import assert from 'assert';
import lodashStable from 'lodash';
import matches from '../matches.js';

describe('matches', function() {
  it('should not change behavior if `source` is modified', function() {
    var sources = [
      { 'a': { 'b': 2, 'c': 3 } },
      { 'a': 1, 'b': 2 },
      { 'a': 1 }
    ];

    lodashStable.each(sources, function(source, index) {
      var object = lodashStable.cloneDeep(source),
          par = matches(source);

      assert.strictEqual(par(object), true);

      if (index) {
        source.a = 2;
        source.b = 1;
        source.c = 3;
      } else {
        source.a.b = 1;
        source.a.c = 2;
        source.a.d = 3;
      }
      assert.strictEqual(par(object), true);
      assert.strictEqual(par(source), false);
    });
  });
});