test(ResizeShape): add test coverage

* Restructure tests to make them more clear
* Add tests for businessObject updates (especially groups)

test/fixtures/bpmn/simple-resizable.bpmn

@@ -13,6 +13,7 @@
       <bpmn:incoming>SequenceFlow_2</bpmn:incoming>
     </bpmn:endEvent>
     <bpmn:sequenceFlow id="SequenceFlow_2" sourceRef="SubProcess_1" targetRef="EndEvent_1" />
+    <bpmn:group id="Group_1" />
   </bpmn:process>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">
     <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">
@@ -45,6 +46,9 @@
           <dc:Bounds x="710" y="232" width="90" height="20" />
         </bpmndi:BPMNLabel>
       </bpmndi:BPMNEdge>
+      <bpmndi:BPMNShape id="Group_1_di" bpmnElement="Group_1">
+        <dc:Bounds x="264" y="42" width="500" height="400" />
+      </bpmndi:BPMNShape>
     </bpmndi:BPMNPlane>
   </bpmndi:BPMNDiagram>
 </bpmn:definitions>

test/spec/features/modeling/ResizeShapeSpec.js

@@ -3,6 +3,10 @@ import {
   inject
 } from 'test/TestHelper';
 
+import {
+  getBusinessObject
+} from 'lib/util/ModelUtil';
+
 import modelingModule from 'lib/features/modeling';
 import coreModule from 'lib/core';
 
@@ -18,6 +22,55 @@ describe('features/modeling - resize shape', function() {
 
   describe('shape', function() {
 
+    it('should resize', inject(function(elementRegistry, modeling) {
+
+      // given
+      var subProcessElement = elementRegistry.get('SubProcess_1'),
+          originalWidth = subProcessElement.width;
+
+      // when
+      modeling.resizeShape(subProcessElement, { x: 339, y: 142, width: 250, height: 200 });
+
+      // then
+      expect(subProcessElement.width).to.equal(250);
+      expect(subProcessElement.width).to.not.equal(originalWidth);
+
+    }));
+
+
+    describe('businessObject', function() {
+
+      it('should update bounds', inject(function(elementRegistry, modeling) {
+
+        // given
+        var subProcessElement = elementRegistry.get('SubProcess_1');
+
+        // when
+        modeling.resizeShape(subProcessElement, { x: 339, y: 142, width: 250, height: 200 });
+
+        // then
+        var bo = getBusinessObject(subProcessElement);
+        expect(bo.di.bounds.width).to.equal(250);
+      }));
+
+
+      it('should update group bounds', inject(function(elementRegistry, modeling) {
+
+        // given
+        var subProcessElement = elementRegistry.get('Group_1');
+
+        // when
+        modeling.resizeShape(subProcessElement, { x: 250, y: 250, width: 550, height: 400 });
+
+        // then
+        var bo = getBusinessObject(subProcessElement);
+        expect(bo.di.bounds.width).to.equal(550);
+      }));
+
+    });
+
+
+    describe('connected flow', function() {
 
       it('should resize', inject(function(elementRegistry, modeling, bpmnFactory) {
 
@@ -69,3 +122,5 @@ describe('features/modeling - resize shape', function() {
     });
 
   });
+
+});