Replaces Stacktraces with useful error messages.

Changed the message shown when a user doesn't enter project/tenant
id/name to be more informative.

When attempting to stat a container without supplying project/tenant
name or id, an empty response was being returned instead of an error
being raised.

Changed the error raised in swiftclient.client when no tenant or project
is specified to be more specific.

Add tests for basic regression checking.

Closes-Bug: #1372589

Change-Id: I4eb6964d9f1702db119cc0294edc02841b1ecd5f

1 files changed, 69 insertions, 4 deletions

diff --git a/tests/unit/test_shell.py b/tests/unit/test_shell.py
index 8e61cb4..29d7472 100644
--- a/tests/unit/test_shell.py
+++ b/tests/unit/test_shell.py
@@ -24,6 +24,7 @@ import swiftclient
 from swiftclient.service import SwiftError
 import swiftclient.shell
 import swiftclient.utils
+from swiftclient.multithreading import OutputManager
 
 from os.path import basename, dirname
 from tests.unit.test_swiftclient import MockHttpTest
@@ -551,13 +552,13 @@ class TestParsing(unittest.TestCase):
         # check the expected opts are set
         for key, v in opts.items():
             actual = getattr(actual_opts, key)
-            self.assertEqual(v, actual, 'Expected %s for key %s, found %s'
-                                        % (v, key, actual))
+            self.assertEqual(v, actual, 'Expected %s for key %s, found %s' %
+                             (v, key, actual))
 
         for key, v in os_opts.items():
             actual = getattr(actual_opts, "os_" + key)
-            self.assertEqual(v, actual, 'Expected %s for key %s, found %s'
-                                        % (v, key, actual))
+            self.assertEqual(v, actual, 'Expected %s for key %s, found %s' %
+                             (v, key, actual))
 
         # check the os_options dict values are set
         self.assertTrue(hasattr(actual_opts, 'os_options'))
@@ -725,6 +726,55 @@ class TestParsing(unittest.TestCase):
         args = _make_args("stat", opts, os_opts)
         self.assertRaises(SystemExit, swiftclient.shell.main, args)
 
+    def test_no_tenant_name_or_id_v2(self):
+        os_opts = {"password": "secret",
+                   "username": "user",
+                   "auth_url": "http://example.com:5000/v3",
+                   "tenant_name": "",
+                   "tenant_id": ""}
+
+        out = six.StringIO()
+        err = six.StringIO()
+        mock_output = _make_output_manager(out, err)
+        with mock.patch('swiftclient.shell.OutputManager', mock_output):
+            args = _make_args("stat", {}, os_opts)
+            self.assertRaises(SystemExit, swiftclient.shell.main, args)
+        self.assertEqual(err.getvalue().strip(), 'No tenant specified')
+
+        out = six.StringIO()
+        err = six.StringIO()
+        mock_output = _make_output_manager(out, err)
+        with mock.patch('swiftclient.shell.OutputManager', mock_output):
+            args = _make_args("stat", {}, os_opts, cmd_args=["testcontainer"])
+            self.assertRaises(SystemExit, swiftclient.shell.main, args)
+        self.assertEqual(err.getvalue().strip(), 'No tenant specified')
+
+    def test_no_tenant_name_or_id_v3(self):
+        os_opts = {"password": "secret",
+                   "username": "user",
+                   "auth_url": "http://example.com:5000/v3",
+                   "tenant_name": "",
+                   "tenant_id": ""}
+
+        out = six.StringIO()
+        err = six.StringIO()
+        mock_output = _make_output_manager(out, err)
+        with mock.patch('swiftclient.shell.OutputManager', mock_output):
+            args = _make_args("stat", {"auth_version": "3"}, os_opts)
+            self.assertRaises(SystemExit, swiftclient.shell.main, args)
+        self.assertEqual(err.getvalue().strip(),
+                         'No project name or project id specified.')
+
+        out = six.StringIO()
+        err = six.StringIO()
+        mock_output = _make_output_manager(out, err)
+        with mock.patch('swiftclient.shell.OutputManager', mock_output):
+            args = _make_args("stat", {"auth_version": "3"},
+                              os_opts, cmd_args=["testcontainer"])
+            self.assertRaises(SystemExit, swiftclient.shell.main, args)
+        self.assertEqual(err.getvalue().strip(),
+                         'No project name or project id specified.')
+
     def test_insufficient_env_vars_v3(self):
         args = _make_args("stat", {}, {})
         opts = {"auth_version": "3"}
@@ -1043,3 +1093,18 @@ class TestKeystoneOptions(MockHttpTest):
 
         opts = {'auth-version': '2.0'}
         self._test_options(opts, os_opts)
+
+
+def _make_output_manager(stdout, stderr):
+    class MockOutputManager(OutputManager):
+        # This class is used to mock OutputManager so that we can
+        # override stdout and stderr. Mocking sys.stdout & sys.stdout
+        # doesn't work because they are argument defaults in the
+        # OutputManager constructor and those defaults are pinned to
+        # the value of sys.stdout/stderr before we get chance to mock them.
+        def __init__(self, print_stream=None, error_stream=None):
+            super(MockOutputManager, self).__init__()
+            self.print_stream = stdout
+            self.error_stream = stderr
+
+    return MockOutputManager