Add tests to dpctl._dev.verbose

Author: oleksandr-pavlyk

.flake8

@@ -13,6 +13,7 @@ exclude =
     .git
 
 per-file-ignores =
+    dpctl/_dev.pyx: E999
     dpctl/_sycl_context.pyx: E999, E225, E227
     dpctl/_sycl_device.pyx: E999, E225
     dpctl/_sycl_device_factory.pyx: E999, E225

dpctl/tests/test_service.py

@@ -107,3 +107,20 @@ def test___version__():
         r"0|[1-9][0-9]*))?(\+.*)?$"
     )
     assert re.match(reg_expr, dpctl_ver) is not None
+
+
+def test_dev_utils():
+    import dpctl._dev as dd
+
+    with dd.verbose():
+        dpctl.SyclDevice().parent_device
+    with dd.verbose(verbosity="error"):
+        dpctl.SyclDevice().parent_device
+    with pytest.raises(ValueError):
+        with dd.verbose(verbosity="blah"):
+            dpctl.SyclDevice().parent_device
+    with dd.verbose(log_dir="/tmp"):
+        dpctl.SyclDevice().parent_device
+    with pytest.raises(ValueError):
+        with dd.verbose(log_dir="/not_a_dir"):
+            dpctl.SyclDevice().parent_device