[pypy-commit] pypy default: check for no args in result_type

[bdkearns]

Author: Brian Kearns <bdkearns at gmail.com>
Branch: 
Changeset: r73866:83d8f679414d
Date: 2014-10-09 13:39 -0400
http://bitbucket.org/pypy/pypy/changeset/83d8f679414d/

Log:	check for no args in result_type

diff --git a/pypy/module/micronumpy/arrayops.py b/pypy/module/micronumpy/arrayops.py
--- a/pypy/module/micronumpy/arrayops.py
+++ b/pypy/module/micronumpy/arrayops.py
@@ -292,6 +292,8 @@
     args_w, kw_w = __args__.unpack()
     if kw_w:
         raise oefmt(space.w_TypeError, "result_type() takes no keyword arguments")
+    if not args_w:
+        raise oefmt(space.w_ValueError, "at least one array or dtype is required")
     result = None
     for w_arg in args_w:
         if isinstance(w_arg, W_NDimArray):
diff --git a/pypy/module/micronumpy/test/test_arrayops.py b/pypy/module/micronumpy/test/test_arrayops.py
--- a/pypy/module/micronumpy/test/test_arrayops.py
+++ b/pypy/module/micronumpy/test/test_arrayops.py
@@ -202,6 +202,8 @@
 
     def test_result_type(self):
         import numpy as np
+        exc = raises(ValueError, np.result_type)
+        assert str(exc.value) == "at least one array or dtype is required"
         exc = raises(TypeError, np.result_type, a=2)
         assert str(exc.value) == "result_type() takes no keyword arguments"
         assert np.result_type(True) is np.dtype('bool')