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

describe('flip', function() {  it('returns a function which inverts the first two arguments to the supplied function', function() {    var f = function(a, b, c) {return a + ' ' + b + ' ' + c;};    var g = R.flip(f);    eq(f('a', 'b', 'c'), 'a b c');    eq(g('a', 'b', 'c'), 'b a c');  });
  it('returns a curried function', function() {    var f = function(a, b, c) {return a + ' ' + b + ' ' + c;};    var g = R.flip(f)('a');    eq(g('b', 'c'), 'b a c');  });
  it('returns a function with the correct arity', function() {    var f2 = function(a, b) {return a + ' ' + b;};    var f3 = function(a, b, c) {return a + ' ' + b + ' ' + c;};    eq(R.flip(f2).length, 2);    eq(R.flip(f3).length, 3);  });
});
describe('flip properties', function() {  jsv.property('inverts first two arguments', funcN(3), jsv.json, jsv.json, jsv.json, function(f, a, b, c) {    var g = R.flip(f);    return R.equals(f(a, b, c), g(b, a, c));  });});