Add unit tests for hipMemGetDefaultMemPool API

This change adds 2 new tests:
- Unit_hipMemGetDefaultMemPool_Negative
- Unit_hipMemGetDefaultMemPool_Basic

Signed-off-by: Sebastian Luzynski <sebastian.luzynski@amd.com>

Author: sluzynsk-amd

projects/hip-tests/catch/config/configs/unit/memory.yaml

@@ -1242,3 +1242,5 @@ memory:
   Unit_hipMemGetMemPool_Basic: *level_2
   Unit_hipMemSetMemPool_Negative: *level_2
   Unit_hipMemSetMemPool_Basic: *level_2
+  Unit_hipMemGetDefaultMemPool_Negative: *level_2
+  Unit_hipMemGetDefaultMemPool_Basic: *level_2

projects/hip-tests/catch/unit/memory/CMakeLists.txt

@@ -211,7 +211,8 @@ set(TEST_SRC
     hipFreeMipmappedArray.cc
     hipHostAlloc.cc
     hipMemSetMemPool.cc
-    hipMemGetMemPool.cc)
+    hipMemGetMemPool.cc
+    hipMemGetDefaultMemPool.cc)
 
 if(HIP_PLATFORM MATCHES "amd")
   set(TEST_SRC

projects/hip-tests/catch/unit/memory/hipMemGetDefaultMemPool.cc

@@ -0,0 +1,97 @@
+/*
+Copyright (c) 2026 Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of intge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <hip_test_common.hh>
+#include "mempool_common.hh"
+
+/**
+ * @addtogroup hipMemGetDefaultMemPool hipMemGetDefaultMemPool
+ * @{
+ * @ingroup MemoryTest
+ * `hipError_t hipMemGetDefaultMemPool(hipMemPool_t* memPool, hipMemLocation* location,
+                                       hipMemAllocationType type)` -
+ *  Gets the default memory pool for the location and allocation type.
+ */
+
+TEST_CASE("Unit_hipMemGetDefaultMemPool_Negative") {
+  int dev;
+  HIP_CHECK(hipGetDevice(&dev));
+
+  hipMemPool_t memPool;
+  hipMemLocation location{};
+  location.id = dev;
+  location.type = hipMemLocationTypeDevice;
+  hipMemAllocationType allocationType = hipMemAllocationTypePinned;
+
+  SECTION("Invalid memPool") {
+    HIP_CHECK_ERROR(hipMemGetDefaultMemPool(nullptr, &location, allocationType),
+                    hipErrorInvalidValue);
+  }
+
+  SECTION("Invalid location") {
+    HIP_CHECK_ERROR(hipMemGetDefaultMemPool(&memPool, nullptr, allocationType),
+                    hipErrorInvalidValue);
+
+    location.id = -1;
+    HIP_CHECK_ERROR(hipMemGetDefaultMemPool(&memPool, &location, allocationType),
+                    hipErrorInvalidValue);
+
+    location.id = dev;
+    location.type = hipMemLocationTypeNone;
+    HIP_CHECK_ERROR(hipMemGetDefaultMemPool(&memPool, &location, allocationType),
+                    hipErrorInvalidValue);
+  }
+
+  SECTION("Invalid allocation type") {
+    HIP_CHECK_ERROR(hipMemGetDefaultMemPool(&memPool, &location, hipMemAllocationTypeInvalid),
+                    hipErrorInvalidValue);
+  }
+}
+
+TEST_CASE("Unit_hipMemGetDefaultMemPool_Basic") {
+  int dev;
+  HIP_CHECK(hipGetDevice(&dev));
+
+  hipMemLocation location{};
+  location.id = dev;
+  location.type = hipMemLocationTypeDevice;
+
+  SECTION("Pinned") {
+    auto alloc_type = hipMemAllocationTypePinned;
+    hipMemPool_t memPool;
+    hipMemPool_t deviceMemPool;
+
+
+    HIP_CHECK(hipMemGetDefaultMemPool(&memPool, &location, alloc_type));
+    REQUIRE(memPool != nullptr);
+    HIP_CHECK(hipDeviceGetDefaultMemPool(&deviceMemPool, dev));
+    REQUIRE(deviceMemPool != nullptr);
+    REQUIRE(memPool == deviceMemPool);
+  }
+
+  SECTION("Managed") {
+    auto alloc_type = hipMemAllocationTypeManaged;
+    hipMemPool_t memPool;
+    HIP_CHECK(hipMemGetDefaultMemPool(&memPool, &location, alloc_type));
+    REQUIRE(memPool != nullptr);
+  }
+}