diff --git a/Lib/test/test_strop.py b/Lib/test/test_strop.py
new file mode 100644
index 0000000..5b2ddfb
--- /dev/null
+++ b/Lib/test/test_strop.py
@@ -0,0 +1,21 @@
+import strop, sys
+
+def test(name, input, output):
+    f = getattr(strop, name)
+    try:
+	value = f(input)
+    except:
+	 value = sys.exc_type
+	 print sys.exc_value
+    if value != output:
+	print f, `input`, `output`, `value`
+
+test('atoi', " 1 ", 1)
+test('atoi', " 1x", ValueError)
+test('atoi', " x1 ", ValueError)
+test('atol', "  1  ", 1L)
+test('atol', "  1x ", ValueError)
+test('atol', "  x1 ", ValueError)
+test('atof', "  1  ", 1.0)
+test('atof', "  1x ", ValueError)
+test('atof', "  x1 ", ValueError)