import { sense_read } from './sense.js';


test("basic sense works", () => {
  const flag_sense = {
    size: 1,
    read: (world, agent) => {
      const {x, y} = agent;
      return [ world.lattice[y-1][x].type === 'flag' ? 1.0 : 0.0 ]
    },
  };

  const lattice = [[ { type: 'flag' } ]];
  const agent = { x: 0, y: 1 };

  expect(sense_read({lattice}, agent, flag_sense)).toEqual([1.0]);
});


test("senses throw if the size is incorrect", () => {
  const flag_sense = {
    size: 2,
    read: (world, agent) => {
      const {x, y} = agent;
      return [ world.lattice[y-1][x].type === 'flag' ? 1.0 : 0.0 ]
    },
  }

  const lattice = [[ { type: 'flag' } ]];
  const agent = { x: 0, y: 1 };

  expect(() => sense_read({lattice}, agent, flag_sense)).toThrow();
});