public void ByCustomer_Should_Throw_ArgumentException_If_CustomerId_Is_Empty()
{
IQueryable <BillingInfo> billingInfos = new BillingInfo[0].AsQueryable();
Guid customerId = Guid.Empty;
var ex = Assert.Throws <ArgumentException>(() => BillingInfoExtensions.ByCustomer(billingInfos, customerId));
Assert.Equal(nameof(customerId), ex.ParamName);
}
public void ByCustomer_Should_Throw_ArgumentNullException_If_BillingInfos_Is_Null()
{
IQueryable <BillingInfo> billingInfos = null;
Guid customerId = Guid.NewGuid();
var ex = Assert.Throws <ArgumentNullException>(() => BillingInfoExtensions.ByCustomer(billingInfos, customerId));
Assert.Equal(nameof(billingInfos), ex.ParamName);
}
