add macos target

tox.ini

@@ -8,7 +8,8 @@
 ; * withcov - run the tests wrapped using the coverage.
 ; * nocov - run the tests directly, without using the coverage wrapper.
 ; * wheel - build the wheel distribution
-; * posix - prepare the tests to be run in a Linux/Unix/OSX environment.
+; * posix - prepare the tests to be run in a Linux/Unix/macOS environment.
+; * macos - prepare the tests to be run in a macOS environment (superset of posix)
 ; * windows - prepare the tests to be executed under Windows.
 ;
 ; Some tags are defined only while transitioning to an updated Buildbot and
@@ -30,7 +31,7 @@
 skip_missing_interpreters=True
 toxworkdir=build/
 envlist=
-    {py27,py33,py34,py35}-{alldeps,nodeps}-{withcov,nocov}-{posix,windows}
+    {py27,py33,py34,py35}-{alldeps,nodeps}-{withcov,nocov}-{posix,macos,windows}
     {py27,py35}-wheel
     pyflakes,twistedchecker,apidocs,narrativedocs,topfile,manifest-checker
 
@@ -51,10 +52,12 @@ deps =
     {alldeps,tests,coverage}: priority
     {alldeps,tests,coverage}: sphinx
 
-    py27-{alldeps,tests,coverage}-posix: pysqlite
+    py27-{alldeps,tests,coverage}-{posix,macos}: pysqlite
     py27-{alldeps,tests,coverage}: soappy
 
-    alldeps-windows: pypiwin32
+    windows: pypiwin32
+    {alldeps,tests}-macos: pyobjc-core
+    {alldeps,tests}-macos: pyobjc-framework-cfnetwork
 
     {withcov,coverage}: coverage