add some more tests (and fixes for resulting bugs :-)

test/function/random/random_spec.js

@@ -0,0 +1,83 @@
+/**
+ * Copyright 2015 IBM Corp.
+ *
+ * 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 helper = require('../../../test/helper.js');
+var testNode = require('../../../function/random/random.js');
+
+describe('random node', function() {
+    "use strict";
+
+    beforeEach(function(done) {
+        helper.startServer(done);
+    });
+
+    afterEach(function(done) {
+        helper.unload().then(function() {
+            helper.stopServer(done);
+        });
+    });
+
+    it("should be loaded with correct defaults", function(done) {
+        var flow = [{"id":"n1", "type":"random", "name":"random1", "wires":[[]]}];
+        helper.load(testNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            n1.should.have.property("low", 1);
+            n1.should.have.property("high", 10);
+            n1.should.have.property("inte", false);
+            done();
+        });
+    });
+
+    it('should output an integer between -3 and 3', function(done) {
+        var flow = [{"id":"n1", "type":"random", low:3, high:3, inte:true, wires:[["n2"]] },
+            {id:"n2", type:"helper"} ];
+        helper.load(testNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            var n2 = helper.getNode("n2");
+            var c = 0;
+            n2.on("input", function(msg) {
+                if (c === 0) {
+                    msg.should.have.a.property("payload");
+                    msg.payload.should.be.approximately(0,3);
+                    msg.payload.toString().indexOf(".").should.equal(-1);
+                    done();
+                }
+            });
+            n1.emit("input", {payload:"a"});
+        });
+    });
+
+    it('should output an float between 20 and 30', function(done) {
+        var flow = [{"id":"n1", "type":"random", low:20, high:30, inte:false, wires:[["n2"]] },
+            {id:"n2", type:"helper"} ];
+        helper.load(testNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            var n2 = helper.getNode("n2");
+            var c = 0;
+            n2.on("input", function(msg) {
+                if (c === 0) {
+                    msg.should.have.a.property("payload");
+                    msg.payload.should.be.approximately(25,5);
+                    msg.payload.toString().indexOf(".").should.not.equal(-1);
+                    done();
+                }
+            });
+            n1.emit("input", {payload:"a"});
+        });
+    });
+
+});