【关键词】

单元测试框架、HarmonyOS Test、assertThrowError、assertFail、assertEqual

【测试代码及测试结果展示】
这里以新建API9工程自动生成的ohosTest来编写单元测试代码。

1、  测试代码：

import { describe, it, expect } from '@ohos/hypium'
import abilityDelegatorRegistry from '@ohos.application.abilityDelegatorRegistry';

class CharacterReader {
  constructor() {
  }
  unconsume(){
    throw new Error("this is an error")
  }
  unconsume1(a: number,b: number){
    if (a == 1 && b == 2) {
      throw new Error("this is an error")
    }
  }
  add(a: number,b: number) {
    return a + b
  }
}

export default function abilityTest() {
  describe('ActsAbilityTest', function () {
    // 验证待验证方法的行为时，不带括号
    it('assertThrowError',0,() => {
      let reader = new CharacterReader()
      expect(reader.unconsume).assertThrowError("this is an error")
    })
    // expect验证行为不能带括号，目前想要传递参数就另行封装一个空参方法，再转而测试这个空参方法，如下
    it('assertThrowError', 0, () => {
      let reader = new CharacterReader();
      let a = 1;
      let b = 2;
      const test:Function = () => {
        reader.unconsume1(a,b)
      }
      expect(test).assertThrowError("this is an error")
    })

    // 验证待验证方法的行为时，带括号
    it('assertEqual',0,() => {
      let reader = new CharacterReader()
      expect(reader.add(1,1)).assertEqual(2)
    })

    // assertFail断言，使一个用例强制失败
    it('assertFail',0,() => {
      let reader = new CharacterReader()
      expect(reader.unconsume).assertFail()
    })
  })
}

2、  测试结果

​

【参考文档】
1、https://developer.harmonyos.com/cn/docs/documentation/doc-guides/harmonyos_jnit_jsunit-0000001092459608

2、https://developer.harmonyos.com/cn/docs/documentation/doc-guides-V3/unit-test-0000001507402510-V3#section160718461418