diff --git a/tests/autotests/cfpq_concrete_cases.py b/tests/autotests/cfpq_concrete_cases.py
new file mode 100644
index 000000000..7d86a0f4b
--- /dev/null
+++ b/tests/autotests/cfpq_concrete_cases.py
@@ -0,0 +1,106 @@
+from typing import Callable
+from pyformlang.cfg import CFG
+from copy import copy
+from pyformlang.rsa import RecursiveAutomaton
+from networkx import MultiDiGraph
+import graphs
+
+
+class CaseCFPQ:
+    """
+    class that contains all information about test case for cfpq algorithms
+    """
+
+    def __init__(
+        self,
+        graph: MultiDiGraph,
+        query: CFG,
+        actual_answer: set[tuple[int, int]],
+        start_nodes: set[int] = None,
+        final_nodes: set[int] = None,
+    ):
+        self.graph = copy(graph)
+        self.query = copy(query)
+        self.expected_answer = copy(actual_answer)
+        self.start_nodes = copy(start_nodes) if start_nodes else graph.nodes
+        self.final_nodes = copy(final_nodes) if final_nodes else graph.nodes
+
+    def check_answer_cfg(
+        self,
+        function: Callable[
+            [CFG, MultiDiGraph, set[int], set[int]],
+            set[tuple[int, int]],
+        ],
+    ):
+        """
+        assertion function for algorithms with cfg
+        :param function: the function under test (*hellings_based_cfpq* or *matrix_based_cfpq*)
+        :return: assertion
+        """
+        actual_res = function(
+            self.query, self.graph, self.start_nodes, self.final_nodes
+        )
+        assert actual_res == self.expected_answer
+
+    def check_answer_rsm(
+        self,
+        function: Callable[
+            [RecursiveAutomaton, MultiDiGraph, set[int], set[int]], set[tuple[int, int]]
+        ],
+        cfg_to_rsm: Callable[[CFG], RecursiveAutomaton],
+    ):
+        """
+        assertion function for algorithms with rsm
+        :param function: the function under test (*tensor_based_cfpq* or *gll_based_cfpq*)
+        :param cfg_to_rsm: function that convert CFG to RecursiveAutomaton
+        :return: assertion
+        """
+        actual_res = function(
+            cfg_to_rsm(self.query), self.graph, self.start_nodes, self.final_nodes
+        )
+        assert actual_res == self.expected_answer
+
+    def __str__(self):
+        return (
+            f"expected result: {self.expected_answer}\n"
+            + f"query: {self.query.to_text()}"
+            + f"graph: {self.graph.edges(data=True)}"
+        )
+
+
+CASES_CFPQ = [
+    CaseCFPQ(graphs.point_graph, CFG.from_text("S -> a"), set()),
+    CaseCFPQ(graphs.point_graph, CFG.from_text("S -> S a | $"), {(1, 1)}),
+    CaseCFPQ(
+        graphs.set_of_vertices_without_edges,
+        CFG.from_text("S -> S a | $"),
+        {(0, 0), (2, 2), (1, 1)},
+    ),
+    CaseCFPQ(graphs.b_graph, CFG.from_text("S -> a"), set()),
+    CaseCFPQ(graphs.b_graph, CFG.from_text("S -> b"), {(0, 1)}),
+    CaseCFPQ(graphs.b_graph, CFG.from_text("S -> S b | $"), {(0, 1), (0, 0), (1, 1)}),
+    CaseCFPQ(
+        graphs.bbb_graph,
+        CFG.from_text("S -> S b b | $"),
+        {(0, 1), (0, 0), (0, 2), (1, 1), (1, 2), (1, 0), (2, 2), (2, 1), (2, 0)},
+    ),
+    CaseCFPQ(
+        graphs.bab_graph,
+        CFG.from_text("S -> S a | S b | $"),
+        {(0, 1), (0, 0), (0, 2), (1, 1), (1, 2), (1, 0), (2, 2), (2, 1), (2, 0)},
+    ),
+    CaseCFPQ(
+        graphs.baa_graph, CFG.from_text("S -> a S b | $"), {(0, 0), (1, 1), (1, 0)}
+    ),
+    CaseCFPQ(graphs.baa_graph, CFG.from_text("S -> a S b | a b"), {(0, 0), (1, 0)}),
+    CaseCFPQ(
+        graphs.set_of_vertices_without_edges,
+        CFG.from_text("S -> $"),
+        {(0, 0), (2, 2), (1, 1)},
+    ),
+    CaseCFPQ(
+        graphs.aaa_graph,
+        CFG.from_text("S -> a | S S"),
+        {(0, 1), (0, 0), (0, 2), (1, 1), (1, 2), (1, 0), (2, 2), (2, 1), (2, 0)},
+    ),
+]
diff --git a/tests/autotests/graphs.py b/tests/autotests/graphs.py
new file mode 100644
index 000000000..9265d04cd
--- /dev/null
+++ b/tests/autotests/graphs.py
@@ -0,0 +1,31 @@
+from networkx import MultiDiGraph
+from constants import LABEL
+
+point_graph = MultiDiGraph()
+point_graph.add_node(1)
+
+set_of_vertices_without_edges = MultiDiGraph()
+set_of_vertices_without_edges.add_nodes_from([0, 1, 2])
+
+b_graph = MultiDiGraph()
+b_graph.add_edges_from([(0, 1, {LABEL: "b"})])
+
+bbb_graph = MultiDiGraph()
+bbb_graph.add_edges_from(
+    [(0, 1, {LABEL: "b"}), (1, 2, {LABEL: "b"}), (2, 0, {LABEL: "b"})]
+)
+
+bab_graph = MultiDiGraph()
+bab_graph.add_edges_from(
+    [(0, 1, {LABEL: "b"}), (1, 2, {LABEL: "a"}), (2, 0, {LABEL: "b"})]
+)
+
+baa_graph = MultiDiGraph()
+baa_graph.add_edges_from(
+    [(0, 0, {LABEL: "b"}), (0, 1, {LABEL: "a"}), (1, 0, {LABEL: "a"})]
+)
+
+aaa_graph = MultiDiGraph()
+aaa_graph.add_edges_from(
+    [(0, 1, {LABEL: "a"}), (1, 2, {LABEL: "a"}), (2, 0, {LABEL: "a"})]
+)
diff --git a/tests/autotests/rpq_concrete_cases.py b/tests/autotests/rpq_concrete_cases.py
new file mode 100644
index 000000000..2027891f6
--- /dev/null
+++ b/tests/autotests/rpq_concrete_cases.py
@@ -0,0 +1,84 @@
+from typing import Callable
+
+import graphs
+from copy import copy
+from helper import rpq_dict_to_set
+from networkx import MultiDiGraph
+
+
+class CaseRPQ:
+    """
+    class that contains all information about test case for rpq algorithms
+    """
+
+    def __init__(
+        self,
+        graph: MultiDiGraph,
+        regex: str,
+        actual_answer: set[tuple[int, int]],
+        start_nodes: set[int] = None,
+        final_nodes: set[int] = None,
+    ):
+        self.graph = copy(graph)
+        self.regex = copy(regex)
+        self.expected_answer = copy(actual_answer)
+        self.start_nodes = copy(start_nodes) if start_nodes else graph.nodes
+        self.final_nodes = copy(final_nodes) if final_nodes else graph.nodes
+
+    def check_answer_regex(
+        self,
+        function: Callable[
+            [MultiDiGraph, set[int], set[int], str], list[tuple[int, int]]
+        ],
+    ):
+        """
+        assertion function for algorithms with regex
+        :param function: the function under test (*tensor_based_rpq*)
+        :return: assertion
+        """
+        assert (
+            set(function(self.graph, self.start_nodes, self.final_nodes, self.regex))
+            == self.expected_answer
+        )
+
+    def check_answer_automata(
+        self,
+        function,
+        fa,
+        constraints_fa,
+    ):
+        """
+        assertion function for algorithms with automata
+        :param function: the function under test (*ms_bfs_based_rpq*)
+        :param fa: automata by graph
+        :param constraints_fa: automata by regex
+        :return: assertion
+        """
+        assert rpq_dict_to_set(function(fa, constraints_fa)) == self.expected_answer
+
+    def __str__(self):
+        return (
+            f"expected result: {self.expected_answer}\n"
+            + f"regex: {self.regex}"
+            + f"graph: {self.graph.edges(data=True)}"
+        )
+
+
+CASES_RPQ = [
+    CaseRPQ(graphs.point_graph, "a", set()),
+    CaseRPQ(graphs.point_graph, "a*", {(1, 1)}),
+    CaseRPQ(graphs.set_of_vertices_without_edges, "a*", {(0, 0), (2, 2), (1, 1)}),
+    CaseRPQ(graphs.b_graph, "a", set()),
+    CaseRPQ(graphs.b_graph, "b", {(0, 1)}),
+    CaseRPQ(graphs.b_graph, "b*", {(0, 1), (0, 0), (1, 1)}),
+    CaseRPQ(
+        graphs.bbb_graph,
+        "(b b)*",
+        {(0, 1), (0, 0), (0, 2), (1, 1), (1, 2), (1, 0), (2, 2), (2, 1), (2, 0)},
+    ),
+    CaseRPQ(
+        graphs.bab_graph,
+        "(a | b)*",
+        {(0, 1), (0, 0), (0, 2), (1, 1), (1, 2), (1, 0), (2, 2), (2, 1), (2, 0)},
+    ),
+]
diff --git a/tests/autotests/test_task03.py b/tests/autotests/test_task03.py
index e970e4d2a..321d73494 100644
--- a/tests/autotests/test_task03.py
+++ b/tests/autotests/test_task03.py
@@ -8,11 +8,12 @@
 import random
 import itertools
 from grammars_constants import REGEXES
+from rpq_concrete_cases import CASES_RPQ, CaseRPQ
 
 # Fix import statements in try block to run tests
 try:
     from project.task2 import regex_to_dfa
-    from project.task3 import intersect_automata, AdjacencyMatrixFA
+    from project.task3 import intersect_automata, AdjacencyMatrixFA, tensor_based_rpq
 except ImportError:
     pytestmark = pytest.mark.skip("Task 3 is not ready to test!")
 
@@ -46,10 +47,7 @@ def test(self, regex_str1: str, regex_str2: str) -> None:
         assert intersect_fa.accepts(word)
 
 
-def test_tensor_based_rpq_exists():
-    try:
-        import project.task3
-
-        assert "tensor_based_rpq" in dir(project.task3)
-    except NameError:
-        assert False
+class TestTensorBasedRPQ:
+    @pytest.mark.parametrize("case", CASES_RPQ)
+    def test_concrete_cases(self, case: CaseRPQ):
+        case.check_answer_regex(tensor_based_rpq)
diff --git a/tests/autotests/test_task04.py b/tests/autotests/test_task04.py
index 2b73fabde..645133461 100644
--- a/tests/autotests/test_task04.py
+++ b/tests/autotests/test_task04.py
@@ -7,6 +7,7 @@
 import pytest
 from grammars_constants import REGEXES
 from helper import generate_rnd_start_and_final, rpq_dict_to_set
+from rpq_concrete_cases import CASES_RPQ, CaseRPQ
 
 # Fix import statements in try block to run tests
 try:
@@ -23,6 +24,14 @@ def query(request) -> str:
 
 
 class TestRPQ:
+    @pytest.mark.parametrize("case", CASES_RPQ)
+    def test_concrete_cases(self, case: CaseRPQ):
+        fa = AdjacencyMatrixFA(
+            graph_to_nfa(case.graph, case.start_nodes, case.final_nodes)
+        )
+        constraint_fa = AdjacencyMatrixFA(regex_to_dfa(case.regex))
+        case.check_answer_automata(ms_bfs_based_rpq, fa, constraint_fa)
+
     def test(self, graph, query) -> None:
         start_nodes, final_nodes = generate_rnd_start_and_final(graph.copy())
         fa = AdjacencyMatrixFA(
diff --git a/tests/autotests/test_task06.py b/tests/autotests/test_task06.py
index 8558273de..01b5339f5 100644
--- a/tests/autotests/test_task06.py
+++ b/tests/autotests/test_task06.py
@@ -5,6 +5,7 @@
 import pytest
 from grammars_constants import REGEXP_CFG, GRAMMARS
 from rpq_template_test import rpq_cfpq_test, different_grammars_test
+from cfpq_concrete_cases import CaseCFPQ, CASES_CFPQ
 
 # Fix import statements in try block to run tests
 try:
@@ -14,6 +15,10 @@
 
 
 class TestHellingBasedCFPQ:
+    @pytest.mark.parametrize("case", CASES_CFPQ)
+    def test_concrete_cases(self, case: CaseCFPQ):
+        case.check_answer_cfg(hellings_based_cfpq)
+
     @pytest.mark.parametrize("regex_str, cfg_list", REGEXP_CFG)
     def test_rpq_cfpq_hellings(self, graph, regex_str, cfg_list):
         rpq_cfpq_test(graph, regex_str, cfg_list, hellings_based_cfpq)
diff --git a/tests/autotests/test_task07.py b/tests/autotests/test_task07.py
index 72aef324d..513ca5fe7 100644
--- a/tests/autotests/test_task07.py
+++ b/tests/autotests/test_task07.py
@@ -7,6 +7,7 @@
 from grammars_constants import REGEXP_CFG, GRAMMARS, GRAMMARS_DIFFERENT
 from helper import generate_rnd_start_and_final
 from rpq_template_test import rpq_cfpq_test, different_grammars_test
+from cfpq_concrete_cases import CASES_CFPQ, CaseCFPQ
 
 # Fix import statements in try block to run tests
 try:
@@ -17,6 +18,10 @@
 
 
 class TestMatrixBasedCFPQ:
+    @pytest.mark.parametrize("case", CASES_CFPQ)
+    def test_concrete_cases(self, case: CaseCFPQ):
+        case.check_answer_cfg(matrix_based_cfpq)
+
     @pytest.mark.parametrize("regex_str, cfg_list", REGEXP_CFG)
     def test_rpq_cfpq_matrix(self, graph, regex_str, cfg_list) -> None:
         rpq_cfpq_test(graph, regex_str, cfg_list, matrix_based_cfpq)
diff --git a/tests/autotests/test_task08.py b/tests/autotests/test_task08.py
index decfb479e..2ca5a31a1 100644
--- a/tests/autotests/test_task08.py
+++ b/tests/autotests/test_task08.py
@@ -11,6 +11,7 @@
     different_grammars_test,
     cfpq_algorithm_test,
 )
+from cfpq_concrete_cases import CASES_CFPQ, CaseCFPQ
 
 # Fix import statements in try block to run tests
 try:
@@ -22,6 +23,10 @@
 
 
 class TestTensorBasedCFPQ:
+    @pytest.mark.parametrize("case", CASES_CFPQ)
+    def test_concrete_cases(self, case: CaseCFPQ):
+        case.check_answer_rsm(tensor_based_cfpq, cfg_to_rsm)
+
     @pytest.mark.parametrize("regex_str, cfg_list", REGEXP_CFG)
     def test_rpq_cfpq_tensor(self, graph, regex_str, cfg_list) -> None:
         cfg_list_rsm = [cfg_to_rsm(grammar) for grammar in cfg_list]
diff --git a/tests/autotests/test_task09.py b/tests/autotests/test_task09.py
index 895574fef..6a5703c12 100644
--- a/tests/autotests/test_task09.py
+++ b/tests/autotests/test_task09.py
@@ -11,6 +11,7 @@
     different_grammars_test,
     cfpq_algorithm_test,
 )
+from cfpq_concrete_cases import CaseCFPQ, CASES_CFPQ
 
 # Fix import statements in try block to run tests
 try:
@@ -23,6 +24,10 @@
 
 
 class TestGLLBasedCFPQ:
+    @pytest.mark.parametrize("case", CASES_CFPQ)
+    def test_concrete_cases(self, case: CaseCFPQ):
+        case.check_answer_rsm(gll_based_cfpq, cfg_to_rsm)
+
     @pytest.mark.parametrize("regex_str, cfg_list", REGEXP_CFG)
     def test_rpq_cfpq_gll(self, graph, regex_str, cfg_list) -> None:
         rsm_list = [cfg_to_rsm(grammar) for grammar in cfg_list]