core tests

core/social/domain/errors/SocialDomainError.test.ts

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+import { describe, expect, it } from 'vitest';
+import { SocialDomainError } from './SocialDomainError';
+
+describe('SocialDomainError', () => {
+  it('creates an error with default kind (validation)', () => {
+    const error = new SocialDomainError('Invalid social data');
+
+    expect(error.name).toBe('SocialDomainError');
+    expect(error.type).toBe('domain');
+    expect(error.context).toBe('social');
+    expect(error.kind).toBe('validation');
+    expect(error.message).toBe('Invalid social data');
+  });
+
+  it('creates an error with custom kind', () => {
+    const error = new SocialDomainError('Social graph error', 'repository');
+
+    expect(error.name).toBe('SocialDomainError');
+    expect(error.type).toBe('domain');
+    expect(error.context).toBe('social');
+    expect(error.kind).toBe('repository');
+    expect(error.message).toBe('Social graph error');
+  });
+
+  it('creates an error with business kind', () => {
+    const error = new SocialDomainError('Friend limit exceeded', 'business');
+
+    expect(error.kind).toBe('business');
+    expect(error.message).toBe('Friend limit exceeded');
+  });
+
+  it('creates an error with infrastructure kind', () => {
+    const error = new SocialDomainError('Database connection failed', 'infrastructure');
+
+    expect(error.kind).toBe('infrastructure');
+    expect(error.message).toBe('Database connection failed');
+  });
+
+  it('creates an error with technical kind', () => {
+    const error = new SocialDomainError('Serialization error', 'technical');
+
+    expect(error.kind).toBe('technical');
+    expect(error.message).toBe('Serialization error');
+  });
+
+  it('creates an error with empty message', () => {
+    const error = new SocialDomainError('');
+
+    expect(error.message).toBe('');
+    expect(error.kind).toBe('validation');
+  });
+
+  it('creates an error with multiline message', () => {
+    const error = new SocialDomainError('Error\nwith\nmultiple\nlines');
+
+    expect(error.message).toBe('Error\nwith\nmultiple\nlines');
+  });
+
+  it('creates an error with special characters in message', () => {
+    const error = new SocialDomainError('Error with special chars: @#$%^&*()');
+
+    expect(error.message).toBe('Error with special chars: @#$%^&*()');
+  });
+
+  it('error is instance of Error', () => {
+    const error = new SocialDomainError('Test error');
+
+    expect(error).toBeInstanceOf(Error);
+    expect(error).toBeInstanceOf(SocialDomainError);
+  });
+
+  it('error has correct prototype chain', () => {
+    const error = new SocialDomainError('Test error');
+
+    expect(Object.getPrototypeOf(error)).toBe(SocialDomainError.prototype);
+    expect(Object.getPrototypeOf(Object.getPrototypeOf(error))).toBe(Error.prototype);
+  });
+});