@aptpod/data-viz-create-visual-parts-react/template/visual-parts-react/src/entrypoint/samples/time-series-text/utils.test.ts

template of npm project with typescript

import { arraySearchIndexLe, arraySearchIndexGe } from './utils'

/**
 * arraySearchIndexLe のテスト
 */
describe('arraySearchIndexLe', () => {
  type TestData = {
    args: {
      array: number[]
      searchElement: number
    }
    exp: number
  }

  const nums = [0, 1, 2, 3, 4, 5]
  const compiler = (a: number, b: number) => a - b

  const testDatas: TestData[] = [
    { args: { array: nums, searchElement: -1 }, exp: -1 },
    { args: { array: nums, searchElement: 0.5 }, exp: 0 },
    { args: { array: nums, searchElement: 2 }, exp: 2 },
    { args: { array: nums, searchElement: 4.5 }, exp: 4 },
    { args: { array: nums, searchElement: 10 }, exp: 5 },
  ]

  testDatas.forEach(({ args: { array, searchElement }, exp }) => {
    const arrayString = JSON.stringify(array)
    test(`returns ${exp} when array=${arrayString}, searchElement=${searchElement}`, () => {
      expect(arraySearchIndexLe(array, searchElement, compiler)).toBe(exp)
    })
  })
})

/**
 * arraySearchIndexGe のテスト
 */
describe('arraySearchIndexGe', () => {
  type TestData = {
    args: {
      array: number[]
      searchElement: number
    }
    exp: number
  }

  const nums = [0, 1, 2, 3, 4, 5]
  const compiler = (a: number, b: number) => a - b

  const testDatas: TestData[] = [
    { args: { array: nums, searchElement: -1 }, exp: 0 },
    { args: { array: nums, searchElement: 0.5 }, exp: 1 },
    { args: { array: nums, searchElement: 2 }, exp: 2 },
    { args: { array: nums, searchElement: 4.5 }, exp: 5 },
    { args: { array: nums, searchElement: 10 }, exp: -1 },
  ]

  testDatas.forEach(({ args: { array, searchElement }, exp }) => {
    const arrayString = JSON.stringify(array)
    test(`returns ${exp} when array=${arrayString}, searchElement=${searchElement}`, () => {
      expect(arraySearchIndexGe(array, searchElement, compiler)).toBe(exp)
    })
  })
})