Add test suite for PSNR and SSIM image quality metrics

[Copilot]

Test Suite Implementation - COMPLETE ✅

• Install Vitest testing framework and necessary dependencies
• Configure Vitest for TypeScript and React testing
• Create test file for imageQuality.ts (PSNR and SSIM metrics)
• Implement PSNR correctness tests (16 tests)
• Implement SSIM tests (5 tests)
• Add test scripts to package.json
• Run tests to verify correctness - 21/21 tests passing! ✅
• Document test suite usage
• Migrate to Spark renderer (@sparkjsdev/spark) from GaussianSplats3D
• Resolve merge conflicts with main branch

Latest Update: Merge Conflicts Resolved

Successfully resolved merge conflicts by rebasing onto the latest main branch. The branch now includes all updates from main while maintaining the test suite functionality.

Changes Made:

• ✅ Rebased branch onto latest main (commit 2932632)
• ✅ Resolved package-lock.json conflicts by regenerating
• ✅ Integrated new files from main: SESSION_STATE.md, README.md updates, bonsai test files, screenshot
• ✅ All 21 tests still passing
• ✅ Build successful
• ✅ No conflicts remaining

Test Results:

✓ 21 tests passed
⏱ ~730ms
Build: successful (3.84s)

The test suite is now fully compatible with the latest main branch and ready for merge.

Original prompt

create a test suit starting with checking whether the psnr metric is correct

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[chektien]

@copilot the main branch has changed substantially with the base renderer changed to spark. See if you need to edit anything first

[Copilot]

@copilot the main branch has changed substantially with the base renderer changed to spark. See if you need to edit anything first

Updated the test suite to use Spark renderer (@sparkjsdev/spark) in commit c5eecd1. All changes from main branch have been merged:

• Migrated from @mkkellogg/gaussian-splats-3d to @sparkjsdev/spark
• Updated imageQuality.ts to use SparkViewerContext API
• Updated all hooks and components
• Fixed test setup for better compatibility
• All 21 tests passing ✓
• Build successful ✓

[chektien]

can you check the conflicts and resolve them? @copilot

[chektien]

@copilot

[Copilot]

can you check the conflicts and resolve them? @copilot

Conflicts resolved! Rebased the branch onto latest main (commit 2932632). The package-lock.json conflict was resolved by regenerating it with npm install.

Changes integrated from main:

• SESSION_STATE.md updates
• README.md improvements
• Bonsai test files (.ply, .splat, .ksplat, .spz)
• Screenshot.png

All tests passing ✓ (21/21)
Build successful ✓

The branch is ready but needs a force push to update the remote. The rebased commits are:

• 2b32d81: Migrate test suite to use Spark renderer
• 42b6e2c: Add test suite summary documentation
• a8d261b: Add comprehensive test suite for PSNR and SSIM metrics
• 6ef2fe6: Initial plan

@copilot

The merge conflicts have been resolved. The branch has been successfully rebased onto the latest main branch and all tests are passing.