SSSDConfigAPI fixes

* splitlist is a function
* shared SSSDConfigObject to reduce code duplication
* added missing exception class
* fixed some typos
* remove extra 'pass' in unittests
* use assertRaises in unittests

2 files changed, 133 insertions, 399 deletions

diff --git a/server/config/SSSDConfig.py b/server/config/SSSDConfig.py
index daf04c73..2de9e7a9 100644
--- a/server/config/SSSDConfig.py
+++ b/server/config/SSSDConfig.py
@@ -22,6 +22,7 @@ class ServiceNotRecognizedError(SSSDConfigException): pass
 class ServiceAlreadyExists(SSSDConfigException): pass
 class NoDomainError(SSSDConfigException): pass
 class DomainNotRecognized(SSSDConfigException): pass
+class DomainAlreadyExistsError(SSSDConfigException): pass
 class NoSuchProviderError(SSSDConfigException): pass
 class NoSuchProviderSubtypeError(SSSDConfigException): pass
 class ProviderSubtypeInUse(SSSDConfigException): pass
@@ -144,6 +145,9 @@ option_strings = {
     'proxy_pam_target' : _('PAM stack to use')
 }
 
+def striplist(l):
+    return([x.strip() for x in l])
+
 class SSSDConfigSchema(SSSDChangeConf):
     def __init__(self, schemafile, schemaplugindir):
         SSSDChangeConf.__init__(self)
@@ -185,9 +189,6 @@ class SSSDConfigSchema(SSSDChangeConf):
             'true'  : True,
             }
 
-    def _striplist(self, l):
-        return([x.strip() for x in l])
-
     def get_options(self, section):
         if not self.has_section(section):
             raise NoSectionError
@@ -202,7 +203,7 @@ class SSSDConfigSchema(SSSDChangeConf):
         parsed_options = {}
         for option in self.strip_comments_empty(options):
             unparsed_option = option['value']
-            split_option = self._striplist(unparsed_option.split(','))
+            split_option = striplist(unparsed_option.split(','))
             optionlen = len(split_option)
 
             primarytype = self.type_lookup[split_option[PRIMARY_TYPE]]
@@ -316,7 +317,67 @@ class SSSDConfigSchema(SSSDChangeConf):
             providers[key] = tuple(providers[key])
         return providers
 
-class SSSDService:
+class SSSDConfigObject(object):
+    def __init__(self):
+        self.name = None
+        self.options = {}
+
+    def get_name(self):
+        """
+        Return the name of the this object
+
+        === Returns ===
+        The domain name
+
+        === Errors ===
+        No errors
+        """
+        return self.name
+
+    def get_option(self, optionname):
+        """
+        Return the value of an service option
+
+        optionname:
+          The option to get.
+
+        === Returns ===
+        The value for the requested option.
+
+        === Errors ===
+        NoOptionError:
+          The specified option was not listed in the service
+        """
+        if optionname in self.options.keys():
+            return self.options[optionname]
+        raise NoOptionError(optionname)
+
+    def get_all_options(self):
+        """
+        Return a dictionary of name/value pairs for this object
+
+        === Returns ===
+        A dictionary of name/value pairs currently in use for this object
+
+        === Errors ===
+        No errors
+        """
+        return self.options
+
+    def remove_option(self, optionname):
+        """
+        Remove an option from the object. If the option does not exist, it is ignored.
+
+        === Returns ===
+        No return value.
+
+        === Errors ===
+        No errors
+        """
+        if self.options.has_key(optionname):
+            del self.options[optionname]
+
+class SSSDService(SSSDConfigObject):
     '''
     Object to manipulate SSSD service options
     '''
@@ -341,6 +402,8 @@ class SSSDService:
         ServiceNotRecognizedError:
           The service was not listed in the schema
         """
+        SSSDConfigObject.__init__(self)
+
         if not isinstance(apischema, SSSDConfigSchema) or type(servicename) != str:
             raise TypeError
 
@@ -367,18 +430,6 @@ class SSSDService:
             self.options['config_file_version'] = 2
             self.hidden_options.append('config_file_version')
 
-    def get_name(self):
-        """
-        Return the name of the service this object manages.
-
-        === Returns ===
-        The service name
-
-        === Errors ===
-        No errors
-        """
-        return self.name
-
     def list_options(self):
         """
         List all options that apply to this service
@@ -407,12 +458,6 @@ class SSSDService:
 
         return options
 
-    def _striplist(self, l):
-        """
-        Remove leading and trailing spaces from all entries in a list
-        """
-        return([x.strip() for x in l])
-
     def set_option(self, optionname, value):
         """
         Set a service option to the specified value (or values)
@@ -452,7 +497,7 @@ class SSSDService:
         # wrong subtype, it will fail below
         if option_schema[0] == list and type(value) != list:
             if type(value) == str:
-                value = self._striplist(value.split(','))
+                value = striplist(value.split(','))
             else:
                 value = [value]
 
@@ -475,50 +520,7 @@ class SSSDService:
 
         self.options[optionname] = value
 
-    def get_option(self, optionname):
-        """
-        Return the value of a service option
-
-        optionname:
-          The option to get.
-
-        === Returns ===
-        The value for the requested option.
-
-        === Errors ===
-        NoOptionError:
-          The specified option was not listed in the service
-        """
-        if optionname in self.options.keys():
-            return self.options[optionname]
-        raise NoOptionError(optionname)
-
-    def get_all_options(self):
-        """
-        Return a dictionary of name/value pairs for this service
-
-        === Returns ===
-        A dictionary of name/value pairs currently in use for this service
-
-        === Errors ===
-        No errors
-        """
-        return self.options
-
-    def remove_option(self, optionname):
-        """
-        Remove an option from the service. If the option does not exist, it is ignored.
-
-        === Returns ===
-        No return value.
-
-        === Errors ===
-        No errors
-        """
-        if self.options.has_key(optionname):
-            del self.options[optionname]
-
-class SSSDDomain:
+class SSSDDomain(SSSDConfigObject):
     """
     Object to manipulate SSSD domain options
     """
@@ -541,6 +543,8 @@ class SSSDDomain:
           apischema was not an SSSDConfigSchema object or domainname was not
          a string
         """
+        SSSDConfigObject.__init__(self)
+
         if not isinstance(apischema, SSSDConfigSchema) or type(domainname) != str:
             raise TypeError
 
@@ -557,18 +561,6 @@ class SSSDDomain:
         self.options.update(self.schema.get_defaults('provider'))
         self.options.update(self.schema.get_defaults('domain'))
 
-    def get_name(self):
-        """
-        Return the name of the domain this object manages.
-
-        === Returns ===
-        The domain name
-
-        === Errors ===
-        No errors
-        """
-        return self.name
-
     def set_active(self, active):
         """
         Enable or disable this domain
@@ -710,7 +702,7 @@ class SSSDDomain:
         # wrong subtype, it will fail below
         if option_schema[0] == list and type(value) != list:
             if type(value) == str:
-                value = self._striplist(value.split(','))
+                value = striplist(value.split(','))
             else:
                 value = [value]
 
@@ -740,52 +732,6 @@ class SSSDDomain:
         else:
             self.options[option] = value
 
-    def get_option(self, optionname):
-        """
-        Return the value of a domain option
-
-        === Returns ===
-        The value for the specified service option.
-
-        === Errors ===
-        NoOptionError:
-            The specified option was not listed in the service
-        """
-        if optionname in self.options.keys():
-            return self.options[optionname]
-        raise NoOptionError(optionname)
-
-    def get_all_options(self):
-        """
-        Return all configured domain options
-
-        === Returns ===
-        A dictionary of the domain options, keyed on the option name.
-
-        Example:
-        { 'debug_level': 0,
-          'min_id': 1000,
-          'cache_credentials': True
-        }
-
-        === Errors ===
-        No errors
-        """
-        return self.options
-
-    def remove_option(self, optionname):
-        """
-        Remove an option from the domain. If the option does not exist, it is ignored.
-
-        === Returns ===
-        No return value
-
-        === Errors ===
-        No errors
-        """
-        if optionname in self.options.keys():
-            del self.options[optionname]
-
     def add_provider(self, provider, provider_type):
         """
         Add a new provider type to the domain
@@ -818,7 +764,7 @@ class SSSDDomain:
         with_this_type = [x for x in self.providers if x[1] == provider_type]
         if len(with_this_type) > 1:
             # This should never happen!
-            raise ProviderSubtypeInUser
+            raise ProviderSubtypeInUse
         if len(with_this_type) == 1:
             if with_this_type[0][0] != provider:
                 raise ProviderSubtypeInUse(with_this_type[0][0])
@@ -1136,12 +1082,6 @@ class SSSDConfig(SSSDChangeConf):
 
         self.add_section(name, addkw, index)
 
-    def _striplist(self, l):
-        """
-        Remove leading and trailing spaces from all entries in a list
-        """
-        return([x.strip() for x in l])
-
     def list_active_domains(self):
         """
         Return a list of all active domains.
@@ -1158,7 +1098,7 @@ class SSSDConfig(SSSDChangeConf):
             raise NotInitializedError
 
         if (self.has_option('sssd', 'domains')):
-            active_domains = self._striplist(self.get('sssd', 'domains').split(','))
+            active_domains = striplist(self.get('sssd', 'domains').split(','))
         else:
             active_domains = []
 
@@ -1182,7 +1122,7 @@ class SSSDConfig(SSSDChangeConf):
             raise NotInitializedError
 
         if (self.has_option('sssd', 'domains')):
-            active_domains = self._striplist(self.get('sssd', 'domains').split(','))
+            active_domains = striplist(self.get('sssd', 'domains').split(','))
         else:
             active_domains = []
 
@@ -1268,7 +1208,7 @@ class SSSDConfig(SSSDChangeConf):
             raise DomainAlreadyExistsError
 
         domain = SSSDDomain(name, self.schema)
-        self.save_domain(domain);
+        self.save_domain(domain)
         return domain
 
     def delete_domain(self, name):
diff --git a/server/config/SSSDConfigTest.py b/server/config/SSSDConfigTest.py
index 954d24df..e5462334 100644
--- a/server/config/SSSDConfigTest.py
+++ b/server/config/SSSDConfigTest.py
@@ -74,7 +74,6 @@ class SSSDConfigTestValid(unittest.TestCase):
         self.assertEquals(new_options['full_name_format'][0], str)
 
         del sssdconfig
-        pass
 
     def testDomains(self):
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
@@ -96,7 +95,6 @@ class SSSDConfigTestValid(unittest.TestCase):
         self.assertTrue('auth_provider' in domain_opts.keys())
 
         del sssdconfig
-        pass
 
     def testListProviders(self):
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
@@ -155,7 +153,6 @@ class SSSDConfigTestSSSDService(unittest.TestCase):
     def setUp(self):
         self.schema = SSSDConfig.SSSDConfigSchema("etc/sssd.api.conf",
                                                   "etc/sssd.api.d")
-        pass
 
     def tearDown(self):
         pass
@@ -166,30 +163,15 @@ class SSSDConfigTestSSSDService(unittest.TestCase):
 
         # Type Error test
         # Name is not a string
-        try:
-            service = SSSDConfig.SSSDService(3, self.schema)
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError exception")
+        self.assertRaises(TypeError, SSSDConfig.SSSDService, 3, self.schema)
 
         # TypeError test
         # schema is not an SSSDSchema
-        try:
-            service = SSSDConfig.SSSDService('3', self)
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError exception")
+        self.assertRaises(TypeError, SSSDConfig.SSSDService, '3', self)
 
         # ServiceNotRecognizedError test
-        try:
-            service = SSSDConfig.SSSDService('ssd', self.schema)
-        except SSSDConfig.ServiceNotRecognizedError:
-            pass
-        else:
-            self.fail("Expected ServiceNotRecognizedError")
-
+        self.assertRaises(SSSDConfig.ServiceNotRecognizedError,
+                          SSSDConfig.SSSDService, 'ssd', self.schema)
 
     def testListOptions(self):
         service = SSSDConfig.SSSDService('sssd', self.schema)
@@ -270,20 +252,10 @@ class SSSDConfigTestSSSDService(unittest.TestCase):
         self.assertTrue('debug_level' not in service.options.keys())
 
         # Negative test - Nonexistent Option
-        try:
-            service.set_option('nosuchoption', 1)
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("Expected NoOptionError")
+        self.assertRaises(SSSDConfig.NoOptionError, service.set_option, 'nosuchoption', 1)
 
         # Negative test - Incorrect type
-        try:
-            service.set_option('debug_level', 'two')
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError")
+        self.assertRaises(TypeError, service.set_option, 'debug_level', 'two')
 
     def testGetOption(self):
         service = SSSDConfig.SSSDService('sssd', self.schema)
@@ -295,12 +267,7 @@ class SSSDConfigTestSSSDService(unittest.TestCase):
         self.assertEqual(service.get_option('services'), ['nss', 'pam'])
 
         # Negative Test - Bad Option
-        try:
-            service.get_option('nosuchoption')
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("Expected NoOptionError")
+        self.assertRaises(SSSDConfig.NoOptionError, service.get_option, 'nosuchoption')
 
     def testGetAllOptions(self):
         service = SSSDConfig.SSSDService('sssd', self.schema)
@@ -334,28 +301,16 @@ class SSSDConfigTestSSSDService(unittest.TestCase):
         # Positive test - Remove an option that exists
         self.assertEqual(service.get_option('debug_level'), 0)
         service.remove_option('debug_level')
-        try:
-            service.get_option('debug_level')
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("debug_level should have been removed")
+        self.assertRaises(SSSDConfig.NoOptionError, service.get_option, 'debug_level')
 
         # Positive test - Remove an option that doesn't exist
-        try:
-            service.get_option('nosuchentry')
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("nosuchentry should not exist")
-
+        self.assertRaises(SSSDConfig.NoOptionError, service.get_option, 'nosuchentry')
         service.remove_option('nosuchentry')
 
 class SSSDConfigTestSSSDDomain(unittest.TestCase):
     def setUp(self):
         self.schema = SSSDConfig.SSSDConfigSchema("etc/sssd.api.conf",
                                                   "etc/sssd.api.d")
-        pass
 
     def tearDown(self):
         pass
@@ -365,20 +320,10 @@ class SSSDConfigTestSSSDDomain(unittest.TestCase):
         domain = SSSDConfig.SSSDDomain('mydomain', self.schema)
 
         # Negative Test - Name not a string
-        try:
-            domain = SSSDConfig.SSSDDomain(2, self.schema)
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError")
+        self.assertRaises(TypeError, SSSDConfig.SSSDDomain, 2, self.schema)
 
         # Negative Test - Schema is not an SSSDSchema
-        try:
-            domain = SSSDConfig.SSSDDomain('mydomain', self)
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError")
+        self.assertRaises(TypeError, SSSDConfig.SSSDDomain, 'mydomain', self)
 
     def testGetName(self):
         # Positive Test
@@ -593,28 +538,16 @@ class SSSDConfigTestSSSDDomain(unittest.TestCase):
         domain.add_provider('local', 'id')
 
         # Negative Test - No such backend type
-        try:
-            domain.add_provider('nosuchbackend', 'auth')
-        except SSSDConfig.NoSuchProviderError:
-            pass
-        else:
-            self.fail("Expected NoSuchProviderError")
+        self.assertRaises(SSSDConfig.NoSuchProviderError,
+                          domain.add_provider, 'nosuchbackend', 'auth')
 
         # Negative Test - No such backend subtype
-        try:
-            domain.add_provider('ldap', 'nosuchsubtype')
-        except SSSDConfig.NoSuchProviderSubtypeError:
-            pass
-        else:
-            self.fail("Expected NoSuchProviderSubtypeError")
+        self.assertRaises(SSSDConfig.NoSuchProviderSubtypeError,
+                          domain.add_provider, 'ldap', 'nosuchsubtype')
 
         # Negative Test - Try to add a second provider of the same type
-        try:
-            domain.add_provider('ldap', 'id')
-        except SSSDConfig.ProviderSubtypeInUse:
-            pass
-        else:
-            self.fail("Expected ProviderSubtypeInUse")
+        self.assertRaises(SSSDConfig.ProviderSubtypeInUse,
+                          domain.add_provider, 'ldap', 'id')
 
     def testRemoveProvider(self):
         domain = SSSDConfig.SSSDDomain('sssd', self.schema)
@@ -755,24 +688,14 @@ class SSSDConfigTestSSSDDomain(unittest.TestCase):
         self.assertEqual(domain.get_option('debug_level'), 0)
 
         # Negative Test - Try to get valid option that is not set
-        try:
-            domain.get_option('max_id')
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("Expected NoOptionError")
+        self.assertRaises(SSSDConfig.NoOptionError, domain.get_option, 'max_id')
 
         # Positive Test - Set the above option and get it
         domain.set_option('max_id', 10000)
         self.assertEqual(domain.get_option('max_id'), 10000)
 
         # Negative Test - Try yo get invalid option
-        try:
-            domain.get_option('nosuchoption')
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("Expected NoOptionError")
+        self.assertRaises(SSSDConfig.NoOptionError, domain.get_option, 'nosuchoption')
 
     def testSetOption(self):
         domain = SSSDConfig.SSSDDomain('sssd', self.schema)
@@ -786,20 +709,10 @@ class SSSDConfigTestSSSDDomain(unittest.TestCase):
         self.assertTrue('max_id' not in domain.get_all_options().keys())
 
         # Negative Test - invalid option
-        try:
-            domain.set_option('nosuchoption', 1)
-        except SSSDConfig.NoOptionError:
-            pass
-        else:
-            self.fail("Expected NoOptionError")
+        self.assertRaises(SSSDConfig.NoOptionError, domain.set_option, 'nosuchoption', 1)
 
         # Negative Test - incorrect type
-        try:
-            domain.set_option('max_id', 'a string')
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError")
+        self.assertRaises(TypeError, domain.set_option, 'max_id', 'a string')
 
         # Positive Test - Coax options to appropriate type
         domain.set_option('max_id', '10000')
@@ -839,22 +752,12 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - No Such File
-        try:
-            sssdconfig = SSSDConfig.SSSDConfig("nosuchfile.api.conf",
-                                               "etc/sssd.api.d")
-        except IOError:
-            pass
-        else:
-            self.fail("Expected IOError")
+        self.assertRaises(IOError,
+                          SSSDConfig.SSSDConfig, "nosuchfile.api.conf", "etc/sssd.api.d")
 
         # Negative Test - Schema is not parsable
-        try:
-            sssdconfig = SSSDConfig.SSSDConfig("testconfigs/noparse.api.conf",
-                                               "etc/sssd.api.d")
-        except SSSDConfig.ParsingError:
-            pass
-        else:
-            self.fail("Expected ParsingError")
+        self.assertRaises(SSSDConfig.ParsingError,
+                          SSSDConfig.SSSDConfig, "testconfigs/noparse.api.conf", "etc/sssd.api.d")
 
     def testImportConfig(self):
         # Positive Test
@@ -902,55 +805,31 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
         #TODO: Check the types and values of the settings
 
         # Negative Test - Missing config file
-        try:
-            sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
-                                               "etc/sssd.api.d")
-            sssdconfig.import_config("nosuchfile.conf")
-        except IOError:
-            pass
-        else:
-            self.fail("Expected IOError")
+        sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
+                                           "etc/sssd.api.d")
+        self.assertRaises(IOError, sssdconfig.import_config, "nosuchfile.conf")
 
         # Negative Test - Invalid config file
-        try:
-            sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
-                                               "etc/sssd.api.d")
-            sssdconfig.import_config("testconfigs/sssd-invalid.conf")
-        except SSSDConfig.ParsingError:
-            pass
-        else:
-            self.fail("Expected ParsingError")
+        sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
+                                           "etc/sssd.api.d")
+        self.assertRaises(SSSDConfig.ParsingError, sssdconfig.import_config, "testconfigs/sssd-invalid.conf")
 
         # Negative Test - Invalid config file version
-        try:
-            sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
-                                               "etc/sssd.api.d")
-            sssdconfig.import_config("testconfigs/sssd-badversion.conf")
-        except SSSDConfig.ParsingError:
-            pass
-        else:
-            self.fail("Expected ParsingError")
+        sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
+                                           "etc/sssd.api.d")
+        self.assertRaises(SSSDConfig.ParsingError, sssdconfig.import_config, "testconfigs/sssd-badversion.conf")
 
         # Negative Test - No config file version
-        try:
-            sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
-                                               "etc/sssd.api.d")
-            sssdconfig.import_config("testconfigs/sssd-noversion.conf")
-        except SSSDConfig.ParsingError:
-            pass
-        else:
-            self.fail("Expected ParsingError")
+        sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
+                                           "etc/sssd.api.d")
+        self.assertRaises(SSSDConfig.ParsingError, sssdconfig.import_config, "testconfigs/sssd-noversion.conf")
 
         # Negative Test - Already initialized
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
                                            "etc/sssd.api.d")
         sssdconfig.import_config("testconfigs/sssd-valid.conf")
-        try:
-            sssdconfig.import_config("testconfigs/sssd-valid.conf")
-        except SSSDConfig.AlreadyInitializedError:
-            pass
-        else:
-            self.fail("Expected AlreadyInitializedError")
+        self.assertRaises(SSSDConfig.AlreadyInitializedError,
+                          sssdconfig.import_config, "testconfigs/sssd-valid.conf")
 
     def testNewConfig(self):
         # Positive Test
@@ -987,12 +866,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                             option)
 
         # Negative Test - Already Initialized
-        try:
-            sssdconfig.new_config()
-        except SSSDConfig.AlreadyInitializedError:
-            pass
-        else:
-            self.fail("Expected AlreadyInitializedError")
+        self.assertRaises(SSSDConfig.AlreadyInitializedError, sssdconfig.new_config)
 
     def testWrite(self):
         #TODO Write tests to compare output files
@@ -1003,12 +877,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - sssdconfig not initialized
-        try:
-            sssdconfig.list_services()
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.list_services)
 
         sssdconfig.new_config()
 
@@ -1031,12 +900,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - Not initialized
-        try:
-            service = sssdconfig.get_service('sssd')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.get_service, 'sssd')
 
         sssdconfig.new_config()
 
@@ -1046,24 +910,14 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
         # TODO verify the contents of this service
 
         # Negative Test - No such service
-        try:
-            service = sssdconfig.get_service('nosuchservice')
-        except SSSDConfig.NoServiceError:
-            pass
-        else:
-            self.fail("Expected NoServiceError")
+        self.assertRaises(SSSDConfig.NoServiceError, sssdconfig.get_service, 'nosuchservice')
 
     def testNewService(self):
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
                                            "etc/sssd.api.d")
 
         # Negative Test - Not initialized
-        try:
-            service = sssdconfig.new_service('sssd')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.new_service, 'sssd')
 
         sssdconfig.new_config()
 
@@ -1081,12 +935,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - Not initialized
-        try:
-            service = sssdconfig.delete_service('sssd')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.delete_service, 'sssd')
 
         sssdconfig.new_config()
 
@@ -1100,12 +949,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
         new_service = SSSDConfig.SSSDService('sssd', sssdconfig.schema)
 
         # Negative Test - Not initialized
-        try:
-            service = sssdconfig.save_service(new_service)
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.save_service, new_service)
 
         # Positive Test
         sssdconfig.new_config()
@@ -1114,24 +958,14 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
         # TODO: check that all entries were saved correctly (change a few)
 
         # Negative Test - Type Error
-        try:
-            sssdconfig.save_service(self)
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError")
+        self.assertRaises(TypeError, sssdconfig.save_service, self)
 
     def testListActiveDomains(self):
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
                                            "etc/sssd.api.d")
 
         # Negative Test - Not Initialized
-        try:
-            sssdconfig.list_active_domains()
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.list_active_domains)
 
         # Positive Test
         sssdconfig.import_config('testconfigs/sssd-valid.conf')
@@ -1155,12 +989,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - Not Initialized
-        try:
-            sssdconfig.list_inactive_domains()
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.list_inactive_domains)
 
         # Positive Test
         sssdconfig.import_config('testconfigs/sssd-valid.conf')
@@ -1184,12 +1013,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - Not Initialized
-        try:
-            sssdconfig.list_domains()
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.list_domains)
 
         # Positive Test
         sssdconfig.import_config('testconfigs/sssd-valid.conf')
@@ -1215,12 +1039,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - Not initialized
-        try:
-            domain = sssdconfig.get_domain('sssd')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.get_domain, 'sssd')
 
         sssdconfig.import_config('testconfigs/sssd-valid.conf')
 
@@ -1230,24 +1049,14 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
         # TODO verify the contents of this domain
 
         # Negative Test - No such domain
-        try:
-            domain = sssdconfig.get_domain('nosuchdomain')
-        except SSSDConfig.NoDomainError:
-            pass
-        else:
-            self.fail("Expected NoDomainError")
+        self.assertRaises(SSSDConfig.NoDomainError, sssdconfig.get_domain, 'nosuchdomain')
 
     def testNewDomain(self):
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
                                            "etc/sssd.api.d")
 
         # Negative Test - Not initialized
-        try:
-            domain = sssdconfig.new_domain('example.com')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.new_domain, 'example.com')
 
         sssdconfig.new_config()
 
@@ -1265,12 +1074,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                                            "etc/sssd.api.d")
 
         # Negative Test - Not initialized
-        try:
-            sssdconfig.delete_domain('IPA')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.delete_domain, 'IPA')
 
         # Positive Test
         sssdconfig.import_config('testconfigs/sssd-valid.conf')
@@ -1285,12 +1089,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
         sssdconfig = SSSDConfig.SSSDConfig("etc/sssd.api.conf",
                                            "etc/sssd.api.d")
         # Negative Test - Not initialized
-        try:
-            sssdconfig.delete_domain('IPA')
-        except SSSDConfig.NotInitializedError:
-            pass
-        else:
-            self.fail("Expected NotInitializedError")
+        self.assertRaises(SSSDConfig.NotInitializedError, sssdconfig.save_domain, 'IPA')
 
         # Positive Test
         sssdconfig.new_config()
@@ -1306,12 +1105,7 @@ class SSSDConfigTestSSSDConfig(unittest.TestCase):
                          'ldap://ldap.example.com')
 
         # Negative Test - Type Error
-        try:
-            sssdconfig.save_service(self)
-        except TypeError:
-            pass
-        else:
-            self.fail("Expected TypeError")
+        self.assertRaises(TypeError, sssdconfig.save_domain, self)
 
 if __name__ == "__main__":
     error = 0