samples/hello_service/unittests/say_hello_test.cpp

#include "say_hello.hpp"
 
#include <userver/utest/utest.hpp>
 
UTEST(SayHelloTo, Basic) {
    EXPECT_EQ(samples::hello::SayHelloTo("Developer"), "Hello, Developer!\n");
    EXPECT_EQ(samples::hello::SayHelloTo({}), "Hello, unknown user!\n");
}