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var R = require('../source');var eq = require('./shared/eq');

describe('into', function() {  var add = R.add;  var isOdd = function(b) {return b % 2 === 1;};  var addXf = {    '@@transducer/step': add,    '@@transducer/init': R.always(0),    '@@transducer/result': R.identity  };
  it('transduces into arrays', function() {    eq(R.into([], R.map(add(1)), [1, 2, 3, 4]), [2, 3, 4, 5]);    eq(R.into([], R.filter(isOdd), [1, 2, 3, 4]), [1, 3]);    eq(R.into([], R.compose(R.map(add(1)), R.take(2)), [1, 2, 3, 4]), [2, 3]);  });
  it('transduces into strings', function() {    eq(R.into('', R.map(add(1)), [1, 2, 3, 4]), '2345');    eq(R.into('', R.filter(isOdd), [1, 2, 3, 4]), '13');    eq(R.into('', R.compose(R.map(add(1)), R.take(2)), [1, 2, 3, 4]), '23');  });
  it('transduces into objects', function() {    eq(R.into({}, R.identity, [['a', 1], ['b', 2]]), {a: 1, b: 2});    eq(R.into({}, R.identity, [{a: 1}, {b: 2, c: 3}]), {a: 1, b: 2, c: 3});  });
  it('dispatches to objects that implement `reduce`', function() {    var obj = {x: [1, 2, 3], reduce: function() { return 'override'; }};    eq(R.into([], R.map(add(1)), obj), 'override');    eq(R.into([], R.filter(isOdd), obj), 'override');  });
  it('allows custom transformer', function() {    var intoSum = R.into(addXf);    var add2 = R.map(add(2));    var result = intoSum(add2);    eq(result([1, 2, 3, 4]), 18);  });
});