use crate::functions::expression::InputSchema;
use super::example_inputs;
pub fn check_input_schema(input_schema: &InputSchema) -> Result<(), String> {
let perms = example_inputs::permutations(input_schema);
if perms < 2 {
return Err(format!(
"QI01: input_schema must produce at least 2 distinct example inputs, \
got {}",
perms
));
}
Ok(())
}