diff --git a/tests/_trial_temp.lock b/tests/_trial_temp.lock
new file mode 120000
index 0000000000000000000000000000000000000000..aa9f026430810c3b3fafa9a36aecbdeb64ca8e58
--- /dev/null
+++ b/tests/_trial_temp.lock
@@ -0,0 +1 @@
+13691
\ No newline at end of file
diff --git a/tests/test_python.py b/tests/test_python.py
index 80f0386002457cd936325e8762c1db246350e030..7bcd5ad36dac58067b72d9cac7dbde3563ad15d0 100644
--- a/tests/test_python.py
+++ b/tests/test_python.py
@@ -21,6 +21,24 @@ def is_same(dir1, dir2):
     Compare two directory trees content.
     Return False if they differ, True is they are the same.
     """
+    import glob
+    for f1 in glob.glob(dir1+"/**/*.*"):
+        rp = os.path.relpath(f1, dir1)
+        f2 = dir2 + "/"+rp
+
+        with open(f1, 'r') as f:
+            s1 = f.read()
+        with open(f2, 'r') as f:
+            s2 = f.read()
+
+        if s1 != s2:
+            print("*"*50)
+            print(f1)
+            print(s1)
+            print("-"*5)
+            print(s2)
+            return False
+
     compared = dircmp(dir1, dir2)
     if (compared.left_only or compared.right_only or compared.diff_files
         or compared.funny_files):