Add differ for unequal files

noaa-ocs-modeling · Jul 31, 2024 · 52f10f7 · 52f10f7
1 parent 826b683
commit 52f10f7
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/tests/__init__.py b/tests/__init__.py
@@ -1,4 +1,5 @@
 import os
+from difflib import context_diff
 from os import PathLike
 from pathlib import Path
 import re
@@ -76,6 +77,8 @@ def check_reference_directory(
                     del test_lines[line_index], reference_lines[line_index]
 
                 cwd = Path.cwd()
-                assert '\n'.join(test_lines) == '\n'.join(
-                    reference_lines
-                ), f'"{os.path.relpath(test_filename, cwd)}" != "{os.path.relpath(reference_filename, cwd)}"'
+                diff = context_diff(test_lines, reference_lines, lineterm='')
+                assert '\n'.join(test_lines) == '\n'.join(reference_lines), (
+                    f'"{os.path.relpath(test_filename, cwd)}" != "{os.path.relpath(reference_filename, cwd)}"\n\n'
+                    + '\n'.join(diff)
+                )