Add tox environment for pypy

Because some of our dependencies (notably psycopg2) are not supported
by pypy we have to add special tox evnironment explicitly.

Partial-bug: 1293585
Change-Id: I6e3fd38e05dc5a388894687b51234934cae6a6b7

tox-tmpl.ini

@@ -45,11 +45,9 @@ exclude = .venv,.tox,dist,doc,./taskflow/openstack/common,*egg,.git,build,tools
 # NOTE(imelnikov): pyXY envs are considered to be default, so they must have
 # richest set of test requirements
 [testenv:py26]
-basepython = python2.6
 deps = {[testenv:py26-sa7-mysql-ev]deps}
 
 [testenv:py27]
-basepython = python2.7
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/optional-requirements.txt
        -r{toxinidir}/test-requirements.txt
@@ -58,10 +56,18 @@ commands =
     sphinx-build -b doctest doc/source doc/build
 
 [testenv:py33]
-basepython = python3.3
 deps = {[testenv]deps}
        SQLAlchemy>=0.7.8,<=0.8.99
 
+# NOTE(imelnikov): psycopg2 is not supported on pypy
+[testenv:pypy]
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+       SQLAlchemy>=0.7.8,<=0.8.99
+       alembic>=0.4.1
+       kazoo>=1.3.1
+       kombu>=2.4.8
+
 [axes]
 python = py26,py27
 sqlalchemy = sa7,sa8,sa9

tox.ini

@@ -32,7 +32,8 @@ envlist = cover,
     py27-sa9-pymysql,
     py27-sa9-pymysql-ev,
     py33,
-    pylint
+    pylint,
+    pypy
 
 [testenv]
 usedevelop = True
@@ -71,11 +72,9 @@ builtins = _
 exclude = .venv,.tox,dist,doc,./taskflow/openstack/common,*egg,.git,build,tools
 
 [testenv:py26]
-basepython = python2.6
 deps = {[testenv:py26-sa7-mysql-ev]deps}
 
 [testenv:py27]
-basepython = python2.7
 deps = -r{toxinidir}/requirements.txt
     -r{toxinidir}/optional-requirements.txt
     -r{toxinidir}/test-requirements.txt
@@ -84,10 +83,17 @@ commands =
     sphinx-build -b doctest doc/source doc/build
 
 [testenv:py33]
-basepython = python3.3
 deps = {[testenv]deps}
     SQLAlchemy>=0.7.8,<=0.8.99
 
+[testenv:pypy]
+deps = -r{toxinidir}/requirements.txt
+    -r{toxinidir}/test-requirements.txt
+    SQLAlchemy>=0.7.8,<=0.8.99
+    alembic>=0.4.1
+    kazoo>=1.3.1
+    kombu>=2.4.8
+
 [testenv:py26-sa7-mysql-ev]
 deps = {[testenv]deps}
     SQLAlchemy<=0.7.99