public void DecreaseBundleOfMinutes_ValidPhoneAndConnection_DecreasedValue()
{
//Arrange
ConnectionBl validConnection = new ConnectionBl
{
TimeOfConnectionInSeconds = 20
};
int secondsLeft = validPhone.SecondsLeftInBundle - validConnection.TimeOfConnectionInSeconds;
var dataObjectMapperMock = new Mock <IDataObjectMapper>();
var subscribersSystemDbContextMock = new Mock <ISubscribersSystemDbContext>();
var phoneService = new PhoneService(() => subscribersSystemDbContextMock.Object, dataObjectMapperMock.Object);
//Act
var result = phoneService.DecreaseBundleOfMinutes(validPhone, validConnection);
//Assert
Assert.AreEqual(secondsLeft, result);
}