Tunit

Running TUnit Tests

This project uses TUnit with Playwright for testing. Tests are located in tests/SummitUI.Tests.Playwright/.

Run All Tests

dotnet run --project tests/SummitUI.Tests.Playwright

Run Tests with Limited Parallelism (Recommended)

To prevent system overload when running Playwright tests, limit parallel test execution:

# Run with maximum 1 parallel test (sequential)
dotnet run --project tests/SummitUI.Tests.Playwright -- --maximum-parallel-tests 1

# Run with maximum 2 parallel tests
dotnet run --project tests/SummitUI.Tests.Playwright -- --maximum-parallel-tests 2

Run Tests with Filters

TUnit uses --treenode-filter with path pattern: /assembly/namespace/class/test

Filter by class name:

dotnet run --project SummitUI.Tests.Playwright -- --treenode-filter '/*/*/ClassName/*'

Filter by exact test name:

dotnet run --project SummitUI.Tests.Playwright -- --treenode-filter '/*/*/*/TestName'

Examples:

# Run all Select accessibility tests
dotnet run --project tests/SummitUI.Tests.Playwright -- --treenode-filter '/*/*/SelectAccessibilityTests/*'

# Run specific test by name
dotnet run --project tests/SummitUI.Tests.Playwright -- --treenode-filter '/*/*/*/Trigger_ShouldHave_RoleCombobox'

# Run tests matching pattern (wildcard in test name)
dotnet run --project tests/SummitUI.Tests.Playwright -- --treenode-filter '/*/*/*/Keyboard*'

# Run all tests in namespace
dotnet run --project tests/SummitUI.Tests.Playwright -- --treenode-filter '/*/SummitUI.Tests.Playwright/*/*'

Run Tests in Debug Mode

When a debugger is attached, Playwright will run in debug mode (PWDEBUG=1) automatically via the Hooks.cs setup.

View Test Output

Add --report flags for different output formats:

# Console output with details
dotnet run --project tests/SummitUI.Tests.Playwright -- --output-format console-detailed

# Generate TRX report
dotnet run --project tests/SummitUI.Tests.Playwright -- --report-trx

Flakiness Mitigation

The test project includes several features to reduce flakiness:

1. Automatic Retries: Tests are automatically retried up to 2 times on failure ([Retry(2)] in GlobalSetup.cs)
2. Fully Sequential Execution: All tests run sequentially via [assembly: NotInParallel] in GlobalSetup.cs
3. Server Readiness Check: Hooks.cs waits for the Blazor server to be fully ready before tests start
4. Extended Timeouts: Configured via tunit.json for longer test and hook timeouts

Project Structure

• GlobalSetup.cs - Assembly-level test configuration (retries, parallelism)
• Hooks.cs - Test session setup/teardown (starts Blazor server)
• BlazorWebApplicationFactory.cs - WebApplicationFactory for hosting the test server
• tunit.json - TUnit configuration file
• *AccessibilityTests.cs - Accessibility test classes inheriting from PageTest

Test Conventions

• Tests inherit from TUnit.Playwright.PageTest to get Page access
• Use [Before(Test)] for per-test setup
• Use [Before(TestSession)] / [After(TestSession)] for session-wide setup
• Access the running server via Hooks.ServerUrl