我正在尝试在scala中使用Play框架进行单元测试。我写了一个类来检查配置是否正确(我有更多的错误处理,但我现在实际上将此代码用于我的测试):
class TaskQueueConfig(conf: Configuration) {
val schedulingEnabled = conf.getBoolean("schedulingEnabled").get
val processingEnabled = conf.getBoolean("processingEnabled").get
val queueName = conf.getString("queue").get
}
我正在使用play 2.1.1的默认测试设置对此进行测试:
class ConfigTestSpec extends Specification with Mockito with CalledMatchers {
"TaskQueueConfig" should {
"verify calls" in {
val tqConf = mock[Configuration]
tqConf.getString("queue") returns Some("queueName")
tqConf.getBoolean("schedulingEnabled") returns Some(true)
tqConf.getBoolean("processingEnabled") returns Some(true)
Logger.error("setup done")
val config = new TaskQueueConfig(tqConf)
there was one(tqConf).getString("queue")
there were two(tqConf).getBoolean(any[String])
there were one(tqConf).getBoolean("schedulingEnabled")
there were one(tqConf).getBoolean("processingEnabled")
}
}
}
我收到以下错误:
[error] x verify calls
[error] The mock was not called as expected:
[error] configuration.getString$default$2();
[error] Wanted 1 time:
[error] -> at config.ConfigTestSpec$$anonfun$2$$anonfun$apply$4$$anonfun$apply$12.apply(ConfigTestSpec.scala:61)
[error] But was 2 times. Undesired invocation:
[error] -> at config.TaskQueueConfig.<init>(TaskQueueConfig.scala:10) (ConfigTestSpec.scala:61)
这很奇怪,因为代码非常隔离,在 TaskQueueConfig 中显然只有 1 个 conf.getString 调用。第 10 行是带有 getString 方法的行。第 61 行是带有"有一个(tQConf).getString"的行
如何解决此问题?
(曾经和曾经之间没有区别)。
PS:我知道这个例子对测试毫无用处,但我有更复杂的配置,其中有一些规则需要测试。
更新 1getString 方法有两个参数,第二个参数的默认值为 None(其类型为 Option[Set[String]])。当我明确将 None 添加到设置和验证中时,它仍然不起作用。但是当我添加null
时,我会让它工作。
val tqConf = mock[Configuration]
tqConf.getString("queue", null) returns Some("queueName")
tqConf.getBoolean("schedulingEnabled") returns Some(true)
tqConf.getBoolean("processingEnabled") returns Some(true)
val c = new TaskQueueConfig(tqConf)
there was one(tqConf).getString("queue", null)
there was one(tqConf).getString(any[String], any[Option[Set[String]]])
there were two(tqConf).getBoolean(any[String])
there was one(tqConf).getBoolean("schedulingEnabled")
there was one(tqConf).getBoolean("processingEnabled")
c.processingEnabled must beTrue
c.schedulingEnabled must beTrue
c.queueName must be("queueName")
所以我想现在的问题是,为什么我必须使用 null?
在双参数getString()
调用中使用null
,因为 Mockito 要求您对所有参数使用匹配器或根本不使用匹配器。
因此,将"queue"
(文字)与any[Option[Set[String]]]
(匹配器)混合是行不通的。有时Mockito可以计算出你已经这样做了,它给了你一个错误,但看起来你在这里很不走运......
尝试在所有位置使用匹配器,如下所示:
tqConf.getString(org.mockito.Matchers.eq("queue"), any[Option[Set[String]]]) returns Some("queueName")
并验证:
there was one(tqConf).getString(eq("queue"), any[Option[Set[String]]])