Protractor 'toContain' error

问题

This is my expect:

expect(mandatoryFields[index].getAttribute('class')).toContain('error');

This is the error in console:

Expected['formControl ng-pristine ng-untouched ng-valid ng-empty ng-valid-maxlength error'] to contain 'error'.

Eventhough the class contains ERROR class name, protractor is still throwing error. What could be reason? Any help!!!

回答1:

Instead of toContain try using toMatch. toContain is used to check whether the required value is present in an array or not. whereas toMatch uses regex for validating the text present in any value.

回答2:

You could try adding a custom matcher in your beforeEach(), then calling expect(mandatoryFields[index]).toHaveClass('error');

jasmine.addMatchers([
toHaveClass: function () {
        return {
            compare: function (element, className) {
                return {
                    pass: element.getAttribute('class').then(function (classes) {
                        return classes.split(' ').indexOf(className) !== -1||classes.split(' ').indexOf(className+"\n") !== -1;
                    }),
                    message: "Expected elemenet to have class: "+className
                }
            },
            negativeCompare: function(element, className){
                return {
                    pass: element.getAttribute('class').then(function (classes) {
                        return classes.split(' ').indexOf(className) !== -1||classes.split(' ').indexOf(className+"\n") === -1;
                    }),
                    message: "Expected element not to have class: " + className
                }
            }
        }
    }
]);

来源：https://stackoverflow.com/questions/39589630/protractor-tocontain-error