/**
* The ObjectAssert object provides functions to test JavaScript objects
* for a variety of cases.
*
* @class ObjectAssert
* @static
*/
Y.ObjectAssert = {
areEqual: function(expected, actual, message) {
Y.Assert._increment();
Y.Object.each(expected, function(value, name){
if (expected[name] != actual[name]){
throw new Y.Assert.ComparisonFailure(Y.Assert._formatMessage(message, "Values should be equal for property " + name), expected[name], actual[name]);
}
});
},
/**
* Asserts that an object has a property with the given name.
* @param {String} propertyName The name of the property to test.
* @param {Object} object The object to search.
* @param {String} message (Optional) The message to display if the assertion fails.
* @method hasKey
* @static
*/
hasKey: function (propertyName, object, message) {
Y.Assert._increment();
if (!Y.Object.hasKey(object, propertyName)){
Y.fail(Y.Assert._formatMessage(message, "Property '" + propertyName + "' not found on object."));
}
},
/**
* Asserts that an object has all properties of a reference object.
* @param {Array} properties An array of property names that should be on the object.
* @param {Object} object The object to search.
* @param {String} message (Optional) The message to display if the assertion fails.
* @method hasKeys
* @static
*/
hasKeys: function (properties, object, message) {
Y.Assert._increment();
for (var i=0; i < properties.length; i++){
if (!Y.Object.hasKey(object, properties[i])){
Y.fail(Y.Assert._formatMessage(message, "Property '" + properties[i] + "' not found on object."));
}
}
},
/**
* Asserts that a property with the given name exists on an object instance (not on its prototype).
* @param {String} propertyName The name of the property to test.
* @param {Object} object The object to search.
* @param {String} message (Optional) The message to display if the assertion fails.
* @method ownsKey
* @static
*/
ownsKey: function (propertyName, object, message) {
Y.Assert._increment();
if (!object.hasOwnProperty(propertyName)){
Y.fail(Y.Assert._formatMessage(message, "Property '" + propertyName + "' not found on object instance."));
}
},
/**
* Asserts that all properties exist on an object instance (not on its prototype).
* @param {Array} properties An array of property names that should be on the object.
* @param {Object} object The object to search.
* @param {String} message (Optional) The message to display if the assertion fails.
* @method ownsKeys
* @static
*/
ownsKeys: function (properties, object, message) {
Y.Assert._increment();
for (var i=0; i < properties.length; i++){
if (!object.hasOwnProperty(properties[i])){
Y.fail(Y.Assert._formatMessage(message, "Property '" + properties[i] + "' not found on object instance."));
}
}
},
/**
* Asserts that an object owns no properties.
* @param {Object} object The object to check.
* @param {String} message (Optional) The message to display if the assertion fails.
* @method ownsNoKeys
* @static
*/
ownsNoKeys : function (object, message) {
Y.Assert._increment();
var keys = Y.Object.keys(object);
if (keys.length > 0){
Y.fail(Y.Assert._formatMessage(message, "Object owns " + keys.length + " properties but should own none."));
}
}
};