Merge pull request #84 from wbolster/exception-type-cleanups

Always raise TypeError for wrong argument types

Author: methane

msgpack/_unpacker.pyx

@@ -52,7 +52,7 @@ cdef inline init_ctx(unpack_context *ctx,
     ctx.user.object_hook = ctx.user.list_hook = <PyObject*>NULL
 
     if object_hook is not None and object_pairs_hook is not None:
-        raise ValueError("object_pairs_hook and object_hook are mutually exclusive.")
+        raise TypeError("object_pairs_hook and object_hook are mutually exclusive.")
 
     if object_hook is not None:
         if not PyCallable_Check(object_hook):
@@ -228,7 +228,7 @@ cdef class Unpacker(object):
         if file_like:
             self.file_like_read = file_like.read
             if not PyCallable_Check(self.file_like_read):
-                raise ValueError("`file_like.read` must be a callable.")
+                raise TypeError("`file_like.read` must be a callable.")
         if not max_buffer_size:
             max_buffer_size = INT_MAX
         if read_size > max_buffer_size:

msgpack/fallback.py

@@ -159,7 +159,7 @@ def __init__(self, file_like=None, read_size=0, use_list=True,
             self._fb_feeding = True
         else:
             if not callable(file_like.read):
-                raise ValueError("`file_like.read` must be callable")
+                raise TypeError("`file_like.read` must be callable")
             self.file_like = file_like
             self._fb_feeding = False
         self._fb_buffers = []
@@ -179,16 +179,16 @@ def __init__(self, file_like=None, read_size=0, use_list=True,
         self._ext_hook = ext_hook
 
         if list_hook is not None and not callable(list_hook):
-            raise ValueError('`list_hook` is not callable')
+            raise TypeError('`list_hook` is not callable')
         if object_hook is not None and not callable(object_hook):
-            raise ValueError('`object_hook` is not callable')
+            raise TypeError('`object_hook` is not callable')
         if object_pairs_hook is not None and not callable(object_pairs_hook):
-            raise ValueError('`object_pairs_hook` is not callable')
+            raise TypeError('`object_pairs_hook` is not callable')
         if object_hook is not None and object_pairs_hook is not None:
-            raise ValueError("object_pairs_hook and object_hook are mutually "
-                             "exclusive")
+            raise TypeError("object_pairs_hook and object_hook are mutually "
+                            "exclusive")
         if not callable(ext_hook):
-            raise ValueError("`ext_hook` is not callable")
+            raise TypeError("`ext_hook` is not callable")
 
     def feed(self, next_bytes):
         if isinstance(next_bytes, array.array):

test/test_obj.py

@@ -31,7 +31,7 @@ def test_decode_pairs_hook():
     assert unpacked[1] == prod_sum
 
 def test_only_one_obj_hook():
-    with raises(ValueError):
+    with raises(TypeError):
         unpackb(b'', object_hook=lambda x: x, object_pairs_hook=lambda x: x)
 
 def test_bad_hook():