feat(test.Connectors): add test for stacked links

test/jointjs/connectors.js

@@ -354,4 +354,40 @@ QUnit.module('connectors', function(hooks) {
 
         assert.checkDataPath(pathData, 'M 335.31 300.31 C 384.148 328.507 435 343.607 435 400', 'curve link with rotate was correctly rendered');
     });
+
+    QUnit.test('jumpover connector - stacked links do not cause jumps', function(assert) {
+        const element1 = new joint.shapes.standard.Rectangle({
+            position: { x: 50, y: 50 },
+            size: { width: 50, height: 50 },
+        });
+
+        const element2 = element1.clone();
+        element2.position(50, 150);
+
+        const link1 = new joint.shapes.standard.Link({
+            source: { x: 25, y: 300 },
+            target: { id: element1.id },
+            connector: { name: 'jumpover' },
+            vertices: [
+                { x: 25, y: 75 }
+            ],
+        });
+
+        const link2 = new joint.shapes.standard.Link({
+            source: { x: 25, y: 300 },
+            target: { id: element2.id },
+            connector: { name: 'jumpover' },
+            vertices: [
+                { x: 25, y: 175 }
+            ]
+        });
+
+        this.graph.addCells([element1, element2, link2, link1]);
+
+        const linkView = link1.findView(this.paper);
+        const pathData = linkView.metrics.data;
+
+        // The link consists of two straight lines - no jumps
+        assert.checkDataPath(pathData, 'M 25 300 L 25 75 L 50 75');
+    });
 });