split environment tests into two classes

Signed-off-by: Adrian Edwards <adredwar@redhat.com>

Author: MoralCode

tests/test_classes/test_environment.py

@@ -6,8 +6,7 @@
 
 prefixes = ["COLLECTOSS", "OTHER"]
 
-class TestSystemEnv:
-
+class TestExtractPrefix:
     def test_env_extract_prefix(self):
         assert extract_prefix("OTHER_DB", prefixes) == "OTHER_"
         assert extract_prefix("COLLECTOSS_DB", prefixes) == "COLLECTOSS_"
@@ -20,6 +19,8 @@ def test_env_extract_prefix_default(self):
     def test_env_extract_prefix_unprefixed(self):
         assert extract_prefix("DB", prefixes) is None
 
+class TestSystemEnv:
+
     def test_fetching_env(self):
         # plain
         os.environ["COLLECTOSS_NAME"] = "A"