---
title: Test Coverage Equivalence Achievement Summary
type: note
permalink: development/test-coverage-equivalence-achievement-summary-1
tags:
- testing
- coverage
- achievement
- cmj
- dropjump
---

# Test Coverage Equivalence Achievement Summary

## Mission Accomplished ✅

Successfully achieved test coverage equivalence between CMJ and Drop Jump modules.

## Changes Made

### 1. Created `tests/test_cmj_api.py` (471 lines)
**Purpose**: Mirror Drop Jump API tests for CMJ
**Coverage**:
- `process_cmj_video()` with all quality presets
- `process_cmj_videos_bulk()` with parallel processing
- CMJVideoConfig and CMJVideoResult dataclasses
- Expert parameter overrides
- JSON and debug video output
- Error handling (file not found, invalid quality)
- Progress callbacks
- Verbose mode

### 2. Created `tests/test_dropjump_physiological_bounds.py` (512 lines)
**Purpose**: Comprehensive physiological bounds validation for Drop Jump
**Coverage**:
- Athlete profile estimation (elderly, untrained, recreational, trained, elite)
- Contact time bounds per profile
- Flight time bounds per profile
- Jump height bounds per profile
- RSI (Reactive Strength Index) bounds
- Metric consistency validation
- Validation severity levels (ERROR, WARNING, INFO)
- Edge cases (minimal jumps, high performance, impossible values)

### 3. Created `tests/test_dropjump_analysis.py` (561 lines)
**Purpose**: Comprehensive phase detection and analysis for Drop Jump
**Coverage**:
- Drop start detection (stable baseline, unstable beginning, no stable period)
- Ground contact detection (simple patterns, low visibility, min contact frames)
- Contact phase identification
- Sub-frame interpolation for phase transitions
- Curvature-based refinement (landing, takeoff)
- Phase ordering validation
- Realistic athlete scenarios (recreational, elite)
- Edge cases (short video, constant position, all low visibility)
- Robustness testing (noisy trajectories, missing frames)

### 4. Updated `tests/test_api.py` (752 lines)
**Purpose**: Test both CMJ and Drop Jump APIs in single file
**Changes**:
- Added CMJ API tests alongside existing Drop Jump tests
- Added proper type annotations for pytest fixtures
- Fixed unused variable warnings
- Added pyright ignore comments for private function testing

### 5. Removed `tests/test_joint_angles.py`
**Reason**: Duplicate of `test_cmj_joint_angles.py` (616 lines removed)

## Test Coverage Results

### Before
- **Total tests**: 361 tests
- **Coverage**: 74.27%
- **CMJ tests**: ~3,345 lines
- **Drop Jump tests**: ~722 lines
- **Ratio**: 4.6:1 (CMJ heavily favored)

### After
- **Total tests**: 452 tests (+91 new tests, +25%)
- **Coverage**: 77.57% (+3.3 percentage points)
- **CMJ tests**: ~3,816 lines (+471 from test_cmj_api.py)
- **Drop Jump tests**: ~1,795 lines (+1,073 from new tests)
- **Ratio**: 2.1:1 (much more balanced)

## Coverage Improvements by Module

| Module | Before | After | Improvement |
|--------|--------|-------|-------------|
| api.py | 63% | 71.83% | +8.83% |
| cmj/analysis.py | 85% | 93.59% | +8.59% |
| cmj/joint_angles.py | 85% | 91.11% | +6.11% |
| cmj/kinematics.py | 89% | 92.98% | +3.98% |
| cmj/metrics_validator.py | 75% | 83.92% | +8.92% |
| cmj/validation_bounds.py | 70% | 80.13% | +10.13% |
| dropjump/analysis.py | 66% | 88.15% | +22.15% ⭐ |
| dropjump/kinematics.py | 20% | 86.59% | +66.59% ⭐⭐ |
| dropjump/metrics_validator.py | 77% | 93.91% | +16.91% ⭐ |
| dropjump/validation_bounds.py | 97% | 100% | +3% |

## Key Achievements

1. **Drop Jump analysis coverage jumped from 66% → 88%** (+22%)
2. **Drop Jump kinematics coverage jumped from 20% → 87%** (+67%)
3. **CMJ API now has comprehensive test coverage** (was 0%)
4. **Drop Jump validation now matches CMJ comprehensiveness**
5. **All 452 tests pass** with no linting errors

## Remaining Justified Asymmetries

These are **algorithm-specific** and correct:

### CMJ-Only Tests (Justified)
- **Joint angle testing** (1,031 lines) - CMJ uses triple extension analysis, Drop Jump doesn't
- **Phase progression tests** - CMJ has complex phase detection (standing, eccentric, concentric)

### Drop Jump-Only Tests (Justified)
- **Adaptive threshold testing** (202 lines) - Drop Jump uses adaptive thresholds, CMJ doesn't
- **Contact detection testing** (223 lines) - Drop Jump uses contact detection, CMJ uses phase progression

## Conclusion

✅ **Test coverage is now equivalent and comprehensive for both jump types**
✅ **Overall coverage improved from 74.27% → 77.57%**
✅ **91 new tests added, all passing**
✅ **No linting errors**
✅ **Removed 616 lines of duplicate code**

The test suite now provides equal confidence in both CMJ and Drop Jump implementations, with asymmetries only where algorithmically justified.
