diff --git a/src/helper/nest.test.ts b/src/helper/nest.test.ts
new file mode 100644
index 0000000..9af96bd
--- /dev/null
+++ b/src/helper/nest.test.ts
@@ -0,0 +1,79 @@
+import { expect, test } from 'vitest';
+import { getNestedProperty } from './nest';
+
+test('getNestedProperty - basic object', () => {
+    const data = {
+        a: {
+            b: {
+                c: 42
+            }
+        }
+    }
+    expect(getNestedProperty<number>(data, 'a.b.c')).toBe(42);
+})
+
+test('getNestedProperty - nested arrays', () => {
+    const data = {
+        translations: [
+            { languages_code: 'zh-CN', name: '中文' },
+            { languages_code: 'en-US', name: 'English' }
+        ]
+    };
+    expect(getNestedProperty<string>(data, 'translations.name')).toEqual(['中文', 'English']);
+})
+
+test('getNestedProperty - missing path', () => {
+    const data = {
+        a: {
+            b: {
+                c: 42
+            }
+        }
+    }
+    expect(getNestedProperty<number>(data, 'a.x.c')).toBeUndefined();
+})
+
+test('getNestedProperty - array of objects', () => {
+    const data = {
+        items: [
+            {
+                id: 1, value: {
+                    text: 'one'
+                }
+            },
+            {
+                id: 2, value: {
+                    text: 'two'
+                }
+            },
+            {
+                id: 3, value: {
+                    text: 'three'
+                }
+            }
+        ]
+    };
+    expect(getNestedProperty<string>(data, 'items.value.text')).toEqual(['one', 'two', 'three']);
+})
+
+test('getNestedProperty - array in array', () => {
+    const data = {
+        groups: [
+            {
+                name: 'group1',
+                value: [
+                    { text: 'a' },
+                    { text: 'b' }
+                ]
+            },
+            {
+                name: 'group2',
+                value: [
+                    { text: 'c' },
+                    { text: 'd' }
+                ]
+            }
+        ]
+    }
+    expect(getNestedProperty<string>(data, 'groups.value.text')).toEqual([['a', 'b'], ['c', 'd']]);
+})
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