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

describe('curryN', function() {  function source(a, b, c, d) {    void d;    return a * b * c;  }  it('accepts an arity', function() {    var curried = R.curryN(3, source);    eq(curried(1)(2)(3), 6);    eq(curried(1, 2)(3), 6);    eq(curried(1)(2, 3), 6);    eq(curried(1, 2, 3), 6);  });
  it('can be partially applied', function() {    var curry3 = R.curryN(3);    var curried = curry3(source);    eq(curried.length, 3);    eq(curried(1)(2)(3), 6);    eq(curried(1, 2)(3), 6);    eq(curried(1)(2, 3), 6);    eq(curried(1, 2, 3), 6);  });
  it('preserves context', function() {    var ctx = {x: 10};    var f = function(a, b) { return a + b * this.x; };    var g = R.curryN(2, f);
    eq(g.call(ctx, 2, 4), 42);    eq(g.call(ctx, 2).call(ctx, 4), 42);  });
  it('supports R.__ placeholder', function() {    var f = function() { return Array.prototype.slice.call(arguments); };    var g = R.curryN(3, f);    var _ = R.__;
    eq(g(1)(2)(3), [1, 2, 3]);    eq(g(1)(2, 3), [1, 2, 3]);    eq(g(1, 2)(3), [1, 2, 3]);    eq(g(1, 2, 3), [1, 2, 3]);
    eq(g(_, 2, 3)(1), [1, 2, 3]);    eq(g(1, _, 3)(2), [1, 2, 3]);    eq(g(1, 2, _)(3), [1, 2, 3]);
    eq(g(1, _, _)(2)(3), [1, 2, 3]);    eq(g(_, 2, _)(1)(3), [1, 2, 3]);    eq(g(_, _, 3)(1)(2), [1, 2, 3]);
    eq(g(1, _, _)(2, 3), [1, 2, 3]);    eq(g(_, 2, _)(1, 3), [1, 2, 3]);    eq(g(_, _, 3)(1, 2), [1, 2, 3]);
    eq(g(1, _, _)(_, 3)(2), [1, 2, 3]);    eq(g(_, 2, _)(_, 3)(1), [1, 2, 3]);    eq(g(_, _, 3)(_, 2)(1), [1, 2, 3]);
    eq(g(_, _, _)(_, _)(_)(1, 2, 3), [1, 2, 3]);    eq(g(_, _, _)(1, _, _)(_, _)(2, _)(_)(3), [1, 2, 3]);  });
  it('supports @@functional/placeholder', function() {    var f = function() { return Array.prototype.slice.call(arguments); };    var g = R.curryN(3, f);    var _ = {'@@functional/placeholder': true, x: Math.random()};
    eq(g(1)(2)(3), [1, 2, 3]);    eq(g(1)(2, 3), [1, 2, 3]);    eq(g(1, 2)(3), [1, 2, 3]);    eq(g(1, 2, 3), [1, 2, 3]);
    eq(g(_, 2, 3)(1), [1, 2, 3]);    eq(g(1, _, 3)(2), [1, 2, 3]);    eq(g(1, 2, _)(3), [1, 2, 3]);
    eq(g(1, _, _)(2)(3), [1, 2, 3]);    eq(g(_, 2, _)(1)(3), [1, 2, 3]);    eq(g(_, _, 3)(1)(2), [1, 2, 3]);
    eq(g(1, _, _)(2, 3), [1, 2, 3]);    eq(g(_, 2, _)(1, 3), [1, 2, 3]);    eq(g(_, _, 3)(1, 2), [1, 2, 3]);
    eq(g(1, _, _)(_, 3)(2), [1, 2, 3]);    eq(g(_, 2, _)(_, 3)(1), [1, 2, 3]);    eq(g(_, _, 3)(_, 2)(1), [1, 2, 3]);
    eq(g(_, _, _)(_, _)(_)(1, 2, 3), [1, 2, 3]);    eq(g(_, _, _)(1, _, _)(_, _)(2, _)(_)(3), [1, 2, 3]);  });
  it('forwards extra arguments', function() {    var f = function() { return Array.prototype.slice.call(arguments); };    var g = R.curryN(3, f);
    eq(g(1, 2, 3), [1, 2, 3]);    eq(g(1, 2, 3, 4), [1, 2, 3, 4]);    eq(g(1, 2)(3, 4), [1, 2, 3, 4]);    eq(g(1)(2, 3, 4), [1, 2, 3, 4]);    eq(g(1)(2)(3, 4), [1, 2, 3, 4]);  });
});