import assert from 'node:assert/strict'
import test from 'node:test'

import { ServerConsoleBuffer } from './server-console-buffer.ts'

test('bounds buffered console output without rescanning prior chunks', () => {
	const buffer = new ServerConsoleBuffer(5)
	buffer.push(Uint8Array.from([1, 2]))
	buffer.push(Uint8Array.from([3, 4]))
	buffer.push(Uint8Array.from([5, 6]))

	assert.equal(buffer.size, 4)
	assert.deepEqual(
		[...buffer.values()].map((chunk) => [...chunk]),
		[
			[3, 4],
			[5, 6],
		],
	)
})

test('keeps only the tail of a chunk larger than the capacity', () => {
	const buffer = new ServerConsoleBuffer(3)
	buffer.push(Uint8Array.from([1, 2, 3, 4, 5]))

	assert.equal(buffer.size, 3)
	assert.deepEqual(
		[...buffer.values()].map((chunk) => [...chunk]),
		[[3, 4, 5]],
	)
})