Port test_cornice to Python 3

* Use byte strings for HTTP body
* Remove debug print()
* tox.ini: add cornice-py3 test environment

Note: It looks like it doesn't work to inherit commands from cornice
into cornice-py3 because cornice commands use the substitution string
{posargs}.

Change-Id: Iaed39babc7ee9877d443c47c2f4b21b2e98b5181

tests/test_cornice.py

@@ -103,14 +103,14 @@ class WSMECorniceTestCase(unittest.TestCase):
         resp = self.app.get('/users')
         self.assertEqual(
             resp.body,
-            '[{"id": 1, "name": "first"}]'
+            b'[{"id": 1, "name": "first"}]'
         )
 
     def test_get_xml_list(self):
         resp = self.app.get('/users', headers={"Accept": "text/xml"})
         self.assertEqual(
             resp.body,
-            '<result><item><id>1</id><name>first</name></item></result>'
+           b'<result><item><id>1</id><name>first</name></item></result>'
         )
 
     def test_post_json_data(self):
@@ -121,7 +121,7 @@ class WSMECorniceTestCase(unittest.TestCase):
         )
         self.assertEqual(
             resp.body,
-            '{"id": 2, "name": "new"}'
+            b'{"id": 2, "name": "new"}'
         )
 
     def test_post_xml_data(self):
@@ -132,7 +132,7 @@ class WSMECorniceTestCase(unittest.TestCase):
         )
         self.assertEqual(
             resp.body,
-            '<result><id>2</id><name>new</name></result>'
+            b'<result><id>2</id><name>new</name></result>'
         )
 
     def test_pass_request(self):
@@ -170,7 +170,6 @@ class WSMECorniceTestCase(unittest.TestCase):
             headers={'Accept': 'application/json'},
             expect_errors=True
         )
-        print resp.body
         self.assertEqual(resp.json['faultcode'], 'Client')
         self.assertEqual(resp.status_code, 400)
 
@@ -180,6 +179,5 @@ class WSMECorniceTestCase(unittest.TestCase):
             headers={'Accept': 'application/json'},
             expect_errors=True
         )
-        print resp.body
         self.assertEqual(resp.json['faultcode'], 'Client')
         self.assertEqual(resp.status_code, 401)

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py27-nolxml,pypy,tg11,tg15,cornice,coverage,py34,py34-nolxml,pecan-dev27,pecan-dev34,pep8
+envlist = py27,py27-nolxml,pypy,tg11,tg15,cornice,cornice-py3,coverage,py34,py34-nolxml,pecan-dev27,pecan-dev34,pep8
 
 [common]
 testtools = 
@@ -32,6 +32,17 @@ commands =
 	{envbindir}/nosetests tests/test_cornice.py --with-xunit --xunit-file nosetests-{envname}.xml --verbose --with-coverage --cover-package wsmeext {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsmeext/cornice.py
 
+[testenv:cornice-py3]
+basepython = python3
+usedevelop = {[testenv:cornice]usedevelop}
+deps = {[testenv:cornice]deps}
+# disable hash randomization
+setenv =
+        PYTHONHASHSEED=0
+commands =
+	{envbindir}/nosetests tests/test_cornice.py --with-xunit --xunit-file nosetests-{envname}.xml --verbose --with-coverage --cover-package wsmeext {posargs}
+	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsmeext/cornice.py
+
 [testenv:pecan-dev-base]
 deps = 
 	{[common]testtools}