import { initChart } from './c3-helper'

describe('c3 cache', function() {
  'use strict'

  var chart

  var args = {
    data: {
      columns: [
        ['data1', 30, 200, 100, 400, 150, 250],
        ['data2', 50, 20, 10, 40, 15, 25],
        ['data3', 150, 120, 110, 140, 115, 125]
      ]
    }
  }

  beforeEach(function(done) {
    chart = initChart(chart, args, done)
  })

  it('returns undefined for unknown values', function() {
    expect(chart.internal.getFromCache('undefined')).toBeUndefined()
  })

  it('returns cached value', function() {
    chart.internal.addToCache('cached', 1)

    expect(chart.internal.getFromCache('cached')).toEqual(1)

    chart.internal.addToCache('cached', { x: 1 })

    expect(chart.internal.getFromCache('cached')).toEqual({ x: 1 })
  })

  it('can clear cached values', function() {
    chart.internal.addToCache('cached', 1)

    expect(chart.internal.getFromCache('cached')).toEqual(1)

    chart.internal.resetCache()

    expect(chart.internal.getFromCache('cached')).toBeUndefined()
  })
})