cthuloid / webui / test / swatches.test.js

import test from 'brittle'
import { PALETTE, pushRecent, addSwatch, removeSwatch, sameColor } from '../static/swatches.js'

test('palette: named lighting colours, all valid 0..1', (t) => {
  t.ok(PALETTE.length >= 12)
  for (const p of PALETTE) {
    t.ok(p.name && [p.r, p.g, p.b].every((v) => v >= 0 && v <= 1), p.name)
    t.ok(Math.max(p.r, p.g, p.b) === 1, p.name + ' normalised to full drive')
  }
})

test('recent: newest first, no duplicates, capped at 8', (t) => {
  let r = []
  for (let i = 0; i < 10; i++) r = pushRecent(r, { r: i / 10, g: 0, b: 1 })
  t.is(r.length, 8)
  t.is(r[0].r, 0.9)
  r = pushRecent(r, { r: 0.5, g: 0, b: 1 })
  t.is(r[0].r, 0.5, 'reused colour moves to the front')
  t.is(r.filter((c) => sameColor(c, { r: 0.5, g: 0, b: 1 })).length, 1, 'not duplicated')
})

test('my swatches: add skips duplicates, remove by index', (t) => {
  let m = addSwatch([], { r: 1, g: 0, b: 0 })
  m = addSwatch(m, { r: 1, g: 0, b: 0 })
  t.is(m.length, 1)
  m = addSwatch(m, { r: 0, g: 1, b: 0 })
  t.alike(removeSwatch(m, 0), [{ r: 0, g: 1, b: 0 }])
})

test('colours within 1/255 count as the same', (t) => {
  t.ok(sameColor({ r: 1, g: 0.5, b: 0 }, { r: 1, g: 0.501, b: 0 }))
  t.absent(sameColor({ r: 1, g: 0.5, b: 0 }, { r: 1, g: 0.52, b: 0 }))
})