Lift Framework example source code file (ControlHelpersSpec.scala)

This example Lift Framework source code file (ControlHelpersSpec.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lift Framework tags/keywords

controlhelpers, controlhelpersspec, empty, empty, failure, full, full, runtimeexception, specification, specification, throwable, throwable

The Lift Framework ControlHelpersSpec.scala source code

/*
 * Copyright 2006-2011 WorldWide Conferencing, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.liftweb
package util

import org.specs.Specification

import common._
import ControlHelpers._


/**
 * Systems under specification for ControlHelpers.
 */
object ControlHelpersSpec extends Specification("ControlHelpers Specification") {

  "the tryo function" should {
    "return a Full can if the tested block doesn't throw an exception" in {
      tryo { "valid" } must_== Full("valid")
    }
    val exception = new RuntimeException("ko")
    def failureBlock = { throw exception; () }

    "return a Failure if the tested block throws an exception" in {
      tryo { failureBlock } must_== Failure(exception.getMessage, Full(exception), Empty)
    }
    "return Empty if the tested block throws an exception whose class is in the ignore list - with one element" in {
      tryo(classOf[RuntimeException]) { failureBlock } must_== Empty
    }
    "return Empty if the tested block throws an exception whose class is in the ignore list - with 2 elements" in {
      tryo(List(classOf[RuntimeException], classOf[NullPointerException])) { failureBlock } must_== Empty
    }
    "trigger a callback function with the exception if the tested block throws an exception" in {
      val callback = (e: Throwable) => { e must_== exception; () }
      tryo(callback) { failureBlock }
    }
    "trigger a callback function with the exception if the tested block throws an exception even if it is ignored" in {
      val callback = (e: Throwable) => { e must_== exception; () }
      tryo(List(classOf[RuntimeException]), Full(callback)) { failureBlock }
    }
    "don't trigger a callback if the tested block doesn't throw an exception" in {
      val callback = (e: Throwable) => { fail("must not be called") }
      tryo(callback) { "valid" }
    }
    "don't trigger a callback if the tested block doesn't throw an exception, even with an ignore list" in {
      val callback = (e: Throwable) => { fail("must not be called") }
      tryo(List(classOf[RuntimeException]), Full(callback)) { "valid" }
    }
  }
}