fix: add unit test for string_utils

Author: killerapp

linters/typescript/src/utils/string_utils.test.ts

@@ -0,0 +1,30 @@
+import { kebabToCamelCase } from './string_utils';
+
+describe('kebabToCamelCase', () => {
+  it('should convert kebab-case to camelCase', () => {
+    const cache = new Map<string, string>();
+    expect(kebabToCamelCase('hello-world', cache)).toBe('helloWorld');
+    expect(kebabToCamelCase('foo-bar-baz', cache)).toBe('fooBarBaz');
+    expect(kebabToCamelCase('single', cache)).toBe('single');
+  });
+
+  it('should use cache for repeated conversions', () => {
+    const cache = new Map<string, string>();
+    const result1 = kebabToCamelCase('test-string', cache);
+    const result2 = kebabToCamelCase('test-string', cache);
+    
+    expect(result1).toBe('testString');
+    expect(result2).toBe('testString');
+    expect(cache.get('test-string')).toBe('testString');
+  });
+
+  it('should handle empty string', () => {
+    const cache = new Map<string, string>();
+    expect(kebabToCamelCase('', cache)).toBe('');
+  });
+
+  it('should handle string with no hyphens', () => {
+    const cache = new Map<string, string>();
+    expect(kebabToCamelCase('alreadycamelcase', cache)).toBe('alreadycamelcase');
+  });
+});