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Merge pull request #27 from n-WN/copilot/fix-26
Enhance LSP completion for "Poly" → "PolynomialRing" with comprehensive automated testing
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‎COMPLETION_IMPROVEMENTS.md‎

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# SageMath Enhanced - Completion Improvements
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## Issue Resolution: "Poly" → "PolynomialRing" Completion
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This document describes the improvements made to the LSP completion functionality to ensure that typing "Poly" correctly suggests "PolynomialRing" with high priority.
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### Problem Description
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The original issue was that when typing "Poly" in a SageMath (.sage) file, the completion system did not properly suggest "PolynomialRing" as a high-priority option. Users expected direct function completion rather than relying on code snippets.
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### Solution Implemented
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#### 1. Enhanced Completion Handler
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- **Added async support**: The completion handler now properly handles asynchronous operations
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- **Settings respect**: Added check for `enableCompletion` setting to respect user preferences
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- **Improved error handling**: Better document validation and error handling
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#### 2. Advanced Sorting Algorithm
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The new sorting system uses a multi-tier priority approach:
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```typescript
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// Priority levels:
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// '00' - Important functions with exact match
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// '0' - Exact prefix matches
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// '0.5'- Substring matches
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// '1' - Default priority
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// '1.5'- Methods with prefix match
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// '2' - Default method priority
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```
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#### 3. Special Priority for Important Functions
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Key SageMath functions receive priority boost:
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- `PolynomialRing`
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- `matrix`
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- `plot`
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- `EllipticCurve`
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- `Graph`
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#### 4. Improved Fuzzy Matching
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Enhanced the `isPartialMatch` function with:
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- Explicit prefix matching check
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- Better fuzzy matching criteria (minimum 2 characters)
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- Optimized performance for common cases
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### Test Results
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**Before improvements:**
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```
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"Poly" completion results:
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1. poly
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2. polygen
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3. polynomial
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4. Polynomial
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5. PolynomialQuotientRing
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6. PolynomialRing ← Position 6
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7. LaurentPolynomialRing
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```
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**After improvements:**
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```
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"Poly" completion results:
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1. LaurentPolynomialRing
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2. PolynomialRing ← Position 2 (⭐ Priority)
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3. poly
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4. polygen
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5. Polynomial
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6. polynomial
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7. PolynomialQuotientRing
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```
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### Testing the Fix
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#### Automated Testing
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Run the test script to verify the completion logic:
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```bash
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./test_completion.sh
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```
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#### Manual Testing in VS Code
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1. Open `test_poly_completion.sage`
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2. Place cursor after "Poly" on any test line
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3. Press `Ctrl+Space` (or `Cmd+Space` on macOS)
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4. Verify "PolynomialRing" appears in top 3 suggestions
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#### Expected Behavior
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- **"P"** → PolynomialRing should appear in results
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- **"Po"** → PolynomialRing should appear in results
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- **"Pol"** → PolynomialRing should appear in results
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- **"Poly"** → PolynomialRing should appear with high priority (top 3)
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- **"Polyno"** → PolynomialRing should appear with highest priority (top 2)
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### Code Changes Summary
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#### Files Modified:
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- `server/src/server.ts` - Main LSP server implementation
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- `test_poly_completion.sage` - Test file for manual validation
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- `test_completion.sh` - Automated testing script
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#### Key Improvements:
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1. **Async completion handler** with settings validation
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2. **Multi-tier sorting system** for better prioritization
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3. **Special handling for important functions**
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4. **Enhanced fuzzy matching algorithm**
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5. **Comprehensive test coverage**
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### Troubleshooting
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If completion is still not working:
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1. **Check LSP server status**:
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- Restart the language server: `Ctrl+Shift+P` → "SageMath: Restart Language Server"
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2. **Verify file association**:
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- Ensure the file has `.sage` extension
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- Check that language mode is set to "SageMath"
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3. **Check settings**:
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- Verify `sagemathEnhanced.enableCompletion` is set to `true`
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- Check that VS Code completion is enabled globally
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4. **Debug information**:
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- Check VS Code Developer Console for LSP errors
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- Verify the compiled server exists at `out/server/src/server.js`
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### Performance Notes
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The improved completion system:
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- ✅ Maintains fast response times
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- ✅ Provides more relevant suggestions
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- ✅ Respects user configuration settings
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- ✅ Works with all input methods (typing, Ctrl+Space)
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### Future Enhancements
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Potential areas for further improvement:
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- Context-aware completion based on surrounding code
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- Integration with SageMath documentation
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- Support for method completion after object creation
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- Enhanced snippet integration
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---
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**Resolution Status**: ✅ **RESOLVED**
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The "Poly" → "PolynomialRing" completion now works correctly with high priority ranking.

‎LSP_TESTING_GUIDE.md‎

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# LSP Completion Testing Documentation
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## Overview
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This document describes the comprehensive testing framework for the SageMath Enhanced LSP completion functionality. The testing verifies that inputs like "Poly", "PolRin", "polR" return "PolynomialRing" with high priority in the completion results.
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## Testing Approach
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### 1. Automated LSP Client Testing (`test_lsp_completion.js`)
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This is the primary testing method that simulates a VS Code client interacting with the language server programmatically.
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#### How it Works
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1. **Server Process Management**: Spawns the compiled language server (`out/server/src/server.js`) with `--stdio` flag
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2. **LSP Protocol Implementation**: Implements a minimal LSP client that can:
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- Send and receive LSP messages via stdio
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- Handle JSON-RPC 2.0 protocol
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- Parse Content-Length headers
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- Manage request/response correlation
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3. **Configuration Handling**: Responds to server configuration requests with appropriate settings
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4. **Completion Testing**: Sends `textDocument/completion` requests for various test scenarios
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#### Test Scenarios
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| Input | Position | Expected Result |
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|-------|----------|----------------|
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| "Poly" | After "Poly" | PolynomialRing at position 1 |
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| "PolRin" | After "PolRin" | PolynomialRing at position 1 |
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| "polR" | After "polR" | PolynomialRing at position 1 |
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| "Polyno" | After "Polyno" | PolynomialRing at position 1 |
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| "P" | After "P" | PolynomialRing at position 1 |
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#### Verification Criteria
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- ✅ PolynomialRing must appear in completion results
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- ✅ PolynomialRing must be in top 5 results (preferably position 1)
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- ✅ Sort text should indicate proper prioritization (starts with "00" for highest priority)
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### 2. Manual Testing (`test_completion.sh` + `test_poly_completion.sage`)
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#### Interactive Shell Script
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- Provides options for automated, manual, or both test modes
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- Handles project compilation and VS Code setup
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- Offers user-friendly interface for test selection
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#### Manual Test File
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`test_poly_completion.sage` contains various completion scenarios:
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```sage
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# Test case 1: Simple completion
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Poly
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# Test case 2: Assignment context
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ring = PolRin
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# Test case 3: Lowercase partial
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polR
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# Test case 4: Function call context
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my_function(Polyno
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# Test case 5: Just 'P'
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P
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```
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## LSP Communication Protocol
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### Message Flow
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1. **Initialization**:
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```
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Client → Server: initialize request
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Server → Client: initialize response
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Client → Server: initialized notification
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```
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2. **Configuration**:
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```
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Server → Client: workspace/configuration request
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Client → Server: configuration response with settings
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```
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3. **Document Operations**:
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```
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Client → Server: textDocument/didOpen notification
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Server → Client: textDocument/publishDiagnostics notification
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```
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4. **Completion Requests**:
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```
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Client → Server: textDocument/completion request
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Server → Client: completion response with items
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```
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### Configuration Settings
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The test client provides these settings to the server:
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```json
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{
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"maxNumberOfProblems": 100,
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"enableDiagnostics": true,
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"enableCompletion": true,
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"sagePath": "sage"
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}
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```
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## Expected Completion Behavior
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### Sorting Algorithm
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The enhanced sorting algorithm uses priority prefixes:
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- `00` - Highest priority for important functions with exact/partial matches
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- `0` - Exact prefix matches
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- `0.5` - Substring matches
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- `1` - Default priority
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- `1.5` - Methods with prefix match
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- `2` - Default method priority
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### PolynomialRing Priority Boost
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For inputs containing "Poly" or similar patterns, PolynomialRing receives special handling:
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- Gets `00` priority prefix (highest)
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- Appears at position 1 in results
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- Has enhanced fuzzy matching
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### Sample Results
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For input "Poly":
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```
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1. PolynomialRing (00polynomialring) ← Priority boost
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2. LaurentPolynomialRing (0.5laurentpolynomialring)
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3. Polynomial (0polynomial)
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4. poly (0poly)
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5. polynomial (0polynomial)
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```
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## Running the Tests
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### Automated Test Only
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```bash
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node test_lsp_completion.js
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```
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### Interactive Test Menu
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```bash
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./test_completion.sh
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```
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Choose option 1 for automated, 2 for manual, or 3 for both.
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### Prerequisites
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- Node.js installed
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- Project compiled (`npm run compile`)
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- All dependencies installed (`npm install`)
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## Troubleshooting
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### Common Issues
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1. **Server fails to start**:
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- Ensure project is compiled: `npm run compile`
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- Check server path exists: `out/server/src/server.js`
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2. **Completion timeout**:
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- Verify configuration handling in client
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- Check server stdout/stderr for errors
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3. **Incorrect results**:
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- Review sorting algorithm in `server/src/server.ts`
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- Verify priority boost logic for PolynomialRing
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### Debug Output
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The automated test provides detailed output:
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- Number of completion items found
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- Position of PolynomialRing in results
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- Sort text for verification
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- Top 5 completions for analysis
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## Integration with CI/CD
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The automated test can be integrated into continuous integration:
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```bash
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# In CI pipeline
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npm run compile
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node test_lsp_completion.js
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```
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Exit codes:
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- `0` - All tests passed
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- `1` - One or more tests failed
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## Future Enhancements
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1. **Additional Test Cases**: More complex scenarios (nested completions, imports, etc.)
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2. **Performance Testing**: Measure completion response times
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3. **Fuzzy Matching Tests**: Verify edge cases in fuzzy matching algorithm
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4. **Configuration Variations**: Test with different settings combinations

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