Merge pull request #5798 from aklajnert/570-indirect-fixtures

Fix the scope behavior with indirect fixtures

src/_pytest/fixtures.py

@@ -859,7 +859,7 @@ class FixtureDef:
             if argname != "request":
                 fixturedef.addfinalizer(functools.partial(self.finish, request=request))
 
-        my_cache_key = request.param_index
+        my_cache_key = self.cache_key(request)
         cached_result = getattr(self, "cached_result", None)
         if cached_result is not None:
             result, cache_key, err = cached_result
@@ -877,6 +877,9 @@ class FixtureDef:
         hook = self._fixturemanager.session.gethookproxy(request.node.fspath)
         return hook.pytest_fixture_setup(fixturedef=self, request=request)
 
+    def cache_key(self, request):
+        return request.param_index if not hasattr(request, "param") else request.param
+
     def __repr__(self):
         return "<FixtureDef argname={!r} scope={!r} baseid={!r}>".format(
             self.argname, self.scope, self.baseid
@@ -913,7 +916,7 @@ def pytest_fixture_setup(fixturedef, request):
         kwargs[argname] = result
 
     fixturefunc = resolve_fixture_function(fixturedef, request)
-    my_cache_key = request.param_index
+    my_cache_key = fixturedef.cache_key(request)
     try:
         result = call_fixture_func(fixturefunc, request, kwargs)
     except TEST_OUTCOME: