# Comprehensive Test Plan for jinja2-async-environment

## Overview

This test plan addresses the current test failures and provides a roadmap for increasing test coverage and adding performance/benchmarking tests to the jinja2-async-environment library.

## Current Issues Analysis

### 1. Constructor Signature Issues
- **AsyncFunctionLoader**: Expects 1 parameter but tests pass 2
- **AsyncChoiceLoader**: Expects 1 parameter but tests pass 2
- **AsyncPackageLoader**: Missing import_module in loaders module

### 2. Method Signature Issues
- **get_source_async**: Methods missing required `name` parameter
- **AsyncBaseLoader**: Method signatures need to be fixed

### 3. Environment Parameter Handling
- Tests not properly passing environment parameter to loader methods

## Test Coverage Improvement Plan

### Module-by-Module Coverage

#### 1. AsyncEnvironment Module
- [ ] Test all constructor parameters
- [ ] Test get_template_async with various inputs
- [ ] Test select_template_async with various inputs
- [ ] Test get_or_select_template_async with various inputs
- [ ] Test _load_template_async with various inputs
- [ ] Test _get_template_async with various inputs
- [ ] Test cache functionality
- [ ] Test auto_reload functionality
- [ ] Test error handling for missing loaders

#### 2. AsyncSandboxedEnvironment Module
- [ ] Test sandbox functionality
- [ ] Test restricted operations
- [ ] Test security features

#### 3. Loaders Module
- [ ] Test AsyncBaseLoader constructor and methods
- [ ] Test AsyncFileSystemLoader with various path types
- [ ] Test AsyncDictLoader with various mappings
- [ ] Test AsyncFunctionLoader with sync and async functions
- [ ] Test AsyncPackageLoader with various packages
- [ ] Test AsyncChoiceLoader with multiple loaders
- [ ] Test loader combination scenarios
- [ ] Test error handling in all loaders

#### 4. Compiler Module
- [ ] Test AsyncCodeGenerator compilation
- [ ] Test async yield from functionality
- [ ] Test macro compilation
- [ ] Test filter compilation
- [ ] Test complex template compilation

#### 5. Cache Module
- [ ] Test AsyncBytecodeCache
- [ ] Test Redis cache functionality
- [ ] Test cache eviction policies
- [ ] Test cache performance

## Performance/Benchmarking Tests

### 1. Template Rendering Performance
- [ ] Simple template rendering benchmark
- [ ] Complex template rendering benchmark
- [ ] Template inheritance rendering benchmark
- [ ] Template inclusion rendering benchmark
- [ ] Macro rendering benchmark
- [ ] Filter rendering benchmark

### 2. Template Compilation Performance
- [ ] Simple template compilation benchmark
- [ ] Complex template compilation benchmark
- [ ] Template with macros compilation benchmark
- [ ] Template with filters compilation benchmark
- [ ] Cached compilation vs fresh compilation

### 3. Loader Operations Performance
- [ ] FileSystemLoader template loading benchmark
- [ ] DictLoader template loading benchmark
- [ ] FunctionLoader template loading benchmark
- [ ] PackageLoader template loading benchmark
- [ ] ChoiceLoader template loading benchmark
- [ ] Loader cache hit vs miss performance

### 4. Concurrency Performance
- [ ] Concurrent template rendering benchmark
- [ ] High-concurrency template loading benchmark
- [ ] Thread safety tests
- [ ] Async/await performance tests

### 5. Memory Usage Tests
- [ ] Template cache memory usage
- [ ] Compilation cache memory usage
- [ ] Loader memory usage
- [ ] Memory leak detection

## Integration Tests

### 1. Loader Combinations
- [ ] FileSystemLoader + DictLoader with ChoiceLoader
- [ ] FunctionLoader + PackageLoader with ChoiceLoader
- [ ] Nested ChoiceLoader scenarios
- [ ] Mixed loader scenarios

### 2. Complex Template Scenarios
- [ ] Template inheritance chains
- [ ] Template inclusion trees
- [ ] Macro-heavy templates
- [ ] Filter-heavy templates
- [ ] Custom filter integration
- [ ] Custom test integration

### 3. Real-world Usage Patterns
- [ ] Web framework integration (FastAPI, Starlette)
- [ ] Batch template processing
- [ ] Dynamic template generation
- [ ] Template caching strategies

## Error Handling and Edge Cases

### 1. Template Not Found Scenarios
- [ ] Non-existent template files
- [ ] Invalid template names
- [ ] Permission denied scenarios
- [ ] Corrupted template files

### 2. Loader Error Handling
- [ ] FileSystemLoader path errors
- [ ] DictLoader mapping errors
- [ ] FunctionLoader function errors
- [ ] PackageLoader import errors
- [ ] ChoiceLoader fallback errors

### 3. Compilation Errors
- [ ] Syntax errors in templates
- [ ] Invalid macro definitions
- [ ] Invalid filter usage
- [ ] Invalid template inheritance

### 4. Runtime Errors
- [ ] Context variable errors
- [ ] Filter execution errors
- [ ] Macro execution errors
- [ ] Async generator errors

## Backward Compatibility Tests

### 1. API Compatibility
- [ ] Constructor parameter compatibility
- [ ] Method signature compatibility
- [ ] Return type compatibility
- [ ] Exception type compatibility

### 2. Import Compatibility
- [ ] Module import paths
- [ ] Class import paths
- [ ] Function import paths
- [ ] Deprecated API warnings

### 3. Behavior Compatibility
- [ ] Template rendering output
- [ ] Error message consistency
- [ ] Performance characteristics
- [ ] Cache behavior

## Implementation Roadmap

### Phase 1: Fix Current Issues (Priority)
1. Fix AsyncFunctionLoader constructor signature
2. Fix AsyncChoiceLoader constructor signature
3. Fix get_source_async method signatures
4. Fix environment parameter handling
5. Fix AsyncPackageLoader import issues

### Phase 2: Core Coverage Improvement
1. Add missing unit tests for all modules
2. Add integration tests for loader combinations
3. Add error handling tests
4. Add edge case tests

### Phase 3: Performance Testing
1. Implement benchmark tests for all core operations
2. Add concurrency stress tests
3. Add memory usage tests
4. Add performance regression tests

### Phase 4: Advanced Testing
1. Add backward compatibility tests
2. Add real-world scenario tests
3. Add security tests (for sandboxed environment)
4. Add long-running stability tests

## Success Criteria

1. **Test Coverage**: Increase from current ~41% to 90%+
2. **Performance**: Maintain or improve current performance baselines
3. **Stability**: Zero test failures in CI/CD pipeline
4. **Compatibility**: 100% backward compatibility maintained
5. **Documentation**: All new tests properly documented

## Monitoring and Maintenance

1. **Continuous Integration**: All tests run on every commit
2. **Performance Regression**: Automated performance monitoring
3. **Code Coverage**: Automated coverage reporting
4. **Security Scanning**: Regular security vulnerability scans