Add init test with different runlevels and test for management device status

Signed-off-by: Katarzyna Lapinska <katarzyna.lapinska@intel.com>

test/functional/tests/initialize/test_initialize_status.py

@@ -0,0 +1,43 @@
+#
+# Copyright(c) 2020 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+#
+
+from api.cas import cas_module, casctl
+from api.cas.cas_module import CasModule
+from core.test_run import TestRun
+from test_utils import os_utils
+
+
+def test_init_status():
+    """
+        title: CAS management device status
+        description: |
+          Verify that CAS management device is present in OS only when CAS modules are loaded.
+        pass_criteria:
+          - CAS management device present in OS when CAS modules are loaded.
+          - CAS management device not present in OS when CAS modules are not loaded.
+    """
+    with TestRun.step("Check if CAS management device is present in OS."):
+        if cas_module.is_cas_management_dev_present():
+            TestRun.LOGGER.info("CAS management device is present in OS when CAS module is loaded.")
+        else:
+            TestRun.fail("CAS management device is not present in OS when CAS module is loaded.")
+
+    with TestRun.step("Remove CAS module."):
+        cas_module.unload_all_cas_modules()
+
+    with TestRun.step("Stop CAS service."):
+        casctl.stop()
+
+    with TestRun.step("Check if CAS management device is not present in OS."):
+        if not cas_module.is_cas_management_dev_present():
+            TestRun.LOGGER.info(
+                "CAS management device is not present in OS when CAS module is not loaded.")
+        else:
+            TestRun.fail("CAS management device is present in OS when CAS module is not loaded.")
+
+    with TestRun.step("Load CAS modules and start CAS service."):
+        os_utils.load_kernel_module(CasModule.cache.value)
+        os_utils.load_kernel_module(CasModule.disk.value)
+        casctl.start()