[2835] Test the uniqueness of names is enforced

Which isn't at the moment, so it fails.

src/bin/cfgmgr/plugins/tests/datasrc_test.py

@@ -153,6 +153,82 @@ class DatasrcTest(unittest.TestCase):
             }
         }]})
 
+    def test_names_present(self):
+        """
+        Test we don't choke on configuration with the "name" being present on
+        some items.
+        """
+        self.accept({"IN": [{
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {},
+            "name": "Whatever"
+        }]})
+
+    def test_names_default_classes(self):
+        """
+        Test we can have a client of the same type in different classes
+        without specified name. The defaults should be derived both from
+        the type and the class.
+        """
+        self.accept({
+        "IN": [{
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {}
+        }],
+        "CH": [{
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {}
+        }]})
+
+    def test_names_collision(self):
+        """
+        Reject when two names are the same.
+
+        Cases are:
+        - Explicit names.
+        - Two default names turn out to be the same (same type and class).
+        - One explicit is set to the same as the default one.
+        """
+        self.reject({"IN": [
+        {
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {},
+            "name": "Whatever"
+        },
+        {
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {},
+            "name": "Whatever"
+        }]})
+        self.reject({"IN": [
+        {
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {}
+        },
+        {
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {}
+        }]})
+        self.reject({"IN": [
+        {
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {},
+            "name": "IN/MasterFiles"
+        },
+        {
+            "type": "MasterFiles",
+            "cache-enable": True,
+            "params": {}
+        }]})
+
 if __name__ == '__main__':
     isc.log.init("bind10")
     isc.log.resetUnitTestRootLogger()