scala - 如何匹配抛出的异常消息？

Question

The specs2 Matchers guide状态:

throwA[ExceptionType](message = "boom") additionally checks if the exception message is as expected

但是当我使用它时，该消息显然与整个堆栈跟踪匹配，而不仅仅是异常消息。

测试

"cont'd what if -- running test again shows that the app has already died" in {
  running(new FakeApplication(additionalConfiguration = inLocalPostgresDatabase())) {
    db2 withSession {
      val comboboxOpsClass = new ComboboxOps(database)
    }
  } must throwA[SQLException](message = "Attempting to obtain a connection from a pool that has already been shutdown")
}

堆栈跟踪

[error]      'Attempting to obtain a connection from a pool that has already been shutdown. 
[error]      Stack trace of location where pool was shutdown follows:
[error]       java.lang.Thread.getStackTrace(Thread.java:1568)
[error]       com.jolbox.bonecp.BoneCP.captureStackTrace(BoneCP.java:572)
[error]       com.jolbox.bonecp.BoneCP.shutdown(BoneCP.java:161)

很多很多线

[error]       org.specs2.execute.ResultExecution$class.execute(ResultExecution.scala:22)
[error]       org.specs2.execute.ResultExecution$.execute(ResultExecution.scala:116)
[error]       org.specs2.specification.FragmentExecution$class.executeBody(FragmentExecution.scala:28)
[error]       
[error]       sbt.ForkMain$Run.runTestSafe(ForkMain.java:211)
[error]       sbt.ForkMain$Run.runTests(ForkMain.java:187)
[error]       sbt.ForkMain$Run.run(ForkMain.java:251)
[error]       sbt.ForkMain.main(ForkMain.java:97)
[error]      ' doesn't match '.*Attempting to obtain a connection from a pool that has already been shutdown.*' (FakeApplicationSpec.scala:138)

有人可以指出我使用 specs2 的一个工作示例吗？

Answer 1

我不想这么说，但我从来没有找到一种通用的方法来发现文本是什么，除了让它发生并在事后添加它......或者去异常的来源并从那里复制它。这是我在 Novus-JDBC 中所做的，第 91 行:

"handle when take more than it can give" in{
  val iter0 = nonCounter()

  val iter = iter0 slice (0,10)

  (iter next () must be greaterThan 0) and
  (iter next () must be greaterThan 0) and
  (iter next () must be equalTo -1) and
  (iter next () must be equalTo 3) and
    (iter.hasNext must beFalse) and
    (iter next() must throwA(new NoSuchElementException("next on empty iterator")))
}