compiler-errors - Specs2结果与MatchResult

Question

我正在迁移到Specs2 2。

这个用来编译

if(foo) {
    bar mustBe equalTo(1)
} else {
    skipped("foo was false")
}

但不再

could not find implicit value for evidence parameter of type org.specs2.execute.AsResult[Object]

我该怎么办？

版本2.3.13

Answer 1

第一行返回Matcher[T]，第二行返回Result。这两种类型统一为Object，这就是为什么您会收到这样的编译消息的原因。

要解决此问题，您可以使用以下帮助器功能:

def skipWhen[R : AsResult](condition: Boolean, message)(r: =>R): Result = 
  if (condition) skipped(message)
  else           AsResult(r) 

"my example" >> skipWhen(serverIsDown, "server is down") {
  1 must_== 1
}

还有其他方法可以跳过User Guide中描述的示例:

"my example is skipped" >> skipped {
  sys.error("boom")
  ok
}

"this will skip if the expectation is false" >> {
   1 must beEqualTo(2).orSkip
}

"this will succeed if the condition is false" >> {
   1 must beEqualTo(2).unless(condition)
}

// this will skip all the examples in the specification if the condition is true
skipAllIf(condition)