hasRequiredAttribute asmine Matchers

hasRequiredAttributeSpec.js

  beforeEach(function() {
        jasmine.addMatchers({
            // 
            // actual: data object to check for property
            // 
            // expected: property or property chain as string
            // 
            hasRequiredAttribute: function() {
                return {
                    compare: function(actual, expected) {
                        var result = {},

                            key, // current target key/scope
                            keys, // all
                            scope = actual, // scope cause we gonna dig deep

                            // results dont exist until we find them!
                            value = undefined;


                        if (expected.indexOf('.') < 0) {
                            // if not nested property do shallow test
                            // 
                            value = actual[expected];
                        } else {
                            keys = expected.split('.');
                            for (var i = 0; i < keys.length; i++) {
                                key = keys[i];

                                if (typeof(scope[key]) !== 'undefined') {
                                    scope = scope[key];

                                    if (i === keys.length - 1) {
                                        // since this is last check, lets return the value
                                        value = scope;
                                    }
                                }
                            }

                        }

                        // if (typeof(value) === 'object') {
                        //     // result.message = expected + ' is an object. Please defined a spefic property.';
                        // }

                        result.pass = (typeof(value) !== 'undefined');
                        result.message = expected + ' is not a defined attribute ( value: ' + value + ' )!';
                        
                        return result;
                        //The compare function must return a result object with: 
                        // 1. A 'pass' property that is a boolean result of the matcher
                        // 2. A 'message' property that is a string to show details when test get failed. 
                    }
                };
            }
        });
    });