Struct TestBuffer 

pub struct TestBuffer { /* private fields */ }

In-memory buffer for unit testing drawing operations.

TestBuffer provides a simple 8×8 pixel array that implements PixelBuffer, allowing drawing primitives to be tested without hardware access.

Example

use unicorn_hat::{RGB8, buffer::{PixelBuffer, TestBuffer}};

let mut buf = TestBuffer::new();
buf.set_pixel(0, 0, RGB8::RED).unwrap();
assert_eq!(buf.get_pixel(0, 0).unwrap(), RGB8::RED);

Implementations

impl TestBuffer

pub fn new() -> Self

Create a new buffer filled with black pixels.

pub fn with_color(color: RGB8) -> Self

Create a buffer filled with a specific color.

pub fn fill(&mut self, color: RGB8)

Fill the entire buffer with a color.

pub fn get_all(&self) -> &[[RGB8; 8]; 8]

Get all pixels as a 2D array reference.

pub fn set_all(&mut self, pixels: [[RGB8; 8]; 8])

Set all pixels from a 2D array.

Trait Implementations

impl Clone for TestBuffer

fn clone(&self) -> TestBuffer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TestBuffer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TestBuffer

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for TestBuffer

fn eq(&self, other: &TestBuffer) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PixelBuffer for TestBuffer

fn set_pixel(&mut self, x: usize, y: usize, color: RGB8) -> Result<(), Error>

Set a pixel at the given coordinates.

fn get_pixel(&self, x: usize, y: usize) -> Result<RGB8, Error>

Get the color of a pixel at the given coordinates.

fn width(&self) -> usize

Get the width of the buffer (always 8 for Unicorn HAT).

fn height(&self) -> usize

Get the height of the buffer (always 8 for Unicorn HAT).

impl StructuralPartialEq for TestBuffer