diff --git a/src/testdir/pythonx/failing.py b/src/testdir/pythonx/failing.py
new file mode 100644
index 0000000..30e73a0
--- /dev/null
+++ b/src/testdir/pythonx/failing.py
@@ -0,0 +1 @@
+raise NotImplementedError
diff --git a/src/testdir/pythonx/failing_import.py b/src/testdir/pythonx/failing_import.py
new file mode 100644
index 0000000..511cae7
--- /dev/null
+++ b/src/testdir/pythonx/failing_import.py
@@ -0,0 +1 @@
+raise ImportError
diff --git a/src/testdir/pythonx/topmodule/__init__.py b/src/testdir/pythonx/topmodule/__init__.py
new file mode 100644
index 0000000..792d600
--- /dev/null
+++ b/src/testdir/pythonx/topmodule/__init__.py
@@ -0,0 +1 @@
+#
diff --git a/src/testdir/pythonx/topmodule/submodule/__init__.py b/src/testdir/pythonx/topmodule/submodule/__init__.py
new file mode 100644
index 0000000..792d600
--- /dev/null
+++ b/src/testdir/pythonx/topmodule/submodule/__init__.py
@@ -0,0 +1 @@
+#
diff --git a/src/testdir/pythonx/topmodule/submodule/subsubmodule/__init__.py b/src/testdir/pythonx/topmodule/submodule/subsubmodule/__init__.py
new file mode 100644
index 0000000..792d600
--- /dev/null
+++ b/src/testdir/pythonx/topmodule/submodule/subsubmodule/__init__.py
@@ -0,0 +1 @@
+#
diff --git a/src/testdir/pythonx/topmodule/submodule/subsubmodule/subsubsubmodule.py b/src/testdir/pythonx/topmodule/submodule/subsubmodule/subsubsubmodule.py
new file mode 100644
index 0000000..792d600
--- /dev/null
+++ b/src/testdir/pythonx/topmodule/submodule/subsubmodule/subsubsubmodule.py
@@ -0,0 +1 @@
+#