Add tox env for Mac OS

Signed-off-by: Jaekwon Bang <[email protected]>

Author: bjk7119

tox.ini

@@ -55,7 +55,6 @@ commands =
 [testenv:run_windows]
 deps =
   -r{toxinidir}\requirements-dev.txt
-
 commands =
   # Test for PEP8
   pytest -v --flake8
@@ -69,3 +68,10 @@ commands =
   {toxinidir}\dist\cli.exe -p tests\test_gradle\jib -o tests\result\gradle -m gradle
   # Test for Pub
   {toxinidir}\dist\cli.exe -p tests\test_pub -o tests\result\pub
+
+[testenv:run_macos]
+deps =
+  -r{toxinidir}/requirements-dev.txt
+commands =
+  # Test for PEP8
+  pytest -v --flake8