Remove the vague variable name

Removes the vague variable name ``expected_result`` and adds to the
test within the loop (the same level as
``_assert_targets_files_exist``).

The test is done directly with the target path called the fetch
tracker from Repository Simulator, which is clean after that.

Signed-off-by: Kairo de Araujo <kdearaujo@vmware.com>

Author: Kairo de Araujo

tests/test_updater_consistent_snapshot.py

@@ -213,18 +213,24 @@ def test_download_targets(self, test_case_data: Dict[str, Any]):
         updater.config.prefix_targets_with_hash = prefix_targets_with_hash
         updater.refresh()
 
-        expected_result = []
         for targetpath in targetpaths:
             info = updater.get_targetinfo(targetpath)
             updater.download_target(info)
-            expected_prefix = None if not hash_algo else info.hashes[hash_algo]
-            expected_result.append((targetpath, expected_prefix))
+
             # target files are always persisted without hash prefix
             self._assert_targets_files_exist([info.path])
 
-
-        # files are fetched with the expected hash prefix (or None)
-        self.assertListEqual(sim.fetch_tracker.targets, expected_result)
+            # files are fetched with the expected hash prefix (or None)
+            self.assertListEqual(
+                sim.fetch_tracker.targets,
+                [
+                    (
+                        targetpath,
+                        None if not hash_algo else info.hashes[hash_algo],
+                    )
+                ],
+            )
+            sim.fetch_tracker.targets.clear()
 
         self._cleanup_dir(self.targets_dir)