Crate floem_test 

Testing utilities for Floem UI applications.

This crate provides a headless harness for testing Floem views without creating an actual window.

Example

use floem_test::prelude::*;

#[test]
fn test_button_click() {
    let tracker = ClickTracker::new();

    let view = tracker.track(
        Empty::new().style(|s| s.size(100.0, 100.0))
    );

    let mut harness = HeadlessHarness::new_with_size(view, 100.0, 100.0);
    harness.click(50.0, 50.0);

    assert!(tracker.was_clicked());
}

Testing Z-Index / Layered Views

use floem_test::prelude::*;

#[test]
fn test_z_index_click_order() {
    let tracker = ClickTracker::new();

    // Create overlapping views with different z-indices
    let view = layers((
        tracker.track_named("back", Empty::new().z_index(1)),
        tracker.track_named("front", Empty::new().z_index(10)),
    ));

    let mut harness = HeadlessHarness::new_with_size(view, 100.0, 100.0);
    harness.click(50.0, 50.0);

    // Front (z-index 10) should receive the click
    assert_eq!(tracker.clicked_names(), vec!["front"]);
}

Modules

prelude

Prelude module for convenient imports in tests.

Structs

ClickTracker

Tracks click events on views for testing.

EventResult

Result of an event dispatch operation.

HeadlessHarness

A headless harness for UI testing and benchmarking.

Point

Tracks scroll events on Scroll views for testing.

PointerCaptureTracker

Tracks pointer capture events on views for testing.

Rect

Tracks scroll events on Scroll views for testing.

ScrollTracker

TestRoot

A test root that owns a root ViewId and sets it as the current view.

ViewId

A small unique identifier, and handle, for an instance of a View.

Functions

layer

Create a single layer (absolute positioned view that fills its container).

layers

Create a stack of overlapping layers.