fix(label-behavior): properly check for name property change

Related to camunda/camunda-modeler#824

lib/features/modeling/behavior/LabelBehavior.js

@@ -48,8 +48,8 @@ export default function LabelBehavior(
         element = context.element,
         properties = context.properties;
 
-    if (name in properties) {
+    if ('name' in properties) {
-      modeling.updateLabel(element, name);
+      modeling.updateLabel(element, properties.name);
     }
   });
 

test/fixtures/bpmn/features/modeling/behavior/label-behavior.bpmn

@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" id="Definitions_1" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="1.14.0">
+<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" id="Definitions_1" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="1.15.1">
   <bpmn:process id="Process_1" isExecutable="false">
     <bpmn:startEvent id="StartEvent_1" name="foo" />
     <bpmn:task id="Task_1" />
+    <bpmn:exclusiveGateway id="ExclusiveGateway_1" />
   </bpmn:process>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">
     <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">
@@ -15,6 +16,9 @@
       <bpmndi:BPMNShape id="Task_1_di" bpmnElement="Task_1">
         <dc:Bounds x="353" y="80" width="100" height="80" />
       </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="ExclusiveGateway_1gzwevj_di" bpmnElement="ExclusiveGateway_1" isMarkerVisible="true">
+        <dc:Bounds x="256" y="95" width="50" height="50" />
+      </bpmndi:BPMNShape>
     </bpmndi:BPMNPlane>
   </bpmndi:BPMNDiagram>
 </bpmn:definitions>

test/spec/features/modeling/behavior/LabelBehaviorSpec.js

@@ -1,3 +1,5 @@
+/* global sinon */
+
 import {
   bootstrapModeler,
   inject
@@ -17,6 +19,51 @@ describe('behavior - LabelBehavior', function() {
   beforeEach(bootstrapModeler(diagramXML, { modules: testModules }));
 
 
+  describe('updating name property', function() {
+
+    it('should update label', inject(function(elementRegistry, eventBus, modeling) {
+
+      // given
+      var startEvent = elementRegistry.get('StartEvent_1'),
+          spy = sinon.spy();
+
+      eventBus.once('commandStack.element.updateLabel.execute', spy);
+
+      // when
+      modeling.updateProperties(startEvent, {
+        name: 'bar'
+      });
+
+      // then
+      expect(startEvent.businessObject.name).to.equal('bar');
+      expect(spy).to.have.been.called;
+    }));
+
+
+    it('should create label', inject(function(elementRegistry, eventBus, modeling) {
+
+      // given
+      var startEvent = elementRegistry.get('ExclusiveGateway_1'),
+          spy = sinon.spy();
+
+      eventBus.once('commandStack.element.updateLabel.execute', spy);
+
+      // when
+      modeling.updateProperties(startEvent, {
+        name: 'foo'
+      });
+
+      // then
+      var labelShape = startEvent.label;
+
+      expect(labelShape).to.exist;
+      expect(startEvent.businessObject.name).to.equal('foo');
+      expect(spy).to.have.been.called;
+    }));
+
+  });
+
+
   describe('add label', function() {
 
     it('should add to sequence flow with name', inject(