C++ Test

ci/run_ctests.sh

@@ -6,5 +6,9 @@ set -euo pipefail
 # Support customizing the ctests' install location
 cd "${INSTALL_PREFIX:-${CONDA_PREFIX:-/usr}}/bin/tests/libkvikio/"
 
-# Run BASIC_IO_TEST
-./BASIC_IO_TEST
+# Run basic tests
+./BASIC_IO_EXAMPLE
+./BASIC_NO_CUDA_EXAMPLE
+
+# Run gtests
+ctest --no-tests=error --output-on-failure "$@"

cpp/CMakeLists.txt

@@ -37,6 +37,7 @@ rapids_cmake_build_type(Release)
 
 # build options
 option(KvikIO_BUILD_EXAMPLES "Configure CMake to build examples" ON)
+option(KvikIO_BUILD_TESTS "Configure CMake to build tests" ON)
 
 rapids_cmake_support_conda_env(conda_env MODIFY_PREFIX_PATH)
 
@@ -144,10 +145,14 @@ if(KvikIO_BUILD_EXAMPLES)
   add_subdirectory(examples)
 endif()
 
-# optionally build tests
 if(KvikIO_BUILD_TESTS AND CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
   include(cmake/thirdparty/get_gtest.cmake)
-  include(CTest) # calls enable_testing()
+
+  # include CTest module -- automatically calls enable_testing()
+  include(CTest)
+
+  # Always print verbose output when tests fail if run using `make test`.
+  list(APPEND CMAKE_CTEST_ARGUMENTS "--output-on-failure")
   add_subdirectory(tests)
 endif()
 

cpp/cmake/thirdparty/get_gtest.cmake

@@ -1,5 +1,5 @@
 # =============================================================================
-# Copyright (c) 2021-2023, NVIDIA CORPORATION.
+# Copyright (c) 2021-2024, NVIDIA CORPORATION.
 #
 # Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 # in compliance with the License. You may obtain a copy of the License at
@@ -17,24 +17,7 @@ function(find_and_configure_gtest)
   include(${rapids-cmake-dir}/cpm/gtest.cmake)
 
   # Find or install GoogleTest
-  rapids_cpm_gtest(
-    BUILD_EXPORT_SET kvikio-testing-exports INSTALL_EXPORT_SET kvikio-testing-exports
-  )
-
-  if(GTest_ADDED)
-    rapids_export(
-      BUILD GTest
-      VERSION ${GTest_VERSION}
-      EXPORT_SET GTestTargets
-      GLOBAL_TARGETS gtest gmock gtest_main gmock_main
-      NAMESPACE GTest::
-    )
-
-    include("${rapids-cmake-dir}/export/find_package_root.cmake")
-    rapids_export_find_package_root(
-      BUILD GTest [=[${CMAKE_CURRENT_LIST_DIR}]=] EXPORT_SET kvikio-testing-exports
-    )
-  endif()
+  rapids_cpm_gtest(BUILD_STATIC)
 
 endfunction()
 

cpp/examples/CMakeLists.txt

@@ -14,19 +14,23 @@
 
 set(TEST_INSTALL_PATH bin/tests/libkvikio)
 
+# Example: basic_io
+
 if(CUDAToolkit_FOUND)
-  add_executable(BASIC_IO_TEST basic_io.cpp)
-  set_target_properties(BASIC_IO_TEST PROPERTIES INSTALL_RPATH "\$ORIGIN/../../lib")
-  target_include_directories(BASIC_IO_TEST PRIVATE ../include ${cuFile_INCLUDE_DIRS})
-  target_link_libraries(BASIC_IO_TEST PRIVATE kvikio CUDA::cudart)
+  add_executable(BASIC_IO_EXAMPLE basic_io.cpp)
+  set_target_properties(BASIC_IO_EXAMPLE PROPERTIES INSTALL_RPATH "\$ORIGIN/../../lib")
+  target_include_directories(BASIC_IO_EXAMPLE PRIVATE ../include ${cuFile_INCLUDE_DIRS})
+  target_link_libraries(BASIC_IO_EXAMPLE PRIVATE kvikio CUDA::cudart)
 
   if(CMAKE_COMPILER_IS_GNUCXX)
     set(KVIKIO_CXX_FLAGS "-Wall;-Werror;-Wno-unknown-pragmas")
-    target_compile_options(BASIC_IO_TEST PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${KVIKIO_CXX_FLAGS}>")
+    target_compile_options(
+      BASIC_IO_EXAMPLE PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${KVIKIO_CXX_FLAGS}>"
+    )
   endif()
 
   install(
-    TARGETS BASIC_IO_TEST
+    TARGETS BASIC_IO_EXAMPLE
     COMPONENT testing
     DESTINATION ${TEST_INSTALL_PATH}
     EXCLUDE_FROM_ALL
@@ -35,20 +39,22 @@ else()
   message(STATUS "Cannot build the basic_io example when CUDA is not found")
 endif()
 
-add_executable(BASIC_NO_CUDA_TEST basic_no_cuda.cpp)
-set_target_properties(BASIC_NO_CUDA_TEST PROPERTIES INSTALL_RPATH "\$ORIGIN/../../lib")
-target_include_directories(BASIC_NO_CUDA_TEST PRIVATE ../include)
-target_link_libraries(BASIC_NO_CUDA_TEST PRIVATE kvikio)
+# Example: basic_no_cuda
+
+add_executable(BASIC_NO_CUDA_EXAMPLE basic_no_cuda.cpp)
+set_target_properties(BASIC_NO_CUDA_EXAMPLE PROPERTIES INSTALL_RPATH "\$ORIGIN/../../lib")
+target_include_directories(BASIC_NO_CUDA_EXAMPLE PRIVATE ../include)
+target_link_libraries(BASIC_NO_CUDA_EXAMPLE PRIVATE kvikio)
 
 if(CMAKE_COMPILER_IS_GNUCXX)
   set(KVIKIO_CXX_FLAGS "-Wall;-Werror;-Wno-unknown-pragmas")
   target_compile_options(
-    BASIC_NO_CUDA_TEST PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${KVIKIO_CXX_FLAGS}>"
+    BASIC_NO_CUDA_EXAMPLE PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${KVIKIO_CXX_FLAGS}>"
   )
 endif()
 
 install(
-  TARGETS BASIC_NO_CUDA_TEST
+  TARGETS BASIC_NO_CUDA_EXAMPLE
   COMPONENT testing
   DESTINATION ${TEST_INSTALL_PATH}
   EXCLUDE_FROM_ALL

cpp/tests/CMakeLists.txt

@@ -0,0 +1,43 @@
+# =============================================================================
+# Copyright (c) 2024, NVIDIA CORPORATION.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+# in compliance with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License
+# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+# or implied. See the License for the specific language governing permissions and limitations under
+# the License.
+# =============================================================================
+
+# ##################################################################################################
+# enable testing -----------------------------------------------------------------------------------
+# ##################################################################################################
+enable_testing()
+
+include(rapids-test)
+rapids_test_init()
+
+file(GLOB SOURCES "*.cpp")
+add_executable(cpp_tests ${SOURCES})
+set_target_properties(
+  cpp_tests
+  PROPERTIES RUNTIME_OUTPUT_DIRECTORY "$<BUILD_INTERFACE:${KvikIO_BINARY_DIR}/gtests>"
+             CXX_STANDARD 17
+             CXX_STANDARD_REQUIRED ON
+             # For std:: support of __int128_t. Can be removed once using cuda::std
+             CXX_EXTENSIONS ON
+             CUDA_STANDARD 17
+             CUDA_STANDARD_REQUIRED ON
+)
+target_link_libraries(cpp_tests PRIVATE kvikio::kvikio GTest::gmock GTest::gtest)
+rapids_test_add(
+  NAME cpp_tests
+  COMMAND cpp_tests
+  GPUS 1
+  INSTALL_COMPONENT_SET testing
+)
+
+rapids_test_install_relocatable(INSTALL_COMPONENT_SET testing DESTINATION bin/tests/libkvikio)

cpp/tests/main.cpp

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2024, NVIDIA CORPORATION.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+int main(int argc, char** argv)
+{
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}

cpp/tests/test_basic_io.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2024, NVIDIA CORPORATION.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <kvikio/file_handle.hpp>
+
+#include "utils.hpp"
+
+using namespace kvikio::test;
+
+TEST(BasicIO, write_read)
+{
+  TempDir tmp_dir{false};
+  auto filepath = tmp_dir.path() / "test";
+
+  auto dev_a = DevBuffer::arange(100);
+  auto dev_b = DevBuffer::zero_like(dev_a);
+
+  {
+    kvikio::FileHandle f(filepath, "w");
+    auto nbytes = f.write(dev_a.ptr, dev_a.nbytes, 0, 0);
+    EXPECT_EQ(nbytes, dev_a.nbytes);
+  }
+
+  {
+    kvikio::FileHandle f(filepath, "r");
+    auto nbytes = f.read(dev_b.ptr, dev_b.nbytes, 0, 0);
+    EXPECT_EQ(nbytes, dev_b.nbytes);
+    expect_equal(dev_a, dev_b);
+  }
+}