headless

Headless test backend using the Rust renderer with software rendering.

Spawns plushie --headless as a Port and communicates via the negotiated wire format (msgpack by default, json opt-in). Provides structural tree snapshots and real widget rendering for regression testing. No display server required.

Limitations

No real windows or GPU rendering (use windowed for that).
Effects (file dialogs, clipboard) return cancelled.
Subscriptions are tracked but not fired (no event loop).

Types

HeadlessOpts

</>

Options for the headless backend.

pub type HeadlessOpts {
  HeadlessOpts(
    format: protocol.Format,
    renderer_path: option.Option(String),
  )
}

Constructors

```
HeadlessOpts(
  format: protocol.Format,
  renderer_path: option.Option(String),
)
```
Arguments

format

Wire format. Default: Msgpack.

renderer_path

Path to the plushie binary. None = auto-resolve.

Values

backend

</>

pub fn backend() -> backend.TestBackend(model)

Create a headless test backend with default options.

backend_with_opts

</>

pub fn backend_with_opts(
  opts: HeadlessOpts,
) -> backend.TestBackend(model)

Create a headless test backend with custom options.

default_opts

</>

pub fn default_opts() -> HeadlessOpts

Default headless options.