如何为以下常规代码编写测试用例？答案

【问题标题】：how to write an test case for below groovy code?如何为以下常规代码编写测试用例？
【发布时间】：2023-01-10 23:17:59
【问题描述】：

def withLocal(Closure cl) {

    def credentialsId = env.CREDENTIALS_ID

    if (credentialsId) {

        echo("credentials Id=${credentialsId}")

    } else {

        throw new Exception("credentials not setup - env.CREDENTIALS_ID")
    }
}

上面常规代码的 shouldFail 和 ShouldPass 测试用例除外。

【问题讨论】：

标签： unit-testing groovy

【解决方案1】：

根据测试框架的不同，代码可能会略有不同，但我会这样说：

class A {
  def withLocal(Closure cl) {
    def credentialsId = env.CREDENTIALS_ID
    if (credentialsId) {
        echo("credentials Id=${credentialsId}")
    } else {
        throw new Exception("credentials not setup - env.CREDENTIALS_ID")
    }
  }
}

// Test

// test 1 should pass: check if echo is called
// mock env with some value
A.metaClass.env = [ CREDENTIALS_ID:'abz123' ]
String out
// mock echo()
A.metaClass.echo = { out = it }

A a = new A()
a.withLocal{}
assert out == 'credentials Id=abz123'


// test 2 should fail: check if exception thrown
// mock env with empty map
A.metaClass.env = [:]

a = new A()
try{
  a.withLocal{}
}catch( e ){
  assert e.message == 'credentials not setup - env.CREDENTIALS_ID'
}

【讨论】：