1 #define CATCH_CONFIG_MAIN 2 3 #include <catch2/catch.hpp> 4 Factorial(int number)5int Factorial( int number ) { 6 return number <= 1 ? 1 : Factorial( number - 1 ) * number; 7 } 8 9 TEST_CASE( "Factorial Tests", "[single-file]" ) { 10 REQUIRE( Factorial(0) == 1 ); 11 REQUIRE( Factorial(1) == 1 ); 12 REQUIRE( Factorial(2) == 2 ); 13 REQUIRE( Factorial(3) == 6 ); 14 REQUIRE( Factorial(10) == 3628800 ); 15 }