Lift Framework example source code file (DiffExamples.scala)

This example Lift Framework source code file (DiffExamples.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

diff, diff, diffexamples, example, examples, jnothing, jnothing, lotto, mergeexamples, mergeexamples, specification, specification, string

The Lift Framework DiffExamples.scala source code

/*
 * Copyright 2009-2011 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 json

import org.specs.Specification


/**
 * System under specification for Diff Examples.
 */
object DiffExamples extends Specification("Diff Examples") {
  import MergeExamples.{scala1, scala2, lotto1, lotto2, mergedLottoResult}

  "Diff example" in {
    val Diff(changed, added, deleted) = scala1 diff scala2
    changed mustEqual expectedChanges
    added mustEqual expectedAdditions
    deleted mustEqual expectedDeletions
  }

  val expectedChanges = parse("""
    {
      "tags": ["static-typing","fp"],
      "features": {
        "key2":"newval2"
      }
    }""")

  val expectedAdditions = parse("""
    {
      "features": {
        "key3":"val3"
      },
      "compiled": true
    }""")

  val expectedDeletions = parse("""
    {
      "year":2006,
      "features":{ "key1":"val1" }
    }""")

  "Lotto example" in {
    val Diff(changed, added, deleted) = mergedLottoResult diff lotto1
    changed mustEqual JNothing
    added mustEqual JNothing
    deleted mustEqual lotto2
  }

  "Example from http://tlrobinson.net/projects/js/jsondiff/" in {
    val json1 = read("/diff-example-json1.json")
    val json2 = read("/diff-example-json2.json")
    val expectedChanges = read("/diff-example-expected-changes.json")
    val expectedAdditions = read("/diff-example-expected-additions.json")
    val expectedDeletions = read("/diff-example-expected-deletions.json")

    json1 diff json2 mustEqual Diff(expectedChanges, expectedAdditions, expectedDeletions)
  }

  private def read(resource: String) =
    parse(scala.io.Source.fromInputStream(getClass.getResourceAsStream(resource)).getLines().mkString)
}