additionalLabels.length - 1) {