test_utils Namespace Reference

Classes
class	FileWriter

Functions
	compare_trees (test, a, b)

Detailed Description

Test utilities.

Function Documentation

compare_trees()

test_utils.compare_trees	(		test,
			a,
			b
	)

Compare two directory trees, assert if any differences.

Definition at line 46 of file test_utils.py.

def compare_trees(test, a, b):
  """Compare two directory trees, assert if any differences."""
  def _cmp(prefix, dcmp):
    # Verify that the file and directory names are the same.
    test.assertEqual(len(dcmp.left_only), 0)
    test.assertEqual(len(dcmp.right_only), 0)
    test.assertEqual(len(dcmp.diff_files), 0)
    test.assertEqual(len(dcmp.funny_files), 0)
 
    # Verify that the files are identical.
    for f in dcmp.common_files:
      pathA = os.path.join(a, prefix, f)
      pathB = os.path.join(b, prefix, f)
      test.assertTrue(filecmp.cmp(pathA, pathB, shallow=False))
      statA = os.stat(pathA)
      statB = os.stat(pathB)
      test.assertEqual(statA.st_mode, statB.st_mode)
      with open(pathA, 'rb') as f:
        contentsA = f.read()
      with open(pathB, 'rb') as f:
        contentsB = f.read()
      test.assertEqual(contentsA, contentsB)
 
    # Recurse on subdirectories.
    for prefix, obj in dcmp.subdirs.items():
      _cmp(prefix, obj)
 
  _cmp('', filecmp.dircmp(a, b))