func invariantBananaLimit(ctx *runway.Context) error {
env := ctx.Env.(*env)
if env.bananas <= 8 {
return nil
}
return runway.AssertionFailure("assertion failed: bananas <= 8")
}
func bananaRangeCheck(ctx *runway.Context) error {
env := ctx.Env.(*env)
if env.bananas >= 0 && env.bananas <= 100 {
return nil
}
return runway.AssertionFailure("bananas out of range: 0..100")
}