import assert from 'assert';
import lodashStable from 'lodash';
import { _, LARGE_ARRAY_SIZE, square, isEven } from './utils.js';

describe('zipObject methods', function() {
  lodashStable.each(['zipObject', 'zipObjectDeep'], function(methodName) {
    var func = _[methodName],
        object = { 'barney': 36, 'fred': 40 },
        isDeep = methodName == 'zipObjectDeep';

    it('`_.' + methodName + '` should zip together key/value arrays into an object', function() {
      var actual = func(['barney', 'fred'], [36, 40]);
      assert.deepStrictEqual(actual, object);
    });

    it('`_.' + methodName + '` should ignore extra `values`', function() {
      assert.deepStrictEqual(func(['a'], [1, 2]), { 'a': 1 });
    });

    it('`_.' + methodName + '` should assign `undefined` values for extra `keys`', function() {
      assert.deepStrictEqual(func(['a', 'b'], [1]), { 'a': 1, 'b': undefined });
    });

    it('`_.' + methodName + '` should ' + (isDeep ? '' : 'not ') + 'support deep paths', function() {
      lodashStable.each(['a.b.c', ['a', 'b', 'c']], function(path, index) {
        var expected = isDeep ? ({ 'a': { 'b': { 'c': 1 } } }) : (index ? { 'a,b,c': 1 } : { 'a.b.c': 1 });
        assert.deepStrictEqual(func([path], [1]), expected);
      });
    });

    it('`_.' + methodName + '` should work in a lazy sequence', function() {
      var values = lodashStable.range(LARGE_ARRAY_SIZE),
          props = lodashStable.map(values, function(value) { return 'key' + value; }),
          actual = _(props)[methodName](values).map(square).filter(isEven).take().value();

      assert.deepEqual(actual, _.take(_.filter(_.map(func(props, values), square), isEven)));
    });
  });
});