initial
diff --git a/simplejson/tests/test_speedups.py b/simplejson/tests/test_speedups.py
new file mode 100644
index 0000000..4bf0875
--- /dev/null
+++ b/simplejson/tests/test_speedups.py
@@ -0,0 +1,21 @@
+import decimal
+from unittest import TestCase
+
+from simplejson import decoder, encoder, scanner
+
+def has_speedups():
+    return encoder.c_make_encoder is not None
+
+class TestDecode(TestCase):
+    def test_make_scanner(self):
+        if not has_speedups():
+            return
+        self.assertRaises(AttributeError, scanner.c_make_scanner, 1)
+
+    def test_make_encoder(self):
+        if not has_speedups():
+            return
+        self.assertRaises(TypeError, encoder.c_make_encoder,
+            None,
+            "\xCD\x7D\x3D\x4E\x12\x4C\xF9\x79\xD7\x52\xBA\x82\xF2\x27\x4A\x7D\xA0\xCA\x75",
+            None)