WebQuiz Stress Test

Performance testing tool for WebQuiz servers - simulate concurrent users taking quizzes to measure server performance, identify bottlenecks, and validate scalability.

Features

• Concurrent client simulation: Async execution with configurable number of clients
• Realistic user behavior: Random delays between answers, optional page reloads, registration updates
• Randomized quiz support: Automatically follows server-provided question order for each client
• Approval workflow testing: Supports both auto-approved and manual approval scenarios
• Detailed statistics: Response times (min/avg/max/median), success rates, error tracking
• Request breakdown: Separate stats for register, verify, submit answer, and approve operations
• Multiple installation options: PyPI package, standalone binaries, or from source

Quick Start

Installation

Option 1: Install from PyPI (recommended)

pip install webquiz-stress-test
webquiz-stress-test --help

Option 2: Download pre-built binary

Download the latest binary for your platform from Releases:

• Linux: webquiz-stress-test-linux.zip
• macOS Intel: webquiz-stress-test-macos-intel.zip
• macOS Apple Silicon: webquiz-stress-test-macos-apple-silicon.zip
• Windows: webquiz-stress-test-windows.exe.zip

# Linux/macOS example
unzip webquiz-stress-test-linux.zip
chmod +x webquiz-stress-test-linux
./webquiz-stress-test-linux --help

Option 3: Install from source

git clone https://github.com/oduvan/webquiz-stress-test.git
cd webquiz-stress-test
poetry install
poetry run webquiz-stress-test --help

Basic Usage

# Test with 10 concurrent users (default)
webquiz-stress-test

# Heavy load test with 100 users
webquiz-stress-test -c 100

# Test custom server with specific delays
webquiz-stress-test -u http://localhost:9000 --delay-min 0.2 --delay-max 1.5

# Test with approval workflow
webquiz-stress-test --wait-for-approval -k your_master_key

Command-Line Options

Option	Description	Default
-u, --url	Server URL	http://localhost:8080
-c, --clients	Number of concurrent clients	10
--delay-min	Minimum delay between answers (seconds)	0.5
--delay-max	Maximum delay between answers (seconds)	2.0
--reload-prob	Page reload probability (0.0-1.0)	0.1
--update-registration-prob	Registration update probability (0.0-1.0)	0.2
--wait-for-approval	Enable approval workflow testing	false
--no-wait-for-approval	Don't wait for approval (assume auto-approved)	N/A
-k, --master-key	Master key for admin operations	None
--approval-timeout	Approval wait timeout (seconds)	30.0

Usage Examples

Load Testing

Test with 50 concurrent users:

webquiz-stress-test -c 50 --delay-min 0.3 --delay-max 1.0

Rapid-fire test (minimal delays):

webquiz-stress-test -c 100 --delay-min 0.1 --delay-max 0.3

Realistic Behavior Simulation

Test with frequent page reloads (30% probability):

webquiz-stress-test --reload-prob 0.3

Test with high registration update rate:

webquiz-stress-test --update-registration-prob 0.5

Approval Workflow Testing

Test approval workflow (requires admin to approve users manually):

# Terminal 1: Start WebQuiz server with master key
webquiz --master-key test123

# Terminal 2: Run stress test with approval workflow
webquiz-stress-test --wait-for-approval -k test123

Output Example

============================================================
WebQuiz Stress Test
============================================================
Server URL: http://localhost:8080
Number of clients: 50
Answer delay range: 0.5s - 2.0s
Reload probability: 10.0%
Update registration probability: 20.0%
Wait for approval: False
============================================================

[Client 1] Registered as StressTest_User_1_1234567890 (user_id: 123456)
[Client 2] Registered as StressTest_User_2_1234567890 (user_id: 789012)
...

Overall Statistics:
  Duration: 45.23s
  Clients Started: 50
  Clients Completed: 48
  Clients Failed: 2
  Completion Rate: 96.00%

Request Statistics:
------------------------------------------------------------

Register:
  Total Requests: 50
  Success: 50
  Failures: 0
  Success Rate: 100.00%
  Avg Response Time: 0.025s
  Min Response Time: 0.015s
  Max Response Time: 0.089s
  Median Response Time: 0.023s

Submit Answer:
  Total Requests: 480
  Success: 476
  Failures: 4
  Success Rate: 99.17%
  Avg Response Time: 0.018s
  Min Response Time: 0.010s
  Max Response Time: 0.156s
  Median Response Time: 0.016s

How It Works

The stress test simulates realistic user behavior:

1. Registration: Each client registers with a unique username
2. Optional Updates: Some clients update their registration (configurable probability)
3. Approval Wait (optional): If approval workflow is enabled, clients wait for admin approval
4. Quiz Taking: Clients fetch quiz metadata and answer all questions sequentially
5. Random Delays: Configurable delays between answers to simulate thinking time
6. Page Reloads: Optional page reloads to simulate real user behavior
7. Statistics Collection: All requests are timed and success/failure rates tracked

Supported Features

• Randomized quizzes: Follows server-provided question_order for each client
• Sequential answering: Enforces server-side validation for randomized quizzes
• Approval workflow: Supports both manual and auto-approval modes
• Session persistence: Maintains cookies across requests
• Error handling: Graceful handling of network errors and timeouts

Development

Building from Source

# Clone repository
git clone https://github.com/oduvan/webquiz-stress-test.git
cd webquiz-stress-test

# Install dependencies
poetry install

# Run from source
poetry run webquiz-stress-test -c 10

Building Binary

# Build binary for current platform
poetry run build_binary

# Binary will be created at:
./dist/webquiz-stress-test

# Run the binary
./dist/webquiz-stress-test --help

Requirements

• Python 3.9+
• aiohttp (automatically installed)

License

MIT License - see LICENSE file for details.

Related Projects

• WebQuiz - The quiz server this tool is designed to test

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

Support

For issues or questions:

• Check existing GitHub Issues
• Create a new issue with details about your problem
• Include server version, stress test version, and command used