Assertions are a way of breaking out of code when there is an error or an unexpected input.

Some languages throw exceptions and some treat it as a break point.



Task

Show an assertion in your language by asserting that an integer variable is equal to 42.




class MAIN
    creation main
    feature main is
        local
            test: TEST;
        do
            create test;
 
            io.read_integer;
            test.assert(io.last_integer);
        end
end