feat(linux): added fls() on Linux

components/linux/test_apps/linux_test/pytest_linux_test.py

@@ -0,0 +1,12 @@
+# SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: CC0-1.0
+import pytest
+from pytest_embedded_idf.dut import IdfDut
+
+
+@pytest.mark.linux
+@pytest.mark.host_test
+def test_linux_component(dut: IdfDut) -> None:
+    dut.expect_exact('Press ENTER to see the list of tests.')
+    dut.write('![ignore]')
+    dut.expect(r'\d{1} Tests 0 Failures 0 Ignored', timeout=10)