level/test/channel.spec.js

import { expect, test } from 'vitest'
import { updateChannel, Channel, Reading } from '../src/core/channel.js'

test('channel - instantiate channel with readers correctly', () => {
    let now = Date.now()
    let mockTemp = 70
    let testReader = new Reading({
        onRead: () => mockTemp,
        unit: 'F',
        max: 100,
        min: 50,
    })
    let testChan = new Channel({ interval: 1, reader: testReader })

    // Test that the channel and channel.reader are working
    expect(testChan.lastUpdate - now < 10).toStrictEqual(true)
    expect(testChan.val).toStrictEqual(70)
    expect(testChan.unit).toStrictEqual('F')

    mockTemp = 101
    testChan = updateChannel(testChan)
    expect(testChan.lastUpdate > now).toStrictEqual(true)
    expect(testChan.val).toStrictEqual(101)
    expect(testChan.inRange).toStrictEqual(false)
    expect(testChan.aboveRange).toStrictEqual(true)
    expect(testChan.belowRange).toStrictEqual(false)

    mockTemp = 49
    testChan = updateChannel(testChan)
    now = Date.now()
    expect(testChan.lastUpdate == now).toStrictEqual(true)
    expect(testChan.inRange).toStrictEqual(false)
    expect(testChan.aboveRange).toStrictEqual(false)
    expect(testChan.belowRange).toStrictEqual(true)
})