public void CallDataSaveChangesMethod()
{
//Arrange
var barsRepoMock = new Mock <IEntityFrameworkRepository <ShishaBar> >();
barsRepoMock.Setup(x => x.Add(It.IsAny <ShishaBar>())).Verifiable();
var dataMock = new Mock <IShishaTimeData>();
dataMock.Setup(x => x.Bars).Verifiable();
dataMock.Setup(x => x.Bars).Returns(barsRepoMock.Object);
dataMock.Setup(x => x.SaveChanges()).Verifiable();
var barsService = new BarsService(dataMock.Object);
var mockedBar = new Mock <ShishaBar>();
//Act
barsService.AddBar(mockedBar.Object);
//Assert
dataMock.Verify(x => x.SaveChanges(), Times.Once());
}