'use strict';

import { 
  mutation_type, mutate,
  is_valid,
} from './genome';


test('basic gene mutations', () => {
  expect(mutate([0, 1, 2], mutation_type.none, 0)).toEqual([0, 1, 2]);

  expect(mutate([0, 1, 2], mutation_type.source, 0.2)).toEqual([0, 1, 2]);
  expect(mutate([1, 1, 2], mutation_type.source, 0.2)).toEqual([0, 1, 2]);
  expect(mutate([0, 1, 2], mutation_type.source, 0.8)).toEqual([1, 1, 2]);

  expect(mutate([0, 1, 2], mutation_type.sink, 0.2)).toEqual([0, 0, 2]);
  expect(mutate([0, 1, 2], mutation_type.sink, 0.8)).toEqual([0, 2, 2]);
  expect(mutate([0, 0, 2], mutation_type.sink, 0.2)).toEqual([0, 0, 2]);

  expect(mutate([0, 1, 2], mutation_type.weight, 0.5)).toEqual([0, 1, 1]);
  expect(mutate([0, 1, 2], mutation_type.weight, 0.0)).toEqual([0, 1, -1]);
  expect(mutate([0, 1, 2], mutation_type.weight, 1.0)).toEqual([0, 1, 3]);
});


test('genome validation', () => {
  expect(is_valid(0, 0, [ [ 0, 0, 1.0 ] ])).toBe(true);
  expect(is_valid(2, 1, [ [ 0, 2, 1 ] ])).toBe(true);
  expect(is_valid(2, 1, [ [ 0, 1, 1 ] ])).toBe(false);
  expect(is_valid(2, 1, [ [ 0, 2, 5 ] ])).toBe(false);
});