add tests

src/Umbraco.Web.UI.Client/src/shared/utils/utils.test.ts

@@ -0,0 +1,39 @@
+import { expect } from '@open-wc/testing';
+import { splitStringToArray } from './split-string-to-array.js';
+
+describe('splitStringToArray', () => {
+	it('splits and cleans a comma-separated string', () => {
+		const inputString = 'one, two, three, ,five';
+		const result = splitStringToArray(inputString);
+
+		expect(result).to.deep.equal(['one', 'two', 'three', 'five']);
+	});
+
+	it('handles custom delimiters', () => {
+		const inputString = 'apple | orange | banana';
+		const result = splitStringToArray(inputString, ' | ');
+
+		expect(result).to.deep.equal(['apple', 'orange', 'banana']);
+	});
+
+	it('handles strings with no non-empty elements', () => {
+		const inputString = ', , , , ';
+		const result = splitStringToArray(inputString);
+
+		expect(result).to.deep.equal([]);
+	});
+
+	it('trims whitespace from each element', () => {
+		const inputString = '   one  ,  two  ,  three   ';
+		const result = splitStringToArray(inputString);
+
+		expect(result).to.deep.equal(['one', 'two', 'three']);
+	});
+
+	it('returns an empty array for an empty string', () => {
+		const inputString = '';
+		const result = splitStringToArray(inputString);
+
+		expect(result).to.deep.equal([]);
+	});
+});