Add generic python args test

tests/errors/w_unused.pyx

@@ -35,6 +35,9 @@ def unused_and_unassigned():
     cdef object foo
     cdef int i
 
+def unused_generic(*args, **kwargs):
+    pass
+
 _ERRORS = """
 6:6: Unused entry 'a'
 9:9: Unused entry 'b'
@@ -44,4 +47,6 @@ _ERRORS = """
 25:4: Unused entry 'Unused'
 35:16: Unused entry 'foo'
 36:13: Unused entry 'i'
+38:20: Unused argument 'args'
+38:28: Unused argument 'kwargs'
 """

tests/run/unused_args.pyx

+cdef c_unused_simple(a, b, c):
+    """
+    >>> c_unused_simple(1, 2, 3)
+    3
+    """
+    return a + b
+
+cdef c_unused_optional(a, b, c=1, d=2):
+    """
+    >>> c_unused_optional(1, 2)
+    4
+    >>> c_unused_optional(1, 2, 3, 4)
+    6
+    """
+    return b + d
+
+cpdef cp_unused_simple(a, b, c):
+    """
+    >>> cp_unused_simple(1, 2, 3)
+    3
+    """
+    return a + b
+
+cpdef cp_unused_optional(a, b, c=1, d=2):
+    """
+    >>> cp_unused_optional(1, 2)
+    4
+    >>> cp_unused_optional(1, 2, 3, 4)
+    6
+    """
+    return b + d
+
+
+cdef class Unused:
+    """
+    >>> o = Unused()
+    """
+
+    cpdef cp_unused_simple(self, a, b, c):
+        return c
+
+    cpdef cp_unused_optional(self, a, b, c=1, d=2):
+        return b + d
+
+def def_unused(a, b, c):
+    """
+    >>> def_unused(1, 2, 3)
+    """
+
+def def_unused_metho(o):
+    """
+    >>> def_unused_metho(0)
+    """