public async Task CreatorUserNameShouldReturnUserNameOfUserThatCreatedThatAdvertisement()
        {
            // Arrange
            var db = this.Context;

            this.PopulateData(db);

            var advertisementsService = new AdvertisementService(db);
            var advertisementId       = 1;

            // Act
            var result = await advertisementsService.CreatorUserName(advertisementId);

            // Assert
            result
            .Should()
            .Be("pesho");
        }