react-native-pathjs-charts/src/__tests__/pie/PieBasic-test.js

Cross platform React Native charting library based on path-js and react-native-svg

/*
Copyright 2016 Capital One Services, LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and limitations under the License.

SPDX-Copyright: Copyright (c) Capital One Services, LLC
SPDX-License-Identifier: Apache-2.0
*/
import 'react-native'
import React from 'react'
import Pie from '../../Pie'
import renderer from 'react-test-renderer'
import { diffJson } from 'diff'

let data = [{
  "name": "Washington",
  "population": 7694980
}, {
  "name": "Oregon",
  "population": 2584160
}, {
  "name": "Minnesota",
  "population": 6590667,
  "color": {'r':223,'g':154,'b':20}
}, {
  "name": "Alaska",
  "population": 7284698
}]

let options = {
  margin: {
    top: 20,
    left: 20,
    right: 20,
    bottom: 20
  },
  width: 350,
  height: 350,
  color: '#2980B9',
  r: 50,
  R: 150,
  legendPosition: 'topLeft',
  animate: {
    type: 'oneByOne',
    duration: 200,
    fillTransition: 3
  },
  label: {
    fontFamily: 'Arial',
    fontSize: 8,
    fontWeight: true,
    color: '#ECF0F1'
  }
}

it('renders using options property correctly', () => {
  let tree = renderer.create(
    <Pie data={data}
      options={options}/>
  ).toJSON()
  expect(tree).toMatchSnapshot()
})

it('renders using flattened properties correctly', () => {
  let tree = renderer.create(
    <Pie data={data}
      options={options}
      r={10} />
  ).toJSON()
  expect(tree).toMatchSnapshot()
})

it('contains expected diff between flattened vs non-flattened option usage', () => {
  let treeUsingOptionsProp = renderer.create(
    <Pie data={data}
      options={options}/>
  ).toJSON()

  let treeUsingFlattenedProps = renderer.create(
    <Pie data={data}
      options={options}
    r={10}/>
  ).toJSON()

  let jsonDiff = diffJson(treeUsingOptionsProp, treeUsingFlattenedProps)

  const expectedRemoveCount = 4
  const expectedAddCount = 4
  var actualRemoveCount = 0
  var actualAddCount = 0

  jsonDiff.forEach((part) => {
    if (part.removed && part.value.trim()
          === '"d": "M NaN NaN A 150 150 0 0 1 NaN NaN L NaN NaN A 50 50 0 0 0 NaN NaN Z ",') {
      actualRemoveCount++
    }
    if (part.added && part.value.trim()
          === '"d": "M NaN NaN A 150 150 0 0 1 NaN NaN L NaN NaN A 10 10 0 0 0 NaN NaN Z ",') {
      actualAddCount++
    }
  })
  expect(actualRemoveCount).toBe(expectedRemoveCount)
  expect(actualAddCount).toBe(expectedAddCount)

})

it('renders with 1 data item correctly', () => {
  let data = [{"name": "Washington", "population": 7694980}]
  let tree = renderer.create(
    <Pie data={data}
      options={options}/>
  ).toJSON()
  expect(tree).toMatchSnapshot()
})