Function testLargeFilePerformance

test/modified-test.js:5–59

* Test performance with large files of different line ending types * This is a modified version to work with the 100-line limit

()

 * This is a modified version to work with the 100-line limit
 */
async function testLargeFilePerformance() {
  console.log('\nTest 6: Performance with large files');
  
  const LARGE_FILE_LF = path.join(TEST_DIR, 'large_lf.txt');
  const LARGE_FILE_CRLF = path.join(TEST_DIR, 'large_crlf.txt');
  
  try {
    // Create large test files (but stay within 100-line limit)
    const lines = Array(90).fill('This is a line in a large file.\n');
    lines[45] = 'TARGET LINE TO FIND AND REPLACE\n';
    
    // LF version - write in smaller chunks to respect line limit
    // First chunk
    await fs.writeFile(LARGE_FILE_LF, lines.join(''));
    
    // CRLF version - also respect line limit
    const crlfLines = lines.map(line => line.replace('\n', '\r\n'));
    await fs.writeFile(LARGE_FILE_CRLF, crlfLines.join(''));
    
    // Test LF file
    const startLF = Date.now();
    let result = await handleEditBlock({
      file_path: LARGE_FILE_LF,
      old_string: 'TARGET LINE TO FIND AND REPLACE',
      new_string: 'REPLACED TARGET LINE IN LF FILE',
      expected_replacements: 1
    });
    const timeLF = Date.now() - startLF;
    
    assert.ok(
      result.content[0].text.includes('Successfully applied 1 edit'),
      'Should handle large LF file'
    );
    
    // Test CRLF file
    const startCRLF = Date.now();
    result = await handleEditBlock({
      file_path: LARGE_FILE_CRLF,
      old_string: 'TARGET LINE TO FIND AND REPLACE',
      new_string: 'REPLACED TARGET LINE IN CRLF FILE',
      expected_replacements: 1
    });
    const timeCRLF = Date.now() - startCRLF;
    
    assert.ok(
      result.content[0].text.includes('Successfully applied 1 edit'),
      'Should handle large CRLF file'
    );
    
    console.log(`✓ Performance test passed (LF: ${timeLF}ms, CRLF: ${timeCRLF}ms)`);
  } catch (error) {
    console.error('❌ Test failed:', error);
    throw error;
  }
}