Fix end to end tests

Author: omar2535

graphqler/core.py

@@ -38,6 +38,9 @@ def compile_and_fuzz(path: str, url: str, input_config: dict | None = None) -> d
     compiler = Compiler(path, url)
     compiler.run()
 
+    stats = Stats()
+    stats.set_file_paths(path)
+
     fuzzer = Fuzzer(path, url)
     fuzzer.run()
 

graphqler/utils/singleton.py

@@ -11,4 +11,7 @@ def getInstance(*args, **kwargs):
     #   fresh_bucket = ObjectsBucket.__wrapped__(api)
     setattr(getInstance, "__wrapped__", myClass)
 
+    # Allow clearing the cached instance (useful for test isolation).
+    setattr(getInstance, "reset", lambda: instances.pop(myClass, None))
+
     return getInstance

tests/e2e/conftest.py

@@ -0,0 +1,27 @@
+import pytest
+
+
+@pytest.fixture(autouse=True, scope="function")
+def reset_singletons():
+    """Reset singleton instances before and after each test method.
+
+    When pytest-xdist uses fewer workers than test files, multiple test
+    modules run sequentially in the same worker process. Singletons
+    (Stats, ObjectsBucket, FEngine) would otherwise retain stale file
+    paths and state from a previous test, causing FileNotFoundErrors and
+    empty-bucket assertion failures.
+
+    Function scope is required because module-scoped fixtures are not
+    reliably triggered between unittest.TestCase test files.
+    """
+    from graphqler.utils.stats import Stats
+    from graphqler.utils.objects_bucket import ObjectsBucket
+    from graphqler.fuzzer.engine.fengine import FEngine
+
+    Stats.reset()  # ty: ignore[unresolved-attribute]
+    ObjectsBucket.reset()  # ty: ignore[unresolved-attribute]
+    FEngine.reset()  # ty: ignore[unresolved-attribute]
+    yield
+    Stats.reset()  # ty: ignore[unresolved-attribute]
+    ObjectsBucket.reset()  # ty: ignore[unresolved-attribute]
+    FEngine.reset()  # ty: ignore[unresolved-attribute]