adjust stateful spinner color to red once test fails

brownie/test/fixtures.py

@@ -91,7 +91,7 @@ def skip_coverage(self):
         # implemented in pytest_collection_modifyitems
         pass
 
-    @pytest.fixture(scope="session")
+    @pytest.fixture
     def state_machine(self):
         """Yields a rule-based state machine factory method."""
 

brownie/test/stateful.py

@@ -20,20 +20,39 @@
 
 
 class _BrownieStateMachine:
+
+    _failed = False
+
     def __init__(self) -> None:
         brownie.rpc.revert()
         sf.RuleBasedStateMachine.__init__(self)
 
+        # pytest capturemanager plugin, added when accessed via the state_manager fixture
         capman = getattr(self, "_capman", None)
         if capman:
             with capman.global_and_fixture_disabled():
-                sys.stdout.write(f"{color('yellow')}{marker[0]}\033[1D")
+                c = color("red" if self._failed else "yellow")
+                sys.stdout.write(f"{c}{marker[0]}\033[1D")
                 sys.stdout.flush()
             marker.rotate(1)
 
         if hasattr(self, "setup"):
             self.setup()  # type: ignore
 
+    def execute_step(self, step):
+        try:
+            super().execute_step(step)
+        except Exception:
+            type(self)._failed = True
+            raise
+
+    def check_invariants(self):
+        try:
+            super().check_invariants()
+        except Exception:
+            type(self)._failed = True
+            raise
+
 
 def _member_filter(member: tuple) -> bool:
     attr, fn = member