test: Add backend_api_test to test backend APIs

Dockerfile.QA

@@ -144,6 +144,7 @@ RUN mkdir -p qa/common && \
     mkdir qa/L0_data_compression/models && \
     cp -r docs/examples/model_repository/simple qa/L0_data_compression/models && \
     cp bin/data_compressor_test qa/L0_data_compression/. && \
+    cp bin/backend_tensor_size_test qa/L0_input_validation/. && \
     cp bin/metrics_api_test qa/L0_metrics/. && \
     cp bin/response_cache_test qa/L0_response_cache/. && \
     cp bin/request_cancellation_test qa/L0_request_cancellation/. && \

qa/L0_input_validation/test.sh

@@ -48,8 +48,6 @@ CLIENT_LOG="./input_validation_client.log"
 TEST_PY=./input_validation_test.py
 TEST_RESULT_FILE='./test_results.txt'
 SERVER_LOG="./inference_server.log"
-TEST_LOG="./input_byte_size_test.log"
-TEST_EXEC=./input_byte_size_test
 
 export CUDA_VISIBLE_DEVICES=0
 
@@ -151,6 +149,8 @@ kill $SERVER_PID
 wait $SERVER_PID
 
 # input_byte_size_test
+TEST_LOG="./input_byte_size_test.log"
+TEST_EXEC=./input_byte_size_test
 cp -r /data/inferenceserver/${REPO_VERSION}/qa_identity_model_repository/{onnx_zero_1_float32,onnx_zero_1_object,onnx_zero_1_bool} ./models
 
 set +e
@@ -162,6 +162,19 @@ if [ $? -ne 0 ]; then
 fi
 set -e
 
+# backend_tensor_size_test
+TEST_LOG="./backend_tensor_size_test.log"
+TEST_EXEC=./backend_tensor_size_test
+
+set +e
+LD_LIBRARY_PATH=/opt/tritonserver/lib:$LD_LIBRARY_PATH $TEST_EXEC >> $TEST_LOG 2>&1
+if [ $? -ne 0 ]; then
+    cat $TEST_LOG
+    echo -e "\n***\n*** backend_tensor_size_test FAILED\n***"
+    RET=1
+fi
+set -e
+
 if [ $RET -eq 0 ]; then
     echo -e "\n***\n*** Input Validation Test Passed\n***"
 else

src/test/CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright 2019-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# Copyright 2019-2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -77,6 +77,45 @@ if(${TRITON_ENABLE_HTTP} OR ${TRITON_ENABLE_METRICS} OR
   )
 endif()
 
+#
+# Unit test for Backend API
+#
+add_executable(
+  backend_tensor_size_test
+  backend_tensor_size_test.cc
+)
+
+set_target_properties(
+  backend_tensor_size_test
+  PROPERTIES
+    SKIP_BUILD_RPATH TRUE
+    BUILD_WITH_INSTALL_RPATH TRUE
+    INSTALL_RPATH_USE_LINK_PATH FALSE
+    INSTALL_RPATH ""
+)
+
+target_include_directories(
+  backend_tensor_size_test
+  PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}/..
+    ${GTEST_INCLUDE_DIRS}
+)
+
+target_link_libraries(
+  backend_tensor_size_test
+  PRIVATE
+    triton-backend-utils    # from repo-backend
+    triton-core-serverapi   # from repo-core
+    triton-core-serverstub  # from repo-core
+    GTest::gtest
+    GTest::gtest_main
+)
+
+install(
+  TARGETS backend_tensor_size_test
+  RUNTIME DESTINATION bin
+)
+
 add_subdirectory(repoagent/relocation_repoagent repoagent/relocation_repoagent)
 
 add_subdirectory(distributed_addsub distributed_addsub)