import { describe, test, expect } from 'bun:test';
import { PLCBundle } from '../src/plcbundle';

describe('Error Handling', () => {
  test('handles missing index file gracefully', async () => {
    const bundle = new PLCBundle('/nonexistent/path');
    
    try {
      await bundle.loadIndex();
      expect(true).toBe(false); // Should throw
    } catch (error) {
      expect(error).toBeDefined();
    }
  });

  test('handles invalid bundle numbers', async () => {
    const bundle = new PLCBundle('./test-data');
    
    // Test with negative number - padStart will create "0000-1"
    const path = bundle.getBundlePath(-1);
    expect(path).toContain('0000-1.jsonl.zst');
    
    // Test with zero
    const path0 = bundle.getBundlePath(0);
    expect(path0).toContain('000000.jsonl.zst');
    
    // Test with large number
    const pathLarge = bundle.getBundlePath(999999);
    expect(pathLarge).toContain('999999.jsonl.zst');
  });

  test('handles malformed operations', () => {
    const bundle = new PLCBundle();
    
    try {
      bundle.parseOperations('invalid json\n{bad');
      expect(true).toBe(false); // Should throw
    } catch (error) {
      expect(error).toBeDefined();
    }
  });
});