diff --git a/repos/system_upgrade/common/actors/scansourcefiles/tests/unit_test_scansourcefiles.py b/repos/system_upgrade/common/actors/scansourcefiles/tests/unit_test_scansourcefiles.py
index 6a6b009a10..40ae240870 100644
--- a/repos/system_upgrade/common/actors/scansourcefiles/tests/unit_test_scansourcefiles.py
+++ b/repos/system_upgrade/common/actors/scansourcefiles/tests/unit_test_scansourcefiles.py
@@ -1,5 +1,142 @@
-def test_scansourcefiles():
-    # TODO(pstodulk): keeping unit tests for later after I check the idea
-    # of this actor with the team.
-    # JIRA: OAMG-10367
-    pass
+import os
+
+import pytest
+
+from leapp.libraries.actor import scansourcefiles
+from leapp.libraries.common import testutils
+from leapp.libraries.stdlib import api, CalledProcessError
+from leapp.models import FileInfo, TrackedFilesInfoSource
+
+
+@pytest.mark.parametrize(
+    ('run_output', 'expected_output_is_modified'),
+    (
+        ({'exit_code': 0}, False),
+        ({'exit_code': 1, 'stdout': 'missing     /boot/efi/EFI (Permission denied)'}, True),
+        ({'exit_code': 1, 'stdout': 'S.5......  c /etc/openldap/ldap.conf'}, True),
+        ({'exit_code': 1, 'stdout': '..?......  c /etc/libaudit.conf'}, False),
+        ({'exit_code': 1, 'stdout': '.....UG..  g /var/run/avahi-daemon'}, False),
+    )
+)
+def test_is_modified(monkeypatch, run_output, expected_output_is_modified):
+    input_file = '/file'
+
+    def mocked_run(cmd, *args, **kwargs):
+        assert cmd == ['rpm', '-Vf', '--nomtime', input_file]
+        return run_output
+
+    monkeypatch.setattr(scansourcefiles, 'run', mocked_run)
+    assert scansourcefiles.is_modified(input_file) == expected_output_is_modified
+
+
+@pytest.mark.parametrize(
+    'run_output',
+    [
+        {'stdout': ['']},
+        {'stdout': ['rpm']},
+        {'stdout': ['rpm1', 'rpm2']},
+    ]
+)
+def test_get_rpm_name(monkeypatch, run_output):
+    input_file = '/file'
+
+    def mocked_run(cmd, *args, **kwargs):
+        assert cmd == ['rpm', '-qf', '--queryformat', r'%{NAME}\n', input_file]
+        return run_output
+
+    monkeypatch.setattr(scansourcefiles, 'run', mocked_run)
+    monkeypatch.setattr(api, 'current_logger', testutils.logger_mocked())
+    assert scansourcefiles._get_rpm_name(input_file) == run_output['stdout'][0]
+
+    if len(run_output['stdout']) > 1:
+        expected_warnmsg = ('The {} file is owned by multiple rpms: {}.'
+                            .format(input_file, ', '.join(run_output['stdout'])))
+        assert api.current_logger.warnmsg == [expected_warnmsg]
+
+
+def test_get_rpm_name_error(monkeypatch):
+    input_file = '/file'
+
+    def mocked_run(cmd, *args, **kwargs):
+        assert cmd == ['rpm', '-qf', '--queryformat', r'%{NAME}\n', input_file]
+        raise CalledProcessError("mocked error", cmd, "result")
+
+    monkeypatch.setattr(scansourcefiles, 'run', mocked_run)
+    assert scansourcefiles._get_rpm_name(input_file) == ''
+
+
+@pytest.mark.parametrize(
+    ('input_file', 'exists', 'rpm_name', 'is_modified'),
+    (
+        ('/not_existing_file', False, '', False),
+        ('/not_existing_file_rpm_owned', False, 'rpm', False),
+        ('/not_existing_file_rpm_owned_modified', False, 'rpm', True),
+        ('/existing_file_not_modified', True, '', False),
+        ('/existing_file_owned_by_rpm_not_modified', True, 'rpm', False),
+        ('/existing_file_owned_by_rpm_modified', True, 'rpm', True),
+    )
+)
+def test_scan_file(monkeypatch, input_file, exists, rpm_name, is_modified):
+    monkeypatch.setattr(scansourcefiles, 'is_modified', lambda _: is_modified)
+    monkeypatch.setattr(scansourcefiles, '_get_rpm_name', lambda _: rpm_name)
+    monkeypatch.setattr(os.path, 'exists', lambda _: exists)
+
+    expected_model_output = FileInfo(path=input_file, exists=exists, rpm_name=rpm_name, is_modified=is_modified)
+    assert scansourcefiles.scan_file(input_file) == expected_model_output
+
+
+@pytest.mark.parametrize(
+    ('input_files'),
+    (
+        ([]),
+        (['/file1']),
+        (['/file1', '/file2']),
+    )
+)
+def test_scan_files(monkeypatch, input_files):
+    base_data = {
+        'exists': False,
+        'rpm_name': '',
+        'is_modified': False
+    }
+
+    def scan_file_mocked(input_file):
+        return FileInfo(path=input_file, **base_data)
+
+    monkeypatch.setattr(scansourcefiles, 'scan_file', scan_file_mocked)
+    expected_output_list = [FileInfo(path=input_file, **base_data) for input_file in input_files]
+    assert scansourcefiles.scan_files(input_files) == expected_output_list
+
+
+@pytest.mark.parametrize(
+    'rhel_major_version', ['8', '9']
+)
+def test_tracked_files(monkeypatch, rhel_major_version):
+    TRACKED_FILES_MOCKED = {
+        'common': [
+            '/file1',
+        ],
+        '8': [
+            '/file2',
+        ],
+        '9': [
+            '/file3',
+        ],
+    }
+
+    def scan_files_mocked(files):
+        return [FileInfo(path=file_path, exists=False, rpm_name='', is_modified=False) for file_path in files]
+
+    monkeypatch.setattr(api, 'produce', testutils.produce_mocked())
+    monkeypatch.setattr(scansourcefiles, 'TRACKED_FILES', TRACKED_FILES_MOCKED)
+    monkeypatch.setattr(scansourcefiles, 'get_source_major_version', lambda: rhel_major_version)
+    monkeypatch.setattr(scansourcefiles, 'scan_files', scan_files_mocked)
+
+    scansourcefiles.process()
+
+    tracked_files_model = api.produce.model_instances[0]
+    assert api.produce.called == 1
+    assert isinstance(tracked_files_model, TrackedFilesInfoSource)
+    # assert only 1 common and 1 version file were scanned
+    assert len(tracked_files_model.files) == 2
+    assert all(isinstance(files_list_item, FileInfo) for files_list_item in tracked_files_model.files)