KF-34 add tests for FltCommunicationPort

[Kellesi]

Task: https://jira.dev.local/jira/browse/KF-34

[Copilot]

Pull Request Overview

This PR adds comprehensive unit tests for the FltCommunicationPort class using mock objects to avoid dependencies on actual Windows kernel APIs. The implementation introduces a dependency injection pattern through IWinApi interface abstraction to enable testability.

• Introduces IWinApi interface and WinApi wrapper class for Windows API abstraction
• Creates WinApiMock for testing FltCommunicationPort functionality
• Adds comprehensive test coverage for FltCommunicationPort creation, error handling, and cleanup scenarios

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
test/pch.h	Adds fltKernel.h include for filter manager types
test/WinApiMock.h	Implements mock Windows API for unit testing
test/FltCommunicationPortTest.cpp	Comprehensive test suite for FltCommunicationPort
test/CMakeLists.txt	Adds new test files to build configuration
include/kf/WinApi.h	Production wrapper implementing IWinApi interface
include/kf/IWinApi.h	Interface definition for Windows API abstraction
include/kf/FltCommunicationPort.h	Updates to use IWinApi dependency injection

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[Copilot]

Static variable 'freeCalled' could cause race conditions or state pollution between test runs. Consider using a non-static variable or resetting it before each test.

Suggested change

	static bool freeCalled = false;
	apiMock.m_funcs.FltFreeSecurityDescriptor = [](PSECURITY_DESCRIPTOR) { freeCalled = true; };
	bool freeCalled = false;
	apiMock.m_funcs.FltFreeSecurityDescriptor = [&freeCalled](PSECURITY_DESCRIPTOR) { freeCalled = true; };

[Copilot]

Another static variable 'freeCalled' that could cause race conditions or state pollution between test runs. Consider using a non-static variable or resetting it before each test.

Suggested change

	static bool freeCalled = false;
	apiMock.m_funcs.FltCloseCommunicationPort = [](PFLT_PORT) { freeCalled = true; };
	bool freeCalled = false;
	apiMock.m_funcs.FltCloseCommunicationPort = [&freeCalled](PFLT_PORT) { freeCalled = true; };