Display proper missing argument name

Find and show argument name instead of showing argument of 'dest'
Add functional test for this
Remove test_cli_utils.py -> utils.py because this actually utils,
not tests.

Change-Id: Icc138ecf40b4929826efcad52c135c8809348d20
Closes-Bug: #1380562

tests/functional/test_cli_deployment.py

@@ -13,12 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-
 import json
 import unittest
 
 import mock
-import test_cli_utils as utils
+
+from tests.functional import utils
 
 
 class DeploymentTestCase(unittest.TestCase):

tests/functional/test_cli_task.py

@@ -13,12 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-
 import os
 import unittest
 
 import mock
-import test_cli_utils as utils
+
+from tests.functional import utils
 
 
 class TaskTestCase(unittest.TestCase):

tests/functional/utils.py

@@ -0,0 +1,100 @@
+# Copyright 2013: Mirantis Inc.
+# All Rights Reserved.
+#
+#    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 ConfigParser
+import json
+import os
+import pwd
+import shutil
+import subprocess
+import tempfile
+
+
+TEST_ENV = {
+    "OS_USERNAME": "admin",
+    "OS_PASSWORD": "admin",
+    "OS_TENANT_NAME": "admin",
+    "OS_AUTH_URL": "http://fake/",
+}
+
+
+class RallyCmdError(Exception):
+
+    def __init__(self, code, output):
+        self.code = code
+        self.output = output
+
+    def __str__(self):
+        return "Code: %d Output: %s\n" % (self.code, self.output)
+
+    def __unicode__(self):
+        return "Code: %d Output: %s\n" % (self.code, self.output)
+
+
+class TaskConfig(object):
+
+    def __init__(self, config):
+        config_file = tempfile.NamedTemporaryFile(delete=False)
+        config_file.write(json.dumps(config))
+        config_file.close()
+        self.filename = config_file.name
+
+    def __del__(self):
+        os.unlink(self.filename)
+
+
+class Rally(object):
+    """Create and represent separate rally installation.
+
+    Usage:
+
+        rally = Rally()
+        rally("deployment", "create", "--name", "Some Deployment Name")
+        output = rally("deployment list")
+
+    """
+
+    def __init__(self, fake=False):
+        # NOTE(sskripnick): we shoud change home dir to avoid races
+        # and do not touch any user files in ~/.rally
+        os.environ["HOME"] = pwd.getpwuid(os.getuid()).pw_dir
+        subprocess.call("rally deployment config > /tmp/.rd.json", shell=True)
+        self.tmp_dir = tempfile.mkdtemp()
+        os.environ["HOME"] = self.tmp_dir
+        config_filename = os.path.join(self.tmp_dir, "conf")
+        config = ConfigParser.RawConfigParser()
+        config.add_section("database")
+        config.set("database", "connection", "sqlite:///%s/db" % self.tmp_dir)
+        with open(config_filename, "wb") as conf:
+            config.write(conf)
+        self.args = ["rally", "--config-file", config_filename]
+        subprocess.call(["rally-manage", "--config-file", config_filename,
+                         "db", "recreate"])
+        self("deployment create --file /tmp/.rd.json --name MAIN")
+
+    def __del__(self):
+        shutil.rmtree(self.tmp_dir)
+
+    def __call__(self, cmd, getjson=False):
+        if not isinstance(cmd, list):
+            cmd = cmd.split(" ")
+        try:
+            output = subprocess.check_output(self.args + cmd,
+                                             stderr=subprocess.STDOUT)
+            if getjson:
+                return json.loads(output)
+            return output
+        except subprocess.CalledProcessError as e:
+            raise RallyCmdError(e.returncode, e.output)