diff --git a/tabbed/tests/__init__.py b/tabbed/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tabbed/tests/test_from_csv.py b/tabbed/tests/test_from_csv.py
new file mode 100644
index 0000000..fc07c43
--- /dev/null
+++ b/tabbed/tests/test_from_csv.py
@@ -0,0 +1 @@
+# example: md5(csv) == md5(Data(csv).export(to='json'))
\ No newline at end of file
diff --git a/tabbed/tests/test_from_json.py b/tabbed/tests/test_from_json.py
new file mode 100644
index 0000000..e69de29
diff --git a/tabbed/tests/test_from_xls.py b/tabbed/tests/test_from_xls.py
new file mode 100644
index 0000000..e69de29
diff --git a/tabbed/tests/test_from_xml.py b/tabbed/tests/test_from_xml.py
new file mode 100644
index 0000000..e69de29