### Basic egui_kittest Usage Example

Source: https://crates.io/crates/egui_kittest

Demonstrates how to use Harness to interact with UI elements like checkboxes and perform basic assertions. Ensure the 'wgpu' and 'snapshot' features are enabled for snapshot testing.

```rust
use egui::accesskit::Toggled;
use egui_kittest::{Harness, kittest::{Queryable, NodeT}};

let mut checked = false;
let app = |ui: &mut egui::Ui| {
    ui.checkbox(&mut checked, "Check me!");
};

let mut harness = Harness::new_ui(app);

let checkbox = harness.get_by_label("Check me!");
assert_eq!(checkbox.accesskit_node().toggled(), Some(Toggled::False));
checkbox.click();

harness.run();

let checkbox = harness.get_by_label("Check me!");
assert_eq!(checkbox.accesskit_node().toggled(), Some(Toggled::True));

// Shrink the window size to the smallest size possible
harness.fit_contents();

// You can even render the ui and do image snapshot tests
#[cfg(all(feature = "wgpu", feature = "snapshot"))]
harness.snapshot("readme_example");

```

--------------------------------

### egui_kittest Configuration File Example

Source: https://crates.io/crates/egui_kittest

Shows the structure and default settings for a 'kittest.toml' configuration file. This file allows customization of test settings like output paths and thresholds for different operating systems.

```toml
# path to the snapshot directory
output_path = "tests/snapshots"

# default threshold for image comparison tests
threshold = 0.6

# default failed_pixel_count_threshold
failed_pixel_count_threshold = 0

[windows]
threshold = 0.6
failed_pixel_count_threshold = 0

[macos]
threshold = 0.6
failed_pixel_count_threshold = 0

[linux]
threshold = 0.6
failed_pixel_count_threshold = 0

```

--------------------------------

### Snapshot Testing .gitignore Example

Source: https://crates.io/crates/egui_kittest

Provides lines to add to your .gitignore file to exclude generated snapshot diff and new image files from version control. This is crucial for managing generated test artifacts.

```gitignore
**/tests/snapshots/**/*.diff.png
**/tests/snapshots/**/*.new.png

```

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