tests: add tests for useNodesData

Author: bcakmakoglu

tests/cypress/component/4-composables/useNodesData.cy.ts

@@ -0,0 +1,92 @@
+import type { Node } from '@vue-flow/core'
+import { useNodesData } from '@vue-flow/core'
+import { defineComponent, h } from 'vue'
+import { getElements } from '../../utils'
+
+const { nodes } = getElements()
+
+describe('Composable: `useNodesData`', () => {
+  describe('returns node data for a single node', () => {
+    let data: any = null
+
+    const node = nodes[0]
+
+    beforeEach(() => {
+      cy.vueFlow(
+        {
+          nodes: nodes.map((node) => ({ ...node, type: 'custom' })),
+        },
+        {},
+        {
+          'node-custom': defineComponent({
+            setup() {
+              data = useNodesData(nodes[0].id)
+
+              return () => h('div', 'Custom Node')
+            },
+          }),
+        },
+      )
+    })
+
+    it('should return the node data', () => {
+      expect(data.value).to.deep.equal(node.data)
+    })
+  })
+
+  describe('returns node data for multiple nodes', () => {
+    let data: any = null
+
+    const nodeIds = nodes.map((node) => node.id)
+
+    beforeEach(() => {
+      cy.vueFlow(
+        {
+          nodes: nodes.map((node) => ({ ...node, type: 'custom' })),
+        },
+        {},
+        {
+          'node-custom': defineComponent({
+            setup() {
+              data = useNodesData(nodeIds)
+
+              return () => h('div', 'Custom Node')
+            },
+          }),
+        },
+      )
+    })
+
+    it('should return the node data', () => {
+      expect(data.value).to.deep.equal(nodes.map((node) => node.data))
+    })
+  })
+
+  describe('returns node data for multiple nodes with a guard', () => {
+    let data: any = null
+
+    const nodeIds = nodes.map((node) => node.id)
+
+    beforeEach(() => {
+      cy.vueFlow(
+        {
+          nodes: nodes.map((node) => ({ ...node, type: 'custom' })),
+        },
+        {},
+        {
+          'node-custom': defineComponent({
+            setup() {
+              data = useNodesData(nodeIds, (node): node is Node<{ randomData: number }> => node.type === 'custom')
+
+              return () => h('div', 'Custom Node')
+            },
+          }),
+        },
+      )
+    })
+
+    it('should return the node data', () => {
+      expect(data.value).to.deep.equal(nodes.map((node) => node.data))
+    })
+  })
+})