Updates for FPPTest corresponding to UT cmake update for protected/private

[m-aleem]

Related Issue(s)	#3446
Has Unit Tests (y/n)	Yes - Existing
Documentation Included (y/n)	N/A

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Change Description

I locally updated fprime/cmake/settings.cmake to change -DPROTECTED=protected -DPRIVATE=private. This causes additional build errors beyond all our updates in manual code for PRIVATE->private and PROTECTED->protected due to auto-coded files which use PRIVATE, PROTECTED. This set of changes is associated with fixing Fpp so that the UTs in this directory can build and pass.

Approach/changes in this case was:

1. In components, re-name existing Tester.hpp/cpp to follow friendship name pattern and allow private/protected access (example: ActiveTestTester.hpp/cpp) then update the existing Tester.hpp to point to the new file in order to keep the test structure
2. Re-name Fpp/dp tests to DpTestTester to follow friendship name pattern and allow private/protected access
3. Refactor all FppTest/state_machine/internal_instance/state files to move tests into their own <x>Tester.hpp/cpp classes, again to follow friendship name pattern and allow private/protected access

Rationale

#3446

Future Work

1. Note that this PR does not include the update to fprime/cmake/settings.cmake itself

[Copilot]

Pull Request Overview

This PR refactors the FPPTest unit tests to support the recent cmake update for protected/private by moving inline test functions out of production classes and into dedicated Tester classes. Key changes include:

• Renaming and relocating test functions (e.g., in StateToState, BasicGuard, BasicInternal, etc.) into corresponding Tester classes that are declared as friends to access private/protected members.
• Updating include directives and CMakeLists.txt files to incorporate the new tester files.
• Removing redundant inline test methods from production source to improve maintainability.

Reviewed Changes

Copilot reviewed 110 out of 110 changed files in this pull request and generated no comments.

File	Description
Multiple source files under FppTest/state_machine/internal_instance/state/	Moved inline test methods from production classes into separate Tester classes and updated friend declarations accordingly.
CMakeLists.txt	Updated to include new tester source files ensuring all new test classes are integrated into the build.

Comments suppressed due to low confidence (2)

FppTest/state_machine/internal_instance/state/StateToState.cpp:70

• The removal of inline test methods from the production StateToState class is a good step for separation of concerns; please ensure that the corresponding StateToStateTester class provides equal or greater test coverage to maintain robustness.

    this->m_smStateStateToState_actionHistory.push(signal, ActionId::ENTER_S5);

[LeStarch]

@bocchino and @Kronos3 would one of you review

[m-aleem]

@bocchino Incorporated the changes we discussed at todays tag up, this should be ready for-review/merge (and, once merged, the additional steps to coordinate F-Prime/FPP for this task are in a comment in nasa/fpp#754)

[bocchino]

Looks good! I noticed that some of the changes required reformatting, so I reformatted all the code. That caused major changes in some files that had not previously been formatted in the standard way.

@LeStarch @Kronos3 if you want to review this further, I can make a branch of nasa/devel with just the reformatting, for comparison. Let me know.