- switched to using pytest-cleanslate for test isolation;

pyproject.toml

@@ -23,7 +23,7 @@ dependencies = [
     "aiolimiter",
     "tqdm",
     "slipcover>=1.0.13",
-    "pytest-forked",
+    "pytest-cleanslate",
     "litellm>=1.33.1"
 ]
 

src/coverup/testrunner.py

@@ -47,13 +47,13 @@ def measure_suite_coverage(*, tests_dir: Path, source_dir: Path, pytest_args='',
             command = [sys.executable,
                        '-m', 'slipcover', '--source', source_dir] + (['--branch'] if branch_coverage else []) + \
                             ['--json', '--out', j.name] + \
-                            (['--isolate-tests'] if isolate_tests else []) + \
-                      ['-m', 'pytest'] + pytest_args.split() + ['--disable-warnings', '-x', tests_dir]
+                      ['-m', 'pytest'] + pytest_args.split() + (['--cleanslate'] if isolate_tests else []) + \
+                            ['--disable-warnings', '-x', tests_dir]
 
             if trace: trace(command)
             p = subprocess.run(command, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
             if p.returncode not in (pytest.ExitCode.OK, pytest.ExitCode.NO_TESTS_COLLECTED):
-                if trace: trace(f"tests rc={p.returncode}")
+                if trace: trace(f"tests rc={p.returncode}\n" + str(p.stdout, 'utf-8'))
                 p.check_returncode()
 
             try: