context("C++ API") test_that("header and DLL API versions match", { Rcpp::cppFunction( code = ' int later_dll_api_version() { int (*dll_api_version)() = (int (*)()) R_GetCCallable("later", "apiVersion"); return (*dll_api_version)(); } ' ) Rcpp::cppFunction( depends = 'later', includes = ' #include ', code = ' int later_h_api_version() { return LATER_H_API_VERSION; } ' ) expect_identical(later_dll_api_version(), later_h_api_version()) })