diff --git a/test/functional/tests/cli/test_manual_casadm_flush.py b/test/functional/tests/cli/test_manual_casadm_flush.py
new file mode 100644
index 0000000..6898825
--- /dev/null
+++ b/test/functional/tests/cli/test_manual_casadm_flush.py
@@ -0,0 +1,84 @@
+#
+# Copyright(c) 2022 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import pytest
+import time
+
+from core.test_run_utils import TestRun
+from storage_devices.device import Device
+from test_utils.size import Size, Unit
+from core.test_run import TestRun
+from storage_devices.disk import DiskType, DiskTypeSet, DiskTypeLowerThan
+from test_tools.fio.fio import Fio
+from test_tools.fio.fio_param import ReadWrite, IoEngine
+from api.cas import casadm
+from api.cas.cache_config import CacheMode, CleaningPolicy
+from test_utils.os_utils import Udev
+
+
+@pytest.mark.CI
+@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.optane, DiskType.nand]))
+@pytest.mark.require_disk("core", DiskTypeLowerThan("cache"))
+def test_cleaning_policy():
+    """
+    Title: test manual casadm flush
+    description: | The test is to see if dirty data will be removed from the Cache
+    or Core after using the casadm command with the corresponding parameter.
+    pass_criteria:
+        - Cache and core are filled with dirty data.
+        - After cache and core flush dirty data are cleared.
+    """
+    with TestRun.step("Prepare devices."):
+        cache_disk = TestRun.disks["cache"]
+        cache_disk.create_partitions([Size(1, Unit.GibiByte)])
+        cache_dev = cache_disk.partitions[0]
+
+        core_disk = TestRun.disks["core"]
+        core_disk.create_partitions([Size(1, Unit.GibiByte)])
+        core_dev = core_disk.partitions[0]
+        cache_id = 1
+        Udev.disable()
+
+    with TestRun.step("Start cache and set cleaning policy to NOP"):
+        cache = casadm.start_cache(cache_dev, cache_mode=CacheMode.WB)
+        core = cache.add_core(core_dev)
+        cache.set_cleaning_policy(CleaningPolicy.nop)
+
+    with TestRun.step("Populate cache with dirty data."):
+        write_dirty_data(Size(1, Unit.MiB), core, cache_id)
+        if cache.get_dirty_blocks() <= Size.zero():
+            TestRun.fail("Failed to populate Cache with dirty data")
+        if core.get_dirty_blocks() <= Size.zero():
+            TestRun.fail("There is no dirty data on Core")
+
+    with TestRun.step("Perform casadm command and check whether dirty data is cleared from core"):
+        core.flush_core()
+        if core.get_dirty_blocks() > Size.zero():
+            TestRun.fail("Dirty data has not been cleaned from core")
+
+    with TestRun.step("Populate cache with dirty data again."):
+        write_dirty_data(Size(1, Unit.MiB), core, cache_id)
+        if core.get_dirty_blocks() <= Size.zero():
+            TestRun.fail("Cache has not been populated with dirty data.")
+
+    with TestRun.step("Perform casadm command to flush cache"):
+        cache.flush_cache()
+    with TestRun.step("Check if dirty data are cleared in stats"):
+        if cache.get_dirty_blocks() > Size.zero():
+            TestRun.fail("Cache contain dirty data.")
+
+
+def write_dirty_data(size: Size, core: Device, dev_id: int):
+    fio = (
+        Fio()
+        .create_command()
+        .size(size)
+        .read_write(ReadWrite.randwrite)
+        .io_engine(IoEngine.libaio)
+        .block_size(Size(1, Unit.Blocks4096))
+    )
+    fio.add_job(f"core{dev_id}").target(core.path)
+    fio.run()
+    time.sleep(1)