Question

我有一个装饰器（当前）使用$log.error数据创建一个对象并将其记录到控制台。它最终将被发送到服务器。

我很难用Jasmine测试这个$提供商。

我不断收到错误

TypeError: 'undefined' is not an object (evaluating '$log.info.logs.push')

这条线

original.apply($delegate, data);

提供者：

$provide.decorator('$log', [
    '$delegate',
    function($delegate){
        var levels = ['debug', 'info', 'warn', 'error'],
            contentType = 'application/json; charset=UTF-8';

        _.each(levels, function(level) {

            // storing the original function
            var original = $delegate[ level ];

            // creating a wrapped version of each $log level function
            $delegate[ level ] = _.wrap(original, function(original) {

                // logger data to be sent/logged to console
                var data = Array.prototype.slice.call(arguments, 1);
                // call to the original function which will write to the console
                original.apply($delegate, data);

                var postData = { date: moment(new Date()).toISOString(), level: level, message: data[ 0 ].message, stack: data[ 0 ].stack };

                console.log(postData);
            });
        });
        // returning to $log object with the new wrapped log-level functions
        return $delegate;
    }
]);

茉莉花测试

describe('$log decorator', function() {

    var $log;
    beforeEach(module('ngMock'));
    beforeEach(module('myApp'));

    beforeEach(inject(function(_$log_) {
        $log = _$log_;
    }))

    it('should contain the error', function() {
        var exception = {
            message: "Error Message",
            stack: "Error Stack"
        };

        $log.error(exception);

        dump($log.error)
        expect($log.error).toBeDefined();

    });
});

Answer 1

您可以尝试通过调用

注入测试/控制器之前重置$ log

$log.reset()

这将设置

log.info.logs = []

所以你不再得到错误了。此外，您的测试可能更具侵略性

expect(log.error.logs).toContain(['Error Message']);

希望它有所帮助。

Jasmine Test $ log装饰器

1 个答案: