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node-red/test/red/runtime/settings_spec.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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.
**/
var should = require("should");
var when = require("when");
var settings = require("../../../red/runtime/settings");
describe("red/settings", function() {
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afterEach(function() {
settings.reset();
});
it('wraps the user settings as read-only properties', function() {
var userSettings = {
a: 123,
b: "test",
c: [1,2,3]
}
settings.init(userSettings);
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settings.available().should.be.false();
settings.a.should.equal(123);
settings.b.should.equal("test");
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settings.c.should.be.an.Array();
settings.c.should.have.lengthOf(3);
settings.get("a").should.equal(123);
settings.get("b").should.equal("test");
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settings.get("c").should.be.an.Array();
settings.get("c").should.have.lengthOf(3);
/*jshint immed: false */
(function() {
settings.a = 456;
}).should.throw();
settings.c.push(5);
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settings.c.should.be.an.Array();
settings.c.should.have.lengthOf(4);
/*jshint immed: false */
(function() {
settings.set("a",456);
}).should.throw();
/*jshint immed: false */
(function() {
settings.set("a",456);
}).should.throw();
/*jshint immed: false */
(function() {
settings.get("unknown");
}).should.throw();
/*jshint immed: false */
(function() {
settings.set("unknown",456);
}).should.throw();
});
it('loads global settings from storage', function(done) {
var userSettings = {
a: 123,
b: "test",
c: [1,2,3]
}
var savedSettings = null;
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var saveCount = 0;
var storage = {
getSettings: function() {
return when.resolve({globalA:789});
},
saveSettings: function(settings) {
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saveCount++;
savedSettings = settings;
return when.resolve();
}
}
settings.init(userSettings);
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settings.available().should.be.false();
/*jshint immed: false */
(function() {
settings.get("unknown");
}).should.throw();
settings.load(storage).then(function() {
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settings.available().should.be.true();
settings.get("globalA").should.equal(789);
settings.set("globalA","abc").then(function() {
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savedSettings.globalA.should.equal("abc");
saveCount.should.equal(1);
settings.set("globalA","abc").then(function() {
savedSettings.globalA.should.equal("abc");
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// setting to existing value should not trigger save
saveCount.should.equal(1);
done();
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});
});
}).otherwise(function(err) {
done(err);
});
});
it('removes persistent settings when reset', function() {
var userSettings = {
a: 123,
b: "test",
c: [1,2,3]
}
settings.init(userSettings);
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settings.available().should.be.false();
settings.should.have.property("a",123);
settings.should.have.property("b","test");
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settings.c.should.be.an.Array();
settings.c.should.have.lengthOf(3);
settings.reset();
settings.should.not.have.property("a");
settings.should.not.have.property("d");
settings.should.not.have.property("c");
});
});