fix: test result shown as failed when a subtest fails

src/pykiso/test_result/text_result.py

@@ -31,6 +31,7 @@
 from shutil import get_terminal_size
 from typing import List, Optional, TextIO, Union
 from unittest import TextTestResult
+from unittest.case import _SubTest
 
 from ..test_coordinator.test_case import BasicTest
 from ..test_coordinator.test_suite import BaseTestSuite
@@ -241,6 +242,22 @@ def addError(self, test: Union[BasicTest, BaseTestSuite], err: ExcInfoType) -> N
         super().addError(test, err)
         self._error_occurred = True
 
+    def addSubTest(
+        self,
+        test: Union[BasicTest, BaseTestSuite],
+        subtest: _SubTest,
+        err: ExcInfoType,
+    ) -> None:
+        """Set the error flag when an error occurs in a subtest.
+
+        :param test: running testcase
+        :param subtest: subtest runned
+        :param err: tuple returned by sys.exc_info
+        """
+        super().addSubTest(test, subtest, err)
+        if err is not None:
+            self._error_occurred = True
+
     def printErrorList(self, flavour: str, errors: List[tuple]):
         """Print all errors at the end of the whole tests execution.
 

tests/test_text_result.py

@@ -13,7 +13,7 @@
 
 import pytest
 
-from pykiso.test_result.text_result import ResultStream
+from pykiso.test_result.text_result import BannerTestResult, ResultStream
 
 DUMMY_FILE = "dummy.txt"
 
@@ -94,3 +94,24 @@ def test_close(self, test_result_instance):
 
         assert test_result_instance.stderr is None
         assert test_result_instance.file is None
+
+
+class TestBannerTestResult:
+    @pytest.fixture()
+    def banner_test_result_instance(self):
+        return BannerTestResult(sys.stderr, True, 1)
+
+    @pytest.mark.parametrize(
+        "error,result_expected", [((Exception), True), (None, False)]
+    )
+    def test_addSubTest(
+        self, mocker, banner_test_result_instance, error, result_expected
+    ):
+        add_subTest_mock = mocker.patch("unittest.result.TestResult.addSubTest")
+        test_mock = mocker.patch("pykiso.test_coordinator.test_case.BasicTest")
+        subtest_mock = mocker.patch("unittest.case._SubTest")
+
+        banner_test_result_instance.addSubTest(test_mock, subtest_mock, error)
+
+        add_subTest_mock.assert_called_once_with(test_mock, subtest_mock, error)
+        assert banner_test_result_instance.error_occurred == result_expected