diff --git a/test/02_test/environment.json b/test/02_test/environment.json
new file mode 100644
index 00000000..a9b6ac2b
--- /dev/null
+++ b/test/02_test/environment.json
@@ -0,0 +1,4 @@
+{
+    "CIBW_TEST_REQUIRES": "nose",
+    "CIBW_TEST_COMMAND": "nosetests {project}/test"
+}
diff --git a/test/02_test/setup.py b/test/02_test/setup.py
new file mode 100644
index 00000000..866fa22c
--- /dev/null
+++ b/test/02_test/setup.py
@@ -0,0 +1,7 @@
+from setuptools import setup, Extension
+
+setup(
+    name="spam",
+    ext_modules=[Extension('spam', sources=['spam.c'])],
+    version="0.1.0",
+)
diff --git a/test/02_test/spam.c b/test/02_test/spam.c
new file mode 100644
index 00000000..d1ab0f22
--- /dev/null
+++ b/test/02_test/spam.c
@@ -0,0 +1,48 @@
+#include <Python.h>
+
+static PyObject *
+spam_system(PyObject *self, PyObject *args)
+{
+    const char *command;
+    int sts;
+
+    if (!PyArg_ParseTuple(args, "s", &command))
+        return NULL;
+    sts = system(command);
+    return PyLong_FromLong(sts);
+}
+
+/* Module initialization */
+
+#if PY_MAJOR_VERSION >= 3
+    #define MOD_INIT(name) PyMODINIT_FUNC PyInit_##name(void)
+    #define MOD_DEF(m, name, doc, methods, module_state_size) \
+        static struct PyModuleDef moduledef = { \
+            PyModuleDef_HEAD_INIT, name, doc, module_state_size, methods, }; \
+        m = PyModule_Create(&moduledef);
+    #define MOD_RETURN(m) return m;
+#else
+    #define MOD_INIT(name) PyMODINIT_FUNC init##name(void)
+    #define MOD_DEF(m, name, doc, methods, module_state_size) \
+        m = Py_InitModule3(name, methods, doc);
+    #define MOD_RETURN(m) return;
+#endif
+
+static PyMethodDef module_methods[] = {
+    {"system", (PyCFunction)spam_system, METH_VARARGS, 
+     "Execute a shell command."},
+    {NULL}  /* Sentinel */
+};
+
+MOD_INIT(spam)
+{
+    PyObject* m;
+
+    MOD_DEF(m, 
+            "spam", 
+            "Example module", 
+            module_methods,
+            -1)
+
+    MOD_RETURN(m)
+}
diff --git a/test/02_test/test/spam_test.py b/test/02_test/test/spam_test.py
new file mode 100644
index 00000000..a4c17e93
--- /dev/null
+++ b/test/02_test/test/spam_test.py
@@ -0,0 +1,8 @@
+from unittest import TestCase
+import spam
+
+
+class TestSpam(TestCase):
+    def test_system(self):
+        self.assertEqual(0, spam.system('python -c "exit(0)"'))
+        self.assertNotEqual(0, spam.system('python -c "exit(1)"'))