feat(test): add update edge tests

e2e/cypress/component/2-flow/updateEdge.cy.ts

@@ -0,0 +1,73 @@
+import { useVueFlow } from '@braks/vue-flow'
+
+describe('Check if edges are updatable', () => {
+  const store = useVueFlow({ id: 'test' })
+  store.onEdgeUpdate((params) => store.updateEdge(params.edge, params.connection))
+
+  beforeEach(() => {
+    cy.vueFlow({
+      fitViewOnInit: false,
+      edgesUpdatable: true,
+      modelValue: [
+        {
+          id: '1',
+          label: 'Node 1',
+          position: { x: 0, y: 0 },
+        },
+        {
+          id: '2',
+          label: 'Node 2',
+          position: { x: 300, y: 300 },
+        },
+        {
+          id: '3',
+          label: 'Node 3',
+          position: { x: 300, y: 0 },
+        },
+        {
+          id: 'e1-2',
+          source: '1',
+          target: '2',
+        },
+      ],
+      autoConnect: true,
+    })
+  })
+
+  it('updates edge', () => {
+    cy.window().then((win) => {
+      const edgeAnchor = cy.get('.vue-flow__edgeupdater[data-type="target"]')
+      const targetTargetHandle = cy.get(`[data-nodeid="3"].target`)
+
+      targetTargetHandle.then((handle) => {
+        const target = handle[0]
+        const { x, y } = target.getBoundingClientRect()
+
+        edgeAnchor
+          .trigger('mousedown', {
+            which: 1,
+            force: true,
+            view: win,
+          })
+          .trigger('mousemove', {
+            clientX: x + 5,
+            clientY: y + 5,
+            force: true,
+          })
+          .trigger('mouseup', {
+            clientX: x + 5,
+            clientY: y + 5,
+            force: true,
+            view: win,
+          })
+
+        cy.wait(100).then(() => {
+          const storedEdges = store.edges.value
+          expect(storedEdges).to.have.length(1)
+          expect(storedEdges[0].target).to.equal('3')
+          expect(storedEdges[0].source).to.equal('1')
+        })
+      })
+    })
+  })
+})