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

describe('unapply', function() {  it('returns a function which is always passed one argument', function() {    var fn = R.unapply(function() { return arguments.length; });    eq(fn(), 1);    eq(fn('x'), 1);    eq(fn('x', 'y'), 1);    eq(fn('x', 'y', 'z'), 1);  });
  it('forwards arguments to decorated function as an array', function() {    var fn = R.unapply(function(xs) { return '[' + xs + ']'; });    eq(fn(), '[]');    eq(fn(2), '[2]');    eq(fn(2, 4), '[2,4]');    eq(fn(2, 4, 6), '[2,4,6]');  });
  it('returns a function with length 0', function() {    var fn = R.unapply(R.identity);    eq(fn.length, 0);  });
  it('is the inverse of R.apply', function() {    var a, b, c, d, e, f, g, n;    var rand = function() {      return Math.floor(200 * Math.random()) - 100;    };
    f = Math.max;    g = R.unapply(R.apply(f));    n = 1;    while (n <= 100) {      a = rand(); b = rand(); c = rand(); d = rand(); e = rand();      eq(f(a, b, c, d, e), g(a, b, c, d, e));      n += 1;    }
    f = function(xs) { return '[' + xs + ']'; };    g = R.apply(R.unapply(f));    n = 1;    while (n <= 100) {      a = rand(); b = rand(); c = rand(); d = rand(); e = rand();      eq(f([a, b, c, d, e]), g([a, b, c, d, e]));      n += 1;    }  });
});