This project provides an extension to the Google Test framework, to allow testing of MPI enabled applications. The implementation includes a custom listener, with which all test failure messages are collected on the root process and the output includes the rank index for each failure.
- GoogleTest version 1.12.0 and later
- MPI
- Compiler with C++ 14 support.
- Each test must include a guard macro, which enables exchange of test results
- All ranks must execute all tests in the same order. Within a test, the executed assertions may differ. If a test should run only on a subset of ranks, the excluded ranks must enter the test, but may exit immediately.
- Logging features of Google Test are not supported
#include <mpi.h>
#include "gtest/gtest.h"
#include "gtest_mpi/gtest_mpi.hpp"
int main(int argc, char*
5C13
argv[]) {
// Initialize MPI before any call to gtest_mpi
int provided;
MPI_Init_thread(&argc, &argv, MPI_THREAD_FUNNELED, &provided);
// Initialize including registering custom listener. Will call InitGoogleTest internally.
gtest_mpi::InitGoogleTestMPI(&argc, argv);
auto status = RUN_ALL_TESTS();
MPI_Finalize();
return status;
}
#include "gtest/gtest.h"
#include "gtest_mpi/gtest_mpi.hpp"
TEST(TestSuiteName, TestName) {
// Guard must be present in each test
GTEST_MPI_GUARD
// Generate failure message
EXPECT_DOUBLE_EQ(1.0, 2.0);
}