Cypress test. Creating a label with existing label name. (#2705)

tests/cypress/integration/actions_tasks_objects/case_43_create_label_with_existing_label_name.js

@@ -0,0 +1,34 @@
+// Copyright (C) 2021 Intel Corporation
+//
+// SPDX-License-Identifier: MIT
+
+/// <reference types="cypress" />
+
+import { taskName } from '../../support/const';
+
+context('Creating a label with existing label name.', () => {
+    const caseId = '43';
+    let firstLabelName = '';
+
+    before(() => {
+        cy.openTask(taskName);
+    });
+
+    describe(`Testing case "${caseId}"`, () => {
+        it('Try to create a label with existing name. Should not be successful.', () => {
+            // Get the name of the first existing label.
+            cy.get('.cvat-constructor-viewer-item')
+                .first()
+                .then((firstLabel) => {
+                    firstLabelName = firstLabel.text();
+                    // Try to create a label with existing label name
+                    cy.get('.cvat-constructor-viewer-new-item').click();
+                    cy.get('[placeholder="Label name"]').type(firstLabelName);
+                    cy.contains('[type="submit"]', 'Done').click();
+                });
+            cy.get('.cvat-notification-notice-update-task-failed')
+                .should('exist')
+                .and('contain.text', 'label names must be unique');
+        });
+    });
+});