test(modeling): verify tooltip shown on failed create

test/spec/features/modeling/behavior/ModelingFeedback.bpmn

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="sid-38422fae-e03e-43a3-bef4-bd33b32041b2" targetNamespace="http://bpmn.io/bpmn" exporter="bpmn-js" exporterVersion="7.3.0">
+  <collaboration id="Collaboration_1">
+    <participant name="Participant_1" id="Participant_1" processRef="Process_1" />
+  </collaboration>
+  <process id="Process_1" />
+  <bpmndi:BPMNDiagram id="BpmnDiagram_1">
+    <bpmndi:BPMNPlane id="BpmnPlane_1" bpmnElement="Collaboration_1">
+      <bpmndi:BPMNShape id="Participant_1_di" bpmnElement="Participant_1" isHorizontal="true">
+        <omgdc:Bounds x="160" y="80" width="420" height="180" />
+      </bpmndi:BPMNShape>
+    </bpmndi:BPMNPlane>
+  </bpmndi:BPMNDiagram>
+</definitions>

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

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+import {
+  bootstrapModeler,
+  getBpmnJS,
+  inject
+} from 'test/TestHelper';
+
+import {
+  createCanvasEvent as canvasEvent
+} from 'test/util/MockEvents';
+
+import coreModule from 'lib/core';
+import modelingModule from 'lib/features/modeling';
+
+
+describe('features/modeling - ModelingFeedback', function() {
+
+  var collaborationDiagramXML = require('./ModelingFeedback.bpmn');
+
+  beforeEach(bootstrapModeler(collaborationDiagramXML, {
+    modules: [
+      coreModule,
+      modelingModule
+    ]
+  }));
+
+
+  it('should indicate', inject(function(create, canvas, elementFactory, dragging) {
+
+    // given
+    var task = elementFactory.createShape({ type: 'bpmn:Task' });
+
+    var collaboration = canvas.getRootElement();
+    var collaborationGfx = canvas.getGraphics(collaboration);
+
+    create.start(canvasEvent({ x: 100, y: 100 }), task);
+    dragging.hover({ element: collaboration, gfx: collaborationGfx });
+
+    // when
+    dragging.end();
+
+    // then
+    expectTooltip('error', 'flow elements must be children of pools/participants');
+  }));
+
+});
+
+
+function expectTooltip(cls, message) {
+
+  return getBpmnJS().invoke(function(canvas) {
+
+    var tooltipEl = document.querySelector('[data-tooltip-id]', canvas.getContainer());
+
+    expect(tooltipEl.textContent).to.eql(message);
+    expect(tooltipEl.classList.contains(cls));
+  });
+}