jest.setup.js

// Mock HTMLCanvasElement.getContext to suppress jsdom warnings

const mockContext = {
    clearRect: jest.fn(),
    fillRect: jest.fn(),
    beginPath: jest.fn(),
    moveTo: jest.fn(),
    lineTo: jest.fn(),
    stroke: jest.fn(),
    fill: jest.fn(),
    closePath: jest.fn(),
    ellipse: jest.fn(),
    arc: jest.fn(),
    drawImage: jest.fn(),
    measureText: jest.fn(() => ({
        width: 0,
        actualBoundingBoxAscent: 0,
        actualBoundingBoxDescent: 0,
    })),
    scale: jest.fn(),
    setTransform: jest.fn(),
    save: jest.fn(),
    restore: jest.fn(),
};

Object.defineProperty(HTMLCanvasElement.prototype, 'getContext', {
    configurable: true,
    writable: true,
    value: jest.fn((type) => {
        // Return null for non-2d contexts
        if (type !== '2d') return null;

        return mockContext;
    }),
});