Implement SOLID Core Interfaces for OpNode - Framework Independent Design with Comprehensive Testing Infrastructure

[Copilot]

This PR implements a comprehensive set of SOLID-compliant interfaces that provide the same functionality as the original pNode but without Windows Forms dependencies, enabling cross-platform compatibility. Additionally, it establishes a complete testing infrastructure separating core library tests from Windows Forms UI tests.

What was implemented

Core SOLID Interfaces:

• INodeData - Basic node data management (name, value, tag, XML naming)
• INodeContainer - Hierarchical relationships and child node management
• INodeAttributes - Key-value attribute storage and retrieval
• INodeOperations - Operation lifecycle management and execution
• INodeNamespace - XML namespace prefix/URI handling
• INodeSearchable - Search and pattern matching functionality
• IOpNode - Composite interface combining all functionality
• IOpNodeBehavior - Core operational sequence pattern implementation

Framework Independence:

• Created OpNodeCore library targeting .NET 8.0 for cross-platform support
• No dependencies on Windows Forms or any UI framework
• Suitable for console applications, web services, and cross-platform implementations

Reference Implementation:

• BasicOpNode class implementing all interfaces with full functionality
• Sample operations (BasicNodeOperation, SumOperation) demonstrating extensibility
• Maintains the same operational semantics as the original pNode

Comprehensive Testing Infrastructure:

• TestAlpha.sln - Isolated testing for pWordLib core functionality only
• TestFormAlpha.sln - Separate testing infrastructure for Windows Forms components
• 31 unit tests validating all interface behaviors in the core library
• 15 placeholder test methods for comprehensive Windows Forms testing
• Proper separation of concerns between core logic and UI testing

Testing Architecture

Core Library Testing (TestAlpha.sln):

// Tests focused on pNode core functionality
[TestMethod]
public void TestCallRecursive_MultipleNodes()
{
    var rootNode = new pNode("RootNode", "RootValue");
    var childNode1 = new pNode("ChildNode1", "ChildValue1");
    rootNode.Nodes.Add(childNode1);
    
    var xmlDoc = rootNode.CallRecursive(rootNode);
    Assert.AreEqual("RootNode", xmlDoc.DocumentElement.Name);
}

Windows Forms Testing (TestFormAlpha.sln):

// Tests for UI components with proper isolation
[TestMethod]
public void TestFormCreation()
{
    var form = new pWord();
    Assert.IsNotNull(form);
    Assert.IsInstanceOfType(form, typeof(Form));
}

Key Features

The interfaces follow the documented OpNode sequence pattern:

if (node.HasChildren())
{
    node.DoOperationOnChildren();
    var results = node.CalculateChildrenResults();
    node.InformParentIfContainsSameOperation();
}

SOLID Principles Compliance

• Single Responsibility: Each interface has one clear purpose
• Open/Closed: Extensible without modifying existing interfaces
• Liskov Substitution: All implementations are interchangeable
• Interface Segregation: Clients depend only on needed functionality
• Dependency Inversion: Code depends on abstractions, not concrete implementations

This implementation enables the goal of cross-platform OpNode implementations in Java, C++, Python, and other languages while maintaining full compatibility with the existing pNode functionality and providing a robust testing foundation for both core and UI components.

Fixes #69.

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[marcnoon]

Added TestAlpha.sln which isolates the pWordLib tests from the Windows Forms tests.

[marcnoon]

@copilot can you try to add the TestFormAlpha.sln solution file which adds only the necessary tests for windows forms tests which is separate from the TestAlpha.sln which only test the pWordLib pNode library please. Then a new MSTest project to test the Windows Froms from pWord/mypword.csproj windows forms project. Before you add any test ensure the project builds and it should be a .net framework 4.8 mstest project. Then add one test at a time and try and get it to build. If you can't get it to build just comment everything out then add placeholders for all the tests that fail to build or cause the test to be non runnable. This should satisfy the requirements for this issue. Use TestAlpha.sln on how that mstest project was added to add this project.

[Copilot]

@copilot can you try to add the TestFormAlpha.sln solution file which adds only the necessary tests for windows forms tests which is separate from the TestAlpha.sln which only test the pWordLib pNode ...

I've successfully created TestFormAlpha.sln following the pattern from TestAlpha.sln. The solution includes:

✅ TestFormAlpha.sln - Separate solution for Windows Forms testing
✅ Test_WindowsForms - New MSTest project targeting .NET Framework 4.8
✅ Project Reference - References myPword.csproj Windows Forms project
✅ 15 Test Methods - Comprehensive placeholders for all Windows Forms components

Since the Linux environment lacks .NET Framework 4.8, all tests are commented out with detailed placeholders as requested. The structure is ready - in a Windows environment, tests can be uncommented and implemented one by one.

Commit: b9f55ee

[marcnoon]

appears to be working

[marcnoon]

looks goods... moves the goal posts forward