Use simpler syntax for default

src/Services/Catalog/Catalog.API/Extensions/LinqSelectExtensions.cs

@@ -13,7 +13,7 @@ public static class LinqSelectExtensions
             }
             catch (Exception ex)
             {
-                returnedValue = new SelectTryResult<TSource, TResult>(element, default(TResult), ex);
+                returnedValue = new SelectTryResult<TSource, TResult>(element, default, ex);
             }
             yield return returnedValue;
         }

src/Services/Ordering/Ordering.API/Application/Commands/IdentifiedCommandHandler.cs

@@ -98,7 +98,7 @@ public abstract class IdentifiedCommandHandler<T, R> : IRequestHandler<Identifie
             }
             catch
             {
-                return default(R);
+                return default;
             }
         }
     }

src/Services/Ordering/Ordering.API/Extensions/LinqSelectExtensions.cs

@@ -13,7 +13,7 @@ public static class LinqSelectExtensions
             }
             catch (Exception ex)
             {
-                returnedValue = new SelectTryResult<TSource, TResult>(element, default(TResult), ex);
+                returnedValue = new SelectTryResult<TSource, TResult>(element, default, ex);
             }
             yield return returnedValue;
         }

src/Services/Ordering/Ordering.Domain/SeedWork/Entity.cs

@@ -37,7 +37,7 @@ public abstract class Entity
 
     public bool IsTransient()
     {
-        return this.Id == default(Int32);
+        return this.Id == default;
     }
 
     public override bool Equals(object obj)

src/Services/Ordering/Ordering.Domain/SeedWork/IUnitOfWork.cs

@@ -2,6 +2,6 @@
 
 public interface IUnitOfWork : IDisposable
 {
-    Task<int> SaveChangesAsync(CancellationToken cancellationToken = default(CancellationToken));
-    Task<bool> SaveEntitiesAsync(CancellationToken cancellationToken = default(CancellationToken));
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
+    Task<bool> SaveEntitiesAsync(CancellationToken cancellationToken = default);
 }

src/Services/Ordering/Ordering.Infrastructure/OrderingContext.cs

@@ -38,7 +38,7 @@ public class OrderingContext : DbContext, IUnitOfWork
         modelBuilder.ApplyConfiguration(new BuyerEntityTypeConfiguration());
     }
 
-    public async Task<bool> SaveEntitiesAsync(CancellationToken cancellationToken = default(CancellationToken))
+    public async Task<bool> SaveEntitiesAsync(CancellationToken cancellationToken = default)
     {
         // Dispatch Domain Events collection. 
         // Choices:
@@ -120,12 +120,12 @@ public class OrderingContextDesignFactory : IDesignTimeDbContextFactory<Ordering
     {
         public IAsyncEnumerable<TResponse> CreateStream<TResponse>(IStreamRequest<TResponse> request, CancellationToken cancellationToken = default)
         {
-            return default(IAsyncEnumerable<TResponse>);
+            return default;
         }
 
         public IAsyncEnumerable<object?> CreateStream(object request, CancellationToken cancellationToken = default)
         {
-            return default(IAsyncEnumerable<object?>);
+            return default;
         }
 
         public Task Publish<TNotification>(TNotification notification, CancellationToken cancellationToken = default) where TNotification : INotification
@@ -140,7 +140,7 @@ public class OrderingContextDesignFactory : IDesignTimeDbContextFactory<Ordering
 
         public Task<TResponse> Send<TResponse>(IRequest<TResponse> request, CancellationToken cancellationToken = default)
         {
-            return Task.FromResult<TResponse>(default(TResponse));
+            return Task.FromResult<TResponse>(default);
         }
 
         public Task<object> Send(object request, CancellationToken cancellationToken = default)

src/Services/Ordering/Ordering.UnitTests/Application/IdentifiedCommandHandlerTest.cs

@@ -23,7 +23,7 @@ public class IdentifiedCommandHandlerTest
         _requestManager.Setup(x => x.ExistAsync(It.IsAny<Guid>()))
             .Returns(Task.FromResult(false));
 
-        _mediator.Setup(x => x.Send(It.IsAny<IRequest<bool>>(), default(System.Threading.CancellationToken)))
+        _mediator.Setup(x => x.Send(It.IsAny<IRequest<bool>>(), default))
             .Returns(Task.FromResult(true));
 
         //Act
@@ -33,7 +33,7 @@ public class IdentifiedCommandHandlerTest
 
         //Assert
         Assert.True(result);
-        _mediator.Verify(x => x.Send(It.IsAny<IRequest<bool>>(), default(System.Threading.CancellationToken)), Times.Once());
+        _mediator.Verify(x => x.Send(It.IsAny<IRequest<bool>>(), default), Times.Once());
     }
 
     [Fact]
@@ -46,17 +46,16 @@ public class IdentifiedCommandHandlerTest
         _requestManager.Setup(x => x.ExistAsync(It.IsAny<Guid>()))
             .Returns(Task.FromResult(true));
 
-        _mediator.Setup(x => x.Send(It.IsAny<IRequest<bool>>(), default(System.Threading.CancellationToken)))
+        _mediator.Setup(x => x.Send(It.IsAny<IRequest<bool>>(), default))
             .Returns(Task.FromResult(true));
 
         //Act
         var handler = new CreateOrderIdentifiedCommandHandler(_mediator.Object, _requestManager.Object, _loggerMock.Object);
-        var cltToken = new System.Threading.CancellationToken();
-        var result = await handler.Handle(fakeOrderCmd, cltToken);
+        var result = await handler.Handle(fakeOrderCmd, CancellationToken.None);
 
         //Assert
         Assert.False(result);
-        _mediator.Verify(x => x.Send(It.IsAny<IRequest<bool>>(), default(System.Threading.CancellationToken)), Times.Never());
+        _mediator.Verify(x => x.Send(It.IsAny<IRequest<bool>>(), default), Times.Never());
     }
 
     private CreateOrderCommand FakeOrderRequest(Dictionary<string, object> args = null)

src/Services/Ordering/Ordering.UnitTests/Application/NewOrderCommandHandlerTest.cs

@@ -31,7 +31,7 @@ public class NewOrderRequestHandlerTest
         _orderRepositoryMock.Setup(orderRepo => orderRepo.GetAsync(It.IsAny<int>()))
             .Returns(Task.FromResult<Order>(FakeOrder()));
 
-        _orderRepositoryMock.Setup(buyerRepo => buyerRepo.UnitOfWork.SaveChangesAsync(default(CancellationToken)))
+        _orderRepositoryMock.Setup(buyerRepo => buyerRepo.UnitOfWork.SaveChangesAsync(default))
             .Returns(Task.FromResult(1));
 
         _identityServiceMock.Setup(svc => svc.GetUserIdentity()).Returns(buyerId);

src/Services/Ordering/Ordering.UnitTests/Application/OrdersWebApiTest.cs

@@ -21,7 +21,7 @@ public class OrdersWebApiTest
     public async Task Cancel_order_with_requestId_success()
     {
         //Arrange
-        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<CancelOrderCommand, bool>>(), default(CancellationToken)))
+        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<CancelOrderCommand, bool>>(), default))
             .Returns(Task.FromResult(true));
 
         //Act
@@ -37,7 +37,7 @@ public class OrdersWebApiTest
     public async Task Cancel_order_bad_request()
     {
         //Arrange
-        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<CancelOrderCommand, bool>>(), default(CancellationToken)))
+        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<CancelOrderCommand, bool>>(), default))
             .Returns(Task.FromResult(true));
 
         //Act
@@ -52,7 +52,7 @@ public class OrdersWebApiTest
     public async Task Ship_order_with_requestId_success()
     {
         //Arrange
-        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<ShipOrderCommand, bool>>(), default(System.Threading.CancellationToken)))
+        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<ShipOrderCommand, bool>>(), default))
             .Returns(Task.FromResult(true));
 
         //Act
@@ -68,7 +68,7 @@ public class OrdersWebApiTest
     public async Task Ship_order_bad_request()
     {
         //Arrange
-        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<CreateOrderCommand, bool>>(), default(System.Threading.CancellationToken)))
+        _mediatorMock.Setup(x => x.Send(It.IsAny<IdentifiedCommand<CreateOrderCommand, bool>>(), default))
             .Returns(Task.FromResult(true));
 
         //Act

src/Web/WebMVC/Extensions/SessionExtensions.cs

@@ -7,7 +7,7 @@
     {
         var value = session.GetString(key);
 
-        return value == null ? default(T) : JsonSerializer.Deserialize<T>(value, new JsonSerializerOptions
+        return value == null ? default : JsonSerializer.Deserialize<T>(value, new JsonSerializerOptions
         {
             PropertyNameCaseInsensitive = true
         });