Remove ZERO_INITIALIZE flag from USM pool fixture, PoolCreate Success test

Instead this is now a separate case in USMPoolCreate

Also zero initialize pools in pool fixture

Author: aarongreig

test/conformance/testing/include/uur/fixtures.h

@@ -634,7 +634,7 @@ struct urUSMPoolTest : urContextTest {
     void SetUp() override {
         UUR_RETURN_ON_FATAL_FAILURE(urContextTest::SetUp());
         ur_usm_pool_desc_t pool_desc{UR_STRUCTURE_TYPE_USM_POOL_DESC, nullptr,
-                                     UR_USM_POOL_FLAG_ZERO_INITIALIZE_BLOCK};
+                                     0};
         ASSERT_SUCCESS(urUSMPoolCreate(this->context, &pool_desc, &pool));
     }
 
@@ -645,14 +645,14 @@ struct urUSMPoolTest : urContextTest {
         UUR_RETURN_ON_FATAL_FAILURE(urContextTest::TearDown());
     }
 
-    ur_usm_pool_handle_t pool;
+    ur_usm_pool_handle_t pool = nullptr;
 };
 
 template <class T> struct urUSMPoolTestWithParam : urContextTestWithParam<T> {
     void SetUp() override {
         UUR_RETURN_ON_FATAL_FAILURE(urContextTestWithParam<T>::SetUp());
         ur_usm_pool_desc_t pool_desc{UR_STRUCTURE_TYPE_USM_POOL_DESC, nullptr,
-                                     UR_USM_POOL_FLAG_ZERO_INITIALIZE_BLOCK};
+                                     0};
         ASSERT_SUCCESS(urUSMPoolCreate(this->context, &pool_desc, &pool));
     }
 
@@ -663,7 +663,7 @@ template <class T> struct urUSMPoolTestWithParam : urContextTestWithParam<T> {
         UUR_RETURN_ON_FATAL_FAILURE(urContextTestWithParam<T>::TearDown());
     }
 
-    ur_usm_pool_handle_t pool;
+    ur_usm_pool_handle_t pool = nullptr;
 };
 
 struct urVirtualMemGranularityTest : urContextTest {

test/conformance/usm/urUSMPoolCreate.cpp

@@ -9,6 +9,14 @@ using urUSMPoolCreateTest = uur::urContextTest;
 UUR_INSTANTIATE_DEVICE_TEST_SUITE_P(urUSMPoolCreateTest);
 
 TEST_P(urUSMPoolCreateTest, Success) {
+    ur_usm_pool_desc_t pool_desc{UR_STRUCTURE_TYPE_USM_POOL_DESC, nullptr, 0};
+    ur_usm_pool_handle_t pool = nullptr;
+    ASSERT_SUCCESS(urUSMPoolCreate(context, &pool_desc, &pool));
+    ASSERT_NE(pool, nullptr);
+    EXPECT_SUCCESS(urUSMPoolRelease(pool));
+}
+
+TEST_P(urUSMPoolCreateTest, SuccessWithFlag) {
     ur_usm_pool_desc_t pool_desc{UR_STRUCTURE_TYPE_USM_POOL_DESC, nullptr,
                                  UR_USM_POOL_FLAG_ZERO_INITIALIZE_BLOCK};
     ur_usm_pool_handle_t pool = nullptr;