Module to manage pip packages

This new module provides methods to manage Python PIP packages from
a URL, from a local directory or from a build PIP package.

The implemented commands are:
- Install package.
- Remove package.
- List all installed packages in the system.

JIRA: YARDSTICK-910

Change-Id: I8f7d1b77c0c384b801cc6f5e67d8b45ce7c6bfdf
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>

1 files changed, 88 insertions, 0 deletions

diff --git a/yardstick/tests/unit/common/test_packages.py b/yardstick/tests/unit/common/test_packages.py
new file mode 100644
index 000000000..ba59a3015
--- /dev/null
+++ b/yardstick/tests/unit/common/test_packages.py
@@ -0,0 +1,88 @@
+# Copyright (c) 2018 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import mock
+from pip import exceptions as pip_exceptions
+from pip.operations import freeze
+import unittest
+
+from yardstick.common import packages
+
+
+class PipExecuteActionTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self._mock_pip_main = mock.patch.object(packages, '_pip_main')
+        self.mock_pip_main = self._mock_pip_main.start()
+        self.mock_pip_main.return_value = 0
+        self._mock_freeze = mock.patch.object(freeze, 'freeze')
+        self.mock_freeze = self._mock_freeze.start()
+        self.addCleanup(self._cleanup)
+
+    def _cleanup(self):
+        self._mock_pip_main.stop()
+        self._mock_freeze.stop()
+
+    def test_pip_execute_action(self):
+        self.assertEqual(0, packages._pip_execute_action('test_package'))
+
+    def test_remove(self):
+        self.assertEqual(0, packages._pip_execute_action('test_package',
+                                                         action='uninstall'))
+
+    def test_install(self):
+        self.assertEqual(0, packages._pip_execute_action(
+            'test_package', action='install', target='temp_dir'))
+
+    def test_pip_execute_action_error(self):
+        self.mock_pip_main.return_value = 1
+        self.assertEqual(1, packages._pip_execute_action('test_package'))
+
+    def test_pip_execute_action_exception(self):
+        self.mock_pip_main.side_effect = pip_exceptions.PipError
+        self.assertEqual(1, packages._pip_execute_action('test_package'))
+
+    def test_pip_list(self):
+        pkg_input = [
+            'XStatic-Rickshaw==1.5.0.0',
+            'xvfbwrapper==0.2.9',
+            '-e git+https://git.opnfv.org/yardstick@50773a24afc02c9652b662ecca'
+            '2fc5621ea6097a#egg=yardstick',
+            'zope.interface==4.4.3'
+        ]
+        pkg_dict = {
+            'XStatic-Rickshaw': '1.5.0.0',
+            'xvfbwrapper': '0.2.9',
+            'yardstick': '50773a24afc02c9652b662ecca2fc5621ea6097a',
+            'zope.interface': '4.4.3'
+        }
+        self.mock_freeze.return_value = pkg_input
+
+        pkg_output = packages.pip_list()
+        for pkg_name, pkg_version in pkg_output.items():
+            self.assertEqual(pkg_dict.get(pkg_name), pkg_version)
+
+    def test_pip_list_single_package(self):
+        pkg_input = [
+            'XStatic-Rickshaw==1.5.0.0',
+            'xvfbwrapper==0.2.9',
+            '-e git+https://git.opnfv.org/yardstick@50773a24afc02c9652b662ecca'
+            '2fc5621ea6097a#egg=yardstick',
+            'zope.interface==4.4.3'
+        ]
+        self.mock_freeze.return_value = pkg_input
+
+        pkg_output = packages.pip_list(pkg_name='xvfbwrapper')
+        self.assertEqual(1, len(pkg_output))
+        self.assertEqual(pkg_output.get('xvfbwrapper'), '0.2.9')