Add tests for new function in dpctl.utils

Adds a test for _is_gen9 helper utility useful for skipping
tests known to fail on Gen9.

Adds a test for intel_device_info function.
Test that descriptor names do not have typos.

Author: oleksandr-pavlyk

dpctl/tests/test_utils.py

@@ -21,6 +21,7 @@
 
 import dpctl
 import dpctl.utils
+from dpctl.enum_types import backend_type
 
 
 def test_get_execution_queue_input_validation():
@@ -122,3 +123,38 @@ def test_onetrace_enabled():
     with dpctl.utils.onetrace_enabled():
         assert os.getenv(v_name, None) == "1"
     assert os.getenv(v_name, None) == v_v
+
+
+def test__is_gen9():
+    try:
+        d = dpctl.select_default_device()
+    except dpctl.SyclDeviceCreationError:
+        pytest.skip("Default device could not be created")
+    u = dpctl.utils._is_gen9(d)
+    assert isinstance(u, bool)
+
+
+def test_intel_device_info():
+    try:
+        d = dpctl.select_default_device()
+    except dpctl.SyclDeviceCreationError:
+        pytest.skip("Default device could not be created")
+    descr = dpctl.utils.intel_device_info(d)
+    assert isinstance(descr, dict)
+    assert ("device_id" in descr) or (
+        not d.has_aspect_cpu and not d.backend == backend_type.level_zero
+    )
+    allowed_names = [
+        "device_id",
+        "gpu_slices",
+        "gpu_eu_count",
+        "gpu_eu_simd_width",
+        "gpu_hw_threads_per_eu",
+        "gpu_subslices_per_slice",
+        "gpu_eu_count_per_subslice",
+        "max_mem_bandwidth",
+    ]
+    for descriptor_name in descr.keys():
+        test = descriptor_name in allowed_names
+        err_msg = f"Key '{descriptor_name}' is not recognized"
+        assert test, err_msg