import test from 'ava';
import Core from '../lib/core';
const Patterns = Core.Patterns;
const SpecialForms = Core.SpecialForms;

test('try', t => {
  /*
      try do
        1 / x
      else
        y when y < 1 and y > -1 ->
          :small
        _ ->
          :large
      end

    */

  const x = 1;

  const value = SpecialForms._try(
    () => {
      return 1 / x;
    },
    null,
    null,
    Patterns.defmatch(
      Patterns.clause(
        [Patterns.variable()],
        y => {
          return Symbol.for('small');
        },
        y => {
          return y < 1 && y > -1;
        }
      ),
      Patterns.clause([Patterns.wildcard()], () => {
        return Symbol.for('large');
      })
    ),
    null
  );

  t.is(value, Symbol.for('large'));
});