test: add test cases for isDeepRef

tests/isDeepRef.spec.ts

@@ -0,0 +1,70 @@
+import { isDeepRef } from '../src/utils/isDeepRef'
+import { describe, expect, it } from 'vitest'
+import { ref } from 'vue'
+
+describe('isDeepRef', () => {
+  it('should return true for a Ref value', () => {
+    const testRef = ref(1)
+
+    expect(isDeepRef(testRef)).toBe(true)
+  })
+  it('should return false for a non-object, non-Ref value', () => {
+    const nonObject = 1
+
+    expect(isDeepRef(nonObject)).toBe(false)
+  })
+  it('should return true for an object with a Ref value', () => {
+    const testObject = { ref: ref(1) }
+
+    expect(isDeepRef(testObject)).toBe(true)
+  })
+  it('should return false for an object without a Ref value', () => {
+    const testObject = { nonRef: 1 }
+
+    expect(isDeepRef(testObject)).toBe(false)
+  })
+  it('should return true for an array with a Ref value', () => {
+    const arrayWithRef = [ref(1)]
+
+    expect(isDeepRef(arrayWithRef)).toBe(true)
+  })
+  it('should return false for an array without a Ref value', () => {
+    const arrayWithoutRef = [1]
+
+    expect(isDeepRef(arrayWithoutRef)).toBe(false)
+  })
+  it('should return true for a nested object with a Ref value', () => {
+    const nestedObject = { nested: { ref: ref(1) } }
+
+    expect(isDeepRef(nestedObject)).toBe(true)
+  })
+  it('should return false for a nested object without a Ref value', () => {
+    const nestedObject = { nested: { nonRef: 1 } }
+
+    expect(isDeepRef(nestedObject)).toBe(false)
+  })
+  it('should return true for a nested array with a Ref value', () => {
+    const nestedArray = [[ref(1)]]
+
+    expect(isDeepRef(nestedArray)).toBe(true)
+  })
+  it('should return false for a nested array without a Ref value', () => {
+    const nestedArray = [[1]]
+
+    expect(isDeepRef(nestedArray)).toBe(false)
+  })
+  it('should return false for an object that has already been visited and does not contain a Ref', () => {
+    const item = { parent: null as any }
+    const parentItem = { children: [item] }
+    item.parent = parentItem
+
+    expect(isDeepRef(item)).toBe(false)
+  })
+  it('should return true for an object that has already been visited and contains a Ref', () => {
+    const item = { parent: ref<any>(null) }
+    const parentItem = { children: [ref(item)] }
+    item.parent.value = parentItem
+
+    expect(isDeepRef(item)).toBe(true)
+  })
+})