Lift Framework example source code file (JsExpSpec.scala)

This example Lift Framework source code file (JsExpSpec.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

correctly, empty, full, full, jsarray, jsexp, jsexp, jsfunc, jsfunc, jsvar, list, none, none, specification

The Lift Framework JsExpSpec.scala source code

/*
 * Copyright 2010-2011 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 http
package js

import org.specs.Specification

import common._
import json._
import JsonDSL._
import util.Helpers._


/**
 * System under specification for JsExp.
 */
object JsExpSpec extends Specification("JsExp Specification") {
  "JsExp" should {
    "Deal with lift-json" in {
      val json = ("a" -> 4) ~ ("b" -> 44)

      JE.JsArray(json, "dog").toJsCmd must_== (
        """[{"a":4,"b":44}, "dog"]""" + "\n")

      
    }

    "Implicitly convert from Numeric types" in {
      import JsExp._

      (42:JsExp) must_== JE.Num(42)
      (42L:JsExp) must_== JE.Num(42L)
      (42.0:JsExp) must_== JE.Num(42.0)
      (42.0f:JsExp) must_== JE.Num(42.0f)
    }

    "Correctly infer type" in {
      val l:List[Option[Double]] = List(Some(1), None)

      import JsExp._ 

      // Can't get this to work:  JE.JsArray(l map {d => (d.getOrElse(0.0)):JsExp}) must_== JE.JsArray(1.0, 0.0)
      JE.JsArray(l map {d => (d.getOrElse(0.0):Double):JsExp}) must_== JE.JsArray(1.0, 0.0)
    }
  
  }

  "JsExp ~>" should {
    import JE._

    val js = JsVar("myVar")

    "handle Full parameters" in {
      val expected = (js ~> JsFunc("x") ~> JsFunc("y")).toJsCmd
      (js ~> Full(JsFunc("x")) ~> JsFunc("y")).toJsCmd must_== expected
      (js ~> Some(JsFunc("x")) ~> JsFunc("y")).toJsCmd must_== expected
    }

    "ignore Empty parameters" in {
      val expected = (js ~> JsFunc("x")).toJsCmd
      (js ~> Empty ~> JsFunc("x")).toJsCmd must_== expected
      (js ~> None ~> JsFunc("x")).toJsCmd must_== expected
    }
  }

  "JsArray" should {
    "work with varags" in {
      JE.JsArray(2, "x", 42.0).toJsCmd must_== "[2, \"x\", 42.0]\n"
    }
    
    "work with lists" in {
      val l:List[JsExp] = List(2, "x", 42.0)
      JE.JsArray(l).toJsCmd must_== "[2, \"x\", 42.0]\n"
    }
  }
}