Module tui_load 

TUI Load Testing (Framework-Agnostic Performance Testing)

Test TUI performance with large datasets, hang detection, and frame timing. Works with any TUI framework (presentar-terminal, crossterm, etc.). TUI Load Testing Module

Framework-agnostic load testing for terminal user interfaces. Works with any TUI framework (presentar-terminal, crossterm, etc.).

Key Features

• Framework Agnostic: Uses callbacks/closures, not tied to any TUI library
• Data Generation: Generate realistic data volumes (1000+ items)
• Frame Timing: Measure render time per frame
• Hang Detection: Timeout-based hang detection with detailed diagnostics
• Filter/Search Testing: Test filter performance with large datasets

Toyota Way Application

• Jidoka: Automatic hang detection stops tests before infinite loops
• Muda: Eliminate wasted time from slow filter implementations
• Genchi Genbutsu: Measure actual render times, not theoretical

Example

use jugar_probar::tui_load::{TuiLoadTest, DataGenerator, TuiFrameMetrics};

// Create load test with 5000 synthetic processes
let mut load_test = TuiLoadTest::new()
    .with_item_count(5000)
    .with_frame_budget_ms(16)  // 60 FPS target
    .with_timeout_ms(1000);     // 1 second hang detection

// Run test with your render function
let result = load_test.run(|items, filter| {
    // Your TUI render logic here
    // Returns frame time in microseconds
    render_process_list(items, filter)
});

assert!(result.is_ok(), "TUI should not hang");
assert!(result.unwrap().p95_frame_ms < 16.0, "Should maintain 60 FPS");

Structs

ComponentTimings

Component timing results from a frame render

DataGenerator

Data generator for synthetic load test data

IntegrationLoadTest

Integration load test that measures real application frame times.

SyntheticItem

A synthetic item for load testing (framework-agnostic)

TuiFrameMetrics

Metrics collected during TUI load testing

TuiLoadAssertion

Assertion helpers for TUI load test results

TuiLoadConfig

Configuration for TUI load testing

TuiLoadTest

TUI Load Test Runner

Enums

TuiLoadError

Errors that can occur during TUI load testing

Type Aliases

TuiLoadResult

Result type for TUI load tests