Function expectColorClose

packages/codium/sources/theme/__tests__/derive.test.ts:45–57

(actual: string, expected: string, label: string)

const ALPHA_TOL = 0.04 // ±0.04 alpha — accommodates curve-fit residuals across themes

function expectColorClose(actual: string, expected: string, label: string) {
    const a = parseRgba(actual)
    const e = parseRgba(expected)
    if (!a || !e) {
        expect(actual, `${label}: unparseable`).toBe(expected)
        return
    }
    for (let i = 0; i < 3; i++) {
        const d = Math.abs(a.rgb[i] - e.rgb[i])
        expect(d, `${label}: channel ${i} ${a.rgb[i]} vs ${e.rgb[i]} (got=${actual} want=${expected})`).toBeLessThanOrEqual(HEX_TOL)
    }
    expect(Math.abs(a.a - e.a), `${label}: alpha ${a.a} vs ${e.a}`).toBeLessThanOrEqual(ALPHA_TOL)
}

/* ---------- tokens we cover ---------- */