Add automated tests and CI integration with fs_tester support

[Copilot]

Completed: Add Automatic Tests and CI Integration

• Explore repository structure and understand the codebase
• Check existing CI configuration
• Understand build system and dependencies
• Research fs_tester from dmvfs repository
• Create tests directory structure
• Add test documentation (README.md)
• Create CMakeLists.txt for test building
• Update main CMakeLists.txt to support building tests
• Update CI workflow to build and run tests
• Add integration test script for fs_tester
• Update main README with testing information
• Address all code review comments
• Make tests fully cross-platform compatible
• Run security checks (no issues found)
• Fix CI test failure - module must be built before tests run

Summary of Changes

This PR successfully implements automatic tests and CI integration for dmdevfs as requested in issue #10.

Latest Fix:

Fixed CI test failure by ensuring the module is built in the test directory before running tests. The test was failing because it tried to verify the existence of dmdevfs.dmf which wasn't built in the build_tests directory.

Files Modified/Added:

• .github/workflows/ci.yml - Added test building and execution steps, fixed to build before testing
• CMakeLists.txt - Added DMDEVFS_BUILD_TESTS option
• README.md - Added testing section
• tests/CMakeLists.txt - Build verification test suite
• tests/README.md - Comprehensive testing documentation
• tests/run_integration_tests.sh - Script for fs_tester integration

Test Coverage:

1. Automated CI Tests (running on every push/PR):

   • Module build verification
   • DMF directory creation check
   • Module file existence verification
   • Cross-platform compatible

2. fs_tester Integration (documented for manual use):

   • Script for running fs_tester from dmvfs
   • Read-only mode support as suggested
   • Clear instructions for setup and use

Security:

• CodeQL scan completed: 0 vulnerabilities found
• All code reviewed and comments addressed
• Clean, minimal changes following best practices

Original prompt

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This section details on the original issue you should resolve

<issue_title>Dopisać automatyczne testy i dodać odpalanie ich na CI</issue_title>
<issue_description>tak jak w tytule - trzeba dopisać automatyczne testy i odpalać je na CI.

Można też spróbować odpalić fs_testera z https://github.com/choco-technologies/dmvfs
Nie jestem pewien, czy jest szansa, żeby przechodziły - ale w trybie read-only chyba powinny. Jeśli tak, to dobrze by było je też dodać do CI</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Dopisać automatyczne testy i dodać odpalanie ich na CI #10

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[JohnAmadis]

@copilot Jeden z testów failuje na CI - napraw to proszę nawet jeśli to jest faktyczny błąd niezwiązany z tym PR

Test command: /usr/bin/cmake "-E" "copy_if_different" "/__w/dmdevfs/dmdevfs/build_tests/dmf/dmdevfs.dmf" "/__w/dmdevfs/dmdevfs/build_tests/dmf/dmdevfs.dmf.test"
3: Working Directory: /__w/dmdevfs/dmdevfs/build_tests/tests
3: Test timeout computed to be: 10000000
3: Error copying file (if different) from "/__w/dmdevfs/dmdevfs/build_tests/dmf/dmdevfs.dmf" to "/__w/dmdevfs/dmdevfs/build_tests/dmf/dmdevfs.dmf.test".
3/5 Test #3: dmdevfs_dmf_file .................***Failed 0.00 sec
Error copying file (if different) from "/__w/dmdevfs/dmdevfs/build_tests/dmf/dmdevfs.dmf" to "/__w/dmdevfs/dmdevfs/build_tests/dmf/dmdevfs.dmf.test".

[Copilot]

@copilot Jeden z testów failuje na CI - napraw to proszę nawet jeśli to jest faktyczny błąd niezwiązany z tym PR

Test command: /usr/bin/cmake "-E" "copy_if_different" "/__w/dmdevfs/dmdevfs/bu...

Fixed in commit 2783a15. The test was failing because the CI workflow wasn't building the module in the test directory before running tests. The workflow now runs cmake --build . in the build_tests directory before executing ctest, ensuring the dmdevfs.dmf file exists when the test runs.