Static tests: Move the dir list parsing to StaticServer

This way all of the directory lookups are done in a single place.

Signed-off-by: Jussi Kukkonen <[email protected]>

tuf_conformance/simulator_server.py

@@ -90,6 +90,15 @@ class StaticServer(ThreadingHTTPServer):
 
     data_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "static_data")
 
+    @classmethod
+    def static_test_names(cls) -> list[str]:
+        """Return list of static test names (subdirectories of 'static_data/')."""
+        static_tests = []
+        for static_dir in os.listdir(StaticServer.data_dir):
+            if os.path.isdir(os.path.join(StaticServer.data_dir, static_dir)):
+                static_tests.append(static_dir)
+        return static_tests
+
     def __init__(self) -> None:
         class _StaticReqHandler(BaseHTTPRequestHandler):
             def do_GET(self) -> None:  # noqa: N802

tuf_conformance/test_static_repositories.py

@@ -1,17 +1,10 @@
-import os
-
 import pytest
 
 from tuf_conformance.client_runner import ClientRunner
 from tuf_conformance.simulator_server import StaticServer
 
-static_repos = []
-for static_dir in os.listdir(StaticServer.data_dir):
-    if os.path.isdir(os.path.join(StaticServer.data_dir, static_dir)):
-        static_repos.append(static_dir)
-
 
-@pytest.mark.parametrize("static_repo", static_repos)
+@pytest.mark.parametrize("static_repo", StaticServer.static_test_names())
 def test_static_repository(
     static_client: ClientRunner, static_server: StaticServer, static_repo: str
 ) -> None: