PY2-PY3: Use bprint to cope with byte-strings in Python 3.

setup.py

@@ -30,6 +30,7 @@ def read(*rnames):
     ]
 
 tests_require = [
+    'grok',
     'zope.app.appsetup',
     'zope.app.publication',
     'zope.app.wsgi',

src/grokcore/view/ftests/directoryresource/dirresource.py

@@ -9,7 +9,7 @@
   >>> browser.open(
   ...     'http://localhost/@@/'
   ...     'grokcore.view.ftests.directoryresource.fixture.resource/file.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Foo resource file's content.
 
 Directoryresource registrations can be differentiated based on layers (and
@@ -18,7 +18,7 @@
   >>> browser.open(
   ...     'http://localhost/++skin++another/@@/'
   ...     'grokcore.view.ftests.directoryresource.fixture.resource/file.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Anotherfoo resource file's content.
 
 This resource is only available on the particular layer::
@@ -27,7 +27,7 @@
   ...     'http://localhost/++skin++another/@@/'
   ...     'grokcore.view.ftests.directoryresource.fixture.resource/'
   ...     'anotherfile.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Anotherfoo resource anotherfile's content.
 
   >>> browser.handleErrors = True
@@ -43,25 +43,25 @@
 
   >>> browser.handleErrors = False
   >>> browser.open('http://localhost/@@/fropple/file.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Bar resource file's content.
 
 Subdirectories are published as directoryresources recusively::
 
   >>> browser.open('http://localhost/@@/fropple/baz/file.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Baz resource file's content.
 
 A relative path to a directory with resources::
 
   >>> browser.open('http://localhost/@@/frepple/file.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Baz resource file's content.
 
 An absolute path to a directory with resources::
 
   >>> browser.open('http://localhost/@@/frupple/file.txt')
-  >>> print(browser.contents)
+  >>> bprint(browser.contents)
   Baz resource file's content.
 
 """

src/grokcore/view/ftests/test_functional.py

@@ -1,4 +1,5 @@
 import doctest
+import grok.testing
 import os.path
 import re
 import unittest
@@ -31,6 +32,7 @@ def suiteFromPackage(name):
     globs = dict(http=zope.app.wsgi.testlayer.http,
                  getRootFolder=getRootFolder,
                  wsgi_app=layer.make_wsgi_app,
+                 bprint=grok.testing.bprint,
                  )
     optionflags = (
         renormalizing.IGNORE_EXCEPTION_MODULE_IN_PYTHON2 +