We want to use new feature to check the exception message #2904. It was merged to master on Aug 23, 2020. But currently this code is not included into any existing releases / tags.
Last release was more than a year ago. Oct 3, 2019

//   EXPECT_THAT(
//       []() { throw std::runtime_error("message"); },
//       ThrowsMessage<std::runtime_error>(HasSubstr("message")));