dgbuilder/test/red/settings_spec.js

   1 /**
   2  * Copyright 2014 IBM Corp.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  **/
  16 var should = require("should");
  17 var when = require("when");
  18
  19 var settings = require("../../red/settings");
  20
  21
  22 describe("red/settings", function() {
  23
  24     afterEach(function() {
  25         settings.reset();
  26     });
  27
  28     it('wraps the user settings as read-only properties', function() {
  29         var userSettings = {
  30             a: 123,
  31             b: "test",
  32             c: [1,2,3]
  33         }
  34         settings.init(userSettings);
  35
  36         settings.available().should.be.false;
  37
  38         settings.a.should.equal(123);
  39         settings.b.should.equal("test");
  40         settings.c.should.be.an.Array.with.lengthOf(3);
  41
  42         settings.get("a").should.equal(123);
  43         settings.get("b").should.equal("test");
  44         settings.get("c").should.be.an.Array.with.lengthOf(3);
  45
  46         /*jshint immed: false */
  47         (function() {
  48             settings.a = 456;
  49         }).should.throw();
  50
  51         settings.c.push(5);
  52         settings.c.should.be.an.Array.with.lengthOf(4);
  53
  54         /*jshint immed: false */
  55         (function() {
  56             settings.set("a",456);
  57         }).should.throw();
  58
  59         /*jshint immed: false */
  60         (function() {
  61             settings.set("a",456);
  62         }).should.throw();
  63
  64         /*jshint immed: false */
  65         (function() {
  66             settings.get("unknown");
  67         }).should.throw();
  68
  69         /*jshint immed: false */
  70         (function() {
  71             settings.set("unknown",456);
  72         }).should.throw();
  73
  74     });
  75
  76     it('loads global settings from storage', function(done) {
  77         var userSettings = {
  78             a: 123,
  79             b: "test",
  80             c: [1,2,3]
  81         }
  82         var savedSettings = null;
  83         var storage = {
  84             getSettings: function() {
  85                 return when.resolve({globalA:789});
  86             },
  87             saveSettings: function(settings) {
  88                 savedSettings = settings;
  89                 return when.resolve();
  90             }
  91         }
  92         settings.init(userSettings);
  93
  94         settings.available().should.be.false;
  95
  96         /*jshint immed: false */
  97         (function() {
  98             settings.get("unknown");
  99         }).should.throw();
 100
 101         settings.load(storage).then(function() {
 102             settings.available().should.be.true;
 103             settings.get("globalA").should.equal(789);
 104             settings.set("globalA","abc").then(function() {
 105                     savedSettings.globalA.should.equal("abc");
 106                     done();
 107             });
 108         }).otherwise(function(err) {
 109             done(err);
 110         });
 111
 112
 113     });
 114 });