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var R = require('../source');var eq = require('./shared/eq');
describe('invert', function() {
  it('takes a list or object and returns an object of lists', function() {    eq(typeof R.invert([]), 'object');    eq(typeof R.invert({}), 'object');
    var inverted = R.invert([0]);    var keys = R.keys(inverted);    eq(R.is(Array, inverted[keys.pop()]), true);  });
  it('returns an empty object when applied to a primitive', function() {    eq(R.invert(42), {});    eq(R.invert('abc'), {});  });
  it('returns an empty object when applied to null/undefined', function() {    eq(R.invert(null), {});    eq(R.invert(undefined), {});  });
  it('returns the input\'s values as keys, and keys as values of an array', function() {    eq(R.invert(['a', 'b', 'c']),       {a:['0'], b:['1'], c:['2']});    eq(R.invert({x:'a', y:'b', z:'c'}), {a:['x'], b:['y'], c:['z']});  });
  it('puts keys that have the same value into the appropriate an array', function() {    eq(R.invert(['a', 'b', 'a']), {a:['0', '2'], b:['1']});
    var inverted = R.invert({x:'a', y:'b', z:'a', _id:'a'});    eq(R.indexOf('x', inverted.a) >= 0, true);    eq(R.indexOf('z', inverted.a) >= 0, true);    eq(R.indexOf('_id', inverted.a) >= 0, true);    eq(inverted.b, ['y']);  });
  // this one is more of a sanity check  it('is not destructive', function() {    var input = {x:'a', y:'b', z:'a', _id:'a'};    R.invert(input);    eq(input, {x:'a', y:'b', z:'a', _id:'a'});  });
  it('ignores inherited properties', function() {    eq(R.invert({x: 'hasOwnProperty'}), {      hasOwnProperty: ['x']    });  });
});