import { expect, test } from "vitest"

import { clone, partition, signal } from "#Source/reactor/index.ts"

test("clone operator should work correctly", () => {
  const source = signal(() => 1)
  const cloned = clone({ target: source })
  expect(cloned.get()).toBe(1)

  source.set(2)
  expect(cloned.get()).toBe(2)

  source.set(3)
  expect(cloned.get()).toBe(3)
})

test("partition operator should work correctly", () => {
  const source = signal(() => 1)
  const [even, odd] = partition({ target: source, predicate: (value) => value % 2 === 0 })

  expect(even.get()).toBe(undefined)
  expect(odd.get()).toBe(1)

  source.set(2)
  expect(even.get()).toBe(2)
  expect(odd.get()).toBe(1)

  source.set(3)
  expect(even.get()).toBe(2)
  expect(odd.get()).toBe(3)
})