add test for bugfix of issue #68

Author: benvanwerkhoven

test/test_c_functions.py

@@ -71,6 +71,25 @@ def test_ready_argument_list4():
         cfunc = CFunctions()
         cfunc.ready_argument_list([arg1])
 
+def test_byte_array_arguments():
+    arg1 = numpy.array([1, 2, 3]).astype(numpy.int8)
+
+    cfunc = CFunctions()
+
+    output = cfunc.ready_argument_list([arg1])
+
+    output_arg1 = numpy.ctypeslib.as_array(output[0], shape=arg1.shape)
+
+    assert output_arg1.dtype == 'int8'
+
+    assert all(output_arg1 == arg1)
+
+    dest = numpy.zeros_like(arg1)
+
+    cfunc.memcpy_dtoh(dest, output[0])
+
+    assert all(dest == arg1)
+
 
 @patch('kernel_tuner.c.subprocess')
 @patch('kernel_tuner.c.numpy.ctypeslib')