add test for runner functions

tests/test_runner.py

@@ -0,0 +1,29 @@
+from pathlib import Path
+
+from pytest_abra import DirManager, Runner
+
+
+def test_runner_create_status_file(tmp_path: Path):
+    """check if _create_status_file prevents duplicates"""
+
+    DIR = DirManager(output_dir=tmp_path, session_id="temp")
+    DIR.create_all_dirs()
+    assert len(list(DIR.STATUS.iterdir())) == 0
+
+    # create first status file
+    Runner._create_status_file(DIR, "passed", "identifier-a")
+    assert len(list(DIR.STATUS.iterdir())) == 1
+
+    # create second status file
+    Runner._create_status_file(DIR, "passed", "identifier-b")
+    assert len(list(DIR.STATUS.iterdir())) == 2
+
+    # check if _get_status_files finds only the correct status file
+    result = Runner._get_status_files(DIR, "identifier-a")
+    assert len(result) == 1
+
+    # overwrite first status file
+    Runner._create_status_file(DIR, "failed", "identifier-a")
+    assert len(list(DIR.STATUS.iterdir())) == 2
+
+    assert Runner._is_test_passed(DIR, "identifier-a") is False