refactor

core/racing/domain/value-objects/CountryCode.test.ts

@@ -0,0 +1,47 @@
+import { describe, it, expect } from 'vitest';
+import { CountryCode } from './CountryCode';
+
+describe('CountryCode', () => {
+  it('should create a country code', () => {
+    const code = CountryCode.create('US');
+    expect(code.toString()).toBe('US');
+  });
+
+  it('should uppercase the code', () => {
+    const code = CountryCode.create('us');
+    expect(code.toString()).toBe('US');
+  });
+
+  it('should accept 3 letter code', () => {
+    const code = CountryCode.create('USA');
+    expect(code.toString()).toBe('USA');
+  });
+
+  it('should throw on empty code', () => {
+    expect(() => CountryCode.create('')).toThrow('Country code is required');
+  });
+
+  it('should throw on invalid length', () => {
+    expect(() => CountryCode.create('U')).toThrow('Country must be a valid ISO code (2-3 letters)');
+  });
+
+  it('should throw on 4 letters', () => {
+    expect(() => CountryCode.create('USAA')).toThrow('Country must be a valid ISO code (2-3 letters)');
+  });
+
+  it('should throw on non-letters', () => {
+    expect(() => CountryCode.create('U1')).toThrow('Country must be a valid ISO code (2-3 letters)');
+  });
+
+  it('should equal same code', () => {
+    const c1 = CountryCode.create('US');
+    const c2 = CountryCode.create('US');
+    expect(c1.equals(c2)).toBe(true);
+  });
+
+  it('should not equal different code', () => {
+    const c1 = CountryCode.create('US');
+    const c2 = CountryCode.create('CA');
+    expect(c1.equals(c2)).toBe(false);
+  });
+});