public static void Execute___Should_return_registered_protocol___When_called()
{
// Arrange
var systemUnderTest = new ChainOfResponsibilityProtocolFactory();
IProtocol protocol1 = new SharedOperationProtocol1();
IProtocol protocol2 = new SiblingOperationProtocol();
IProtocol protocol3 = new SharedOperationProtocol2();
var protocolFactory1 = protocol1.ToProtocolFactory();
var protocolFactory2 = protocol2.ToProtocolFactory();
var protocolFactory3 = protocol3.ToProtocolFactory();
systemUnderTest.AddToEndOfChain(protocolFactory1);
systemUnderTest.AddToEndOfChain(protocolFactory2);
systemUnderTest.AddToEndOfChain(protocolFactory3);
var operation1 = new GetProtocolOp(new SharedOperation());
var operation2 = new GetProtocolOp(new SiblingOperation1());
var operation3 = new GetProtocolOp(new SiblingOperation2());
// Act
var actual1 = systemUnderTest.Execute(operation1);
var actual2 = systemUnderTest.Execute(operation2);
var actual3 = systemUnderTest.Execute(operation3);
// Assert
actual1.AsTest().Must().BeSameReferenceAs(protocol1);
actual2.AsTest().Must().BeSameReferenceAs(protocol2);
actual3.AsTest().Must().BeSameReferenceAs(protocol2);
}
public static void Constructor___Should_register_protocol_factories_in_order_specified___When_called()
{
// Arrange
IProtocol protocol1 = new SharedOperationProtocol1();
IProtocol protocol2 = new SiblingOperationProtocol();
IProtocol protocol3 = new SharedOperationProtocol2();
var protocolFactory1 = protocol1.ToProtocolFactory();
var protocolFactory2 = protocol2.ToProtocolFactory();
var protocolFactory3 = protocol3.ToProtocolFactory();
var systemUnderTest = new ChainOfResponsibilityProtocolFactory(new[] { protocolFactory1, protocolFactory2, protocolFactory3 });
var operation1 = new GetProtocolOp(new SharedOperation());
var operation2 = new GetProtocolOp(new SiblingOperation1());
var operation3 = new GetProtocolOp(new SiblingOperation2());
// Act
var actual1 = systemUnderTest.Execute(operation1);
var actual2 = systemUnderTest.Execute(operation2);
var actual3 = systemUnderTest.Execute(operation3);
// Assert
actual1.AsTest().Must().BeSameReferenceAs(protocol1);
actual2.AsTest().Must().BeSameReferenceAs(protocol2);
actual3.AsTest().Must().BeSameReferenceAs(protocol2);
}
public static void Execute___Should_throw_ArgumentNullException___When_parameter_operation_is_null()
{
// Arrange
var systemUnderTest = new ChainOfResponsibilityProtocolFactory();
// Act
var actual = Record.Exception(() => systemUnderTest.Execute(null));
// Assert
actual.AsTest().Must().BeOfType <ArgumentNullException>();
actual.Message.AsTest().Must().ContainString("operation");
}
public static void Execute___Should_return_null___When_there_is_no_protocol_registered_for_the_operation_and_missingProtocolStrategy_is_ReturnNull()
{
// Arrange
var systemUnderTest = new ChainOfResponsibilityProtocolFactory();
var operation = new GetProtocolOp(new SharedOperation(), MissingProtocolStrategy.ReturnNull);
// Act
var actual = systemUnderTest.Execute(operation);
// Assert
actual.AsTest().Must().BeNull();
}
public static void Execute___Should_throw_OpExecutionFailedException___When_there_is_no_protocol_registered_for_the_operation_and_missingProtocolStrategy_is_Throw()
{
// Arrange
var systemUnderTest = new ChainOfResponsibilityProtocolFactory();
var operation = new GetProtocolOp(new SharedOperation(), MissingProtocolStrategy.Throw);
// Act
var actual = Record.Exception(() => systemUnderTest.Execute(operation));
// Assert
actual.AsTest().Must().BeOfType <OpExecutionFailedException>();
actual.Message.AsTest().Must().ContainString(Invariant($"There is no protocol registered for the specified operation: '{nameof(ChainOfResponsibilityProtocolFactoryTest)}.{nameof(SharedOperation)}'"));
}
