Adding a test for GalaxyCLI and two methods on which it depends. Tes… (#16651)

* Adding a test for GalaxyCLI and two methods on which it depends. Tests execute_info method.

*  Adding a test for GalaxyCLI and two methods on which it depends. Tests execute_remove method.

* Update test_galaxy.py

* Revising test for GalaxyCLI execute_remove.

* Removing mocks

test/units/cli/test_galaxy.py

@@ -23,6 +23,12 @@ from ansible.compat.six import PY3
 from ansible.compat.tests import unittest
 
 from nose.plugins.skip import SkipTest
+import ansible
+import os
+import shutil
+import tarfile
+
+from mock import patch
 
 if PY3:
     raise SkipTest('galaxy is not ported to be py3 compatible yet')
@@ -30,6 +36,56 @@ if PY3:
 from ansible.cli.galaxy import GalaxyCLI
 
 class TestGalaxy(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        '''creating prerequisites for installing a role; setUpClass occurs ONCE whereas setUp occurs with every method tested.'''
+        # class data for easy viewing: role_dir, role_tar, role_name, role_req, role_path
+        
+        if os.path.exists("./delete_me"):
+            shutil.rmtree("./delete_me")
+        
+        # creating framework for a role
+        gc = GalaxyCLI(args=["init"])
+        with patch('sys.argv', ["-c", "delete_me"]):
+            gc.parse()
+        gc.run()
+        cls.role_dir = "./delete_me"
+        cls.role_name = "delete_me"
+        cls.role_path = "/etc/ansible/roles"
+
+        # creating a tar file name for class data
+        cls.role_tar = './delete_me.tar.gz'
+        cls.makeTar(cls.role_tar, cls.role_dir)
+
+        # creating a temp file with installation requirements
+        cls.role_req = './delete_me_requirements.yml'
+        fd = open(cls.role_req, "w")
+        fd.write("- 'src': '%s'\n  'name': '%s'\n  'path': '%s'" % (cls.role_tar, cls.role_name, cls.role_path))
+        fd.close()
+
+    @classmethod
+    def makeTar(cls, output_file, source_dir):
+        ''' used for making a tarfile from a role directory '''
+        # adding directory into a tar file
+        try:
+            tar = tarfile.open(output_file, "w:gz")
+            tar.add(source_dir, arcname=os.path.basename(source_dir))
+        except AttributeError: # tarfile obj. has no attribute __exit__ prior to python 2.    7
+                pass
+        finally:  # ensuring closure of tarfile obj
+            tar.close()
+
+    @classmethod
+    def tearDownClass(cls):
+        '''After tests are finished removes things created in setUpClass'''
+        # deleting the temp role directory
+        if os.path.exists(cls.role_dir):
+            shutil.rmtree(cls.role_dir)
+        if os.path.exists(cls.role_req):
+            os.remove(cls.role_req)
+        if os.path.exists(cls.role_tar):
+            os.remove(cls.role_tar)
+
     def setUp(self):
         self.default_args = []
 
@@ -51,3 +107,26 @@ class TestGalaxy(unittest.TestCase):
         display_result = gc._display_role_info(role_info)
         if display_result.find('\t\tgalaxy_tags:') > -1:
             self.fail('Expected galaxy_tags to be indented twice')
+
+    def test_execute_remove(self):
+        # installing role
+        gc = GalaxyCLI(args=["install"])
+        with patch('sys.argv', ["--offline", "-r", self.role_req]):
+            galaxy_parser = gc.parse()
+        gc.run()
+        
+        # checking that installation worked
+        role_file = os.path.join(self.role_path, self.role_name)
+        self.assertTrue(os.path.exists(role_file))
+
+        # removing role
+        gc.args = ["remove"]
+        with patch('sys.argv', ["-c", self.role_name]):
+            galaxy_parser = gc.parse()
+        super(GalaxyCLI, gc).run()
+        gc.api = ansible.galaxy.api.GalaxyAPI(gc.galaxy)
+        completed_task = gc.execute_remove()
+
+        # testing role was removed
+        self.assertTrue(completed_task == 0)
+        self.assertTrue(not os.path.exists(role_file))