Add missing ULTs for driverHandleImp

Signed-off-by: Jaime Arteaga <jaime.a.arteaga.molina@intel.com>

Author: Jaime Arteaga

level_zero/core/source/driver/driver_handle_imp.cpp

@@ -235,7 +235,7 @@ ze_result_t DriverHandleImp::getDevice(uint32_t *pCount, ze_device_handle_t *phD
     }
 
     if (phDevices == nullptr) {
-        return ZE_RESULT_ERROR_INVALID_ARGUMENT;
+        return ZE_RESULT_ERROR_INVALID_NULL_HANDLE;
     }
 
     for (uint32_t i = 0; i < *pCount; i++) {

level_zero/core/test/unit_tests/sources/driver/test_driver.cpp

@@ -460,6 +460,19 @@ TEST_F(DriverHandleTest, givenInitializedDriverWhenGetDeviceIsCalledThenOneDevic
     EXPECT_NE(nullptr, &device);
 }
 
+TEST_F(DriverHandleTest, whenQueryingForApiVersionThenExpectedVersionIsReturned) {
+    ze_api_version_t version = {};
+    ze_result_t result = driverHandle->getApiVersion(&version);
+    EXPECT_EQ(ZE_RESULT_SUCCESS, result);
+    EXPECT_EQ(ZE_API_VERSION_1_1, version);
+}
+
+TEST_F(DriverHandleTest, whenQueryingForDevicesWithCountGreaterThanZeroAndNullDevicePointerThenNullHandleIsReturned) {
+    uint32_t count = 1;
+    ze_result_t result = driverHandle->getDevice(&count, nullptr);
+    EXPECT_EQ(ZE_RESULT_ERROR_INVALID_NULL_HANDLE, result);
+}
+
 TEST_F(DriverHandleTest, givenValidDriverHandleWhenGetSvmAllocManagerIsCalledThenSvmAllocsManagerIsObtained) {
     auto svmAllocsManager = driverHandle->getSvmAllocsManager();
     EXPECT_NE(nullptr, svmAllocsManager);