public async Task BeerExists_GivenAnNonExistingBeerId_ShouldReturnFalse()
{
//Arrange
var guid = Guid.NewGuid();
var mockedBrandQuery = new Mock <IBrandQuery>();
mockedBrandQuery.Setup(query => query.GetBeer(It.IsAny <Guid>()))
.ReturnsAsync((Beer)null);
var brandValidation = new BrandValidation(mockedBrandQuery.Object);
//Act
var result = await brandValidation.BeerExists(guid);
//Assert
Assert.False(result);
}
