local merge of #1967 - Change exception raised by capture.DontReadFromInput.fileno()

AUTHORS

@@ -131,5 +131,6 @@ Tom Viner
 Trevor Bekolay
 Tyler Goodlet
 Vasily Kuznetsov
+Vlad Dragos
 Wouter van Ackooy
 Xuecong Liao

CHANGELOG.rst

@@ -24,6 +24,8 @@ Changes
 * ``--pdbcls`` no longer implies ``--pdb``. This makes it possible to use 
   ``addopts=--pdbcls=module.SomeClass`` on ``pytest.ini``. Thanks `@davidszotten`_ for
   the PR (`#1952`_).
+* Change exception raised by ``capture.DontReadFromInput.fileno()`` from ``ValueError`` 
+  to ``io.UnsupportedOperation``. Thanks `@vlad-dragos`_ for the PR.
 
 
 .. _@davidszotten: https://github.com/davidszotten
@@ -92,6 +94,7 @@ Changes
 .. _@raquel-ucl: https://github.com/raquel-ucl
 .. _@axil: https://github.com/axil
 .. _@tgoodlet: https://github.com/tgoodlet
+.. _@vlad-dragos: https://github.com/vlad-dragos
 
 .. _#1853: https://github.com/pytest-dev/pytest/issues/1853
 .. _#1905: https://github.com/pytest-dev/pytest/issues/1905

_pytest/capture.py

@@ -7,6 +7,7 @@ from __future__ import with_statement
 import contextlib
 import sys
 import os
+from io import UnsupportedOperation
 from tempfile import TemporaryFile
 
 import py
@@ -447,7 +448,8 @@ class DontReadFromInput:
     __iter__ = read
 
     def fileno(self):
-        raise ValueError("redirected Stdin is pseudofile, has no fileno()")
+        raise UnsupportedOperation("redirected stdin is pseudofile, "
+                                   "has no fileno()")
 
     def isatty(self):
         return False