diff --git a/tests/autotests/grammars_constants.py b/tests/autotests/grammars_constants.py
index aee8e8b60..485b142ef 100644
--- a/tests/autotests/grammars_constants.py
+++ b/tests/autotests/grammars_constants.py
@@ -1,5 +1,6 @@
 from pyformlang.cfg import cfg
 from constants import *
+from random import sample
 
 GRAMMARS_TABLE: list[dict[str, list[str | cfg.CFG]]] = [
     {
@@ -326,7 +327,7 @@
 GRAMMARS_DIFFERENT: list[cfg.CFG] = [
     ds[CFG][0] for ds in GRAMMARS_TABLE if len(ds[CFG]) >= 1
 ]
-CFG_EBNF: list[tuple[list[cfg.CFG], list[str]]] = [
-    (ds[CFG], ds[EBNF]) for ds in GRAMMARS_TABLE
-]
-REGEXES = [regex_str for ds in GRAMMARS_TABLE for regex_str in ds[REGEXP]]
+CFG_EBNF: list[tuple[list[cfg.CFG], list[str]]] = sample(
+    [(ds[CFG], ds[EBNF]) for ds in GRAMMARS_TABLE], 15
+)
+REGEXES = sample([regex_str for ds in GRAMMARS_TABLE for regex_str in ds[REGEXP]], 15)
diff --git a/tests/autotests/rpq_template_test.py b/tests/autotests/rpq_template_test.py
index 9e8a96585..a5eef0c9e 100644
--- a/tests/autotests/rpq_template_test.py
+++ b/tests/autotests/rpq_template_test.py
@@ -16,8 +16,11 @@
 def rpq_cfpq_test(
     graph: MultiDiGraph,
     regex_str: str,
-    cfg_list: Iterable[CFG],
-    function: Callable[[CFG, MultiDiGraph, set[int], set[int]], set[tuple[int, int]]],
+    cfg_list: Iterable[CFG | RecursiveAutomaton],
+    function: Callable[
+        [CFG | RecursiveAutomaton, MultiDiGraph, set[int], set[int]],
+        set[tuple[int, int]],
+    ],
 ) -> None:
     start_nodes, final_nodes = generate_rnd_start_and_final(graph)
     for cf_gram in cfg_list:
@@ -35,8 +38,11 @@ def rpq_cfpq_test(
 
 def different_grammars_test(
     graph: MultiDiGraph,
-    eq_grammars: Iterable[CFG],
-    function: Callable[[CFG, MultiDiGraph, set[int], set[int]], set[tuple[int, int]]],
+    eq_grammars: Iterable[CFG | RecursiveAutomaton],
+    function: Callable[
+        [CFG | RecursiveAutomaton, MultiDiGraph, set[int], set[int]],
+        set[tuple[int, int]],
+    ],
 ) -> None:
     start_nodes, final_nodes = generate_rnd_start_and_final(graph)
     eq_cfpqs = [
diff --git a/tests/autotests/test_task8.py b/tests/autotests/test_task8.py
index 9cd44710c..170df8433 100644
--- a/tests/autotests/test_task8.py
+++ b/tests/autotests/test_task8.py
@@ -28,11 +28,13 @@
 class TestReachabilityTensorAlgorithm:
     @pytest.mark.parametrize("regex_str, cfg_list", REGEXP_CFG)
     def test_rpq_cfpq_tensor(self, graph, regex_str, cfg_list) -> None:
-        rpq_cfpq_test(graph, regex_str, cfg_list, cfpq_with_tensor)
+        cfg_list_rsm = [cfg_to_rsm(grammar) for grammar in cfg_list]
+        rpq_cfpq_test(graph, regex_str, cfg_list_rsm, cfpq_with_tensor)
 
     @pytest.mark.parametrize("eq_grammars", GRAMMARS)
     def test_different_grammars(self, graph, eq_grammars):
-        different_grammars_test(graph, eq_grammars, cfpq_with_tensor)
+        eq_grammars_rsm = [cfg_to_rsm(grammar) for grammar in eq_grammars]
+        different_grammars_test(graph, eq_grammars_rsm, cfpq_with_tensor)
 
     @pytest.mark.parametrize("cfg_list, ebnf_list", CFG_EBNF)
     def test_cfpq_tensor(self, graph, cfg_list, ebnf_list):
diff --git a/tests/autotests/test_task9.py b/tests/autotests/test_task9.py
index 3bdfac5c3..cfd5818ef 100644
--- a/tests/autotests/test_task9.py
+++ b/tests/autotests/test_task9.py
@@ -29,11 +29,13 @@
 class TestReachabilityGllAlgorithm:
     @pytest.mark.parametrize("regex_str, cfg_list", REGEXP_CFG)
     def test_rpq_cfpq_gll(self, graph, regex_str, cfg_list) -> None:
-        rpq_cfpq_test(graph, regex_str, cfg_list, cfpq_with_gll)
+        rsm_list = [cfg_to_rsm(grammar) for grammar in cfg_list]
+        rpq_cfpq_test(graph, regex_str, rsm_list, cfpq_with_gll)
 
     @pytest.mark.parametrize("eq_grammars", GRAMMARS)
     def test_different_grammars(self, graph, eq_grammars):
-        different_grammars_test(graph, eq_grammars, cfpq_with_gll)
+        eq_grammars_rsm = [cfg_to_rsm(grammar) for grammar in eq_grammars]
+        different_grammars_test(graph, eq_grammars_rsm, cfpq_with_gll)
 
     @pytest.mark.parametrize("cfg_list, ebnf_list", CFG_EBNF)
     def test_cfpq_gll(self, graph, cfg_list, ebnf_list):