These exercises contain code with some common ruby gotchas. They should be fixed without rewriting the whole code and with introducing just minor changes.
Implement iftrue and iffalse methods in TrueClass and FalseClass in order to check for condition without using if else keywords see lib/condition_validator.rb to see how it should work
Implement a Car class with the following methods:
Implement this class in a way to prevent engine from reporting Engine errors(see lib/engine).
Analyze that class to see what it does.
Make it possible to chain start, accelerate, and stop methods:
To run tests execute