增加 JSON.parse<string>的测试示例

uni_modules/uts-tests/utssdk/JSON.uts

@@ -512,5 +512,28 @@ export function testJSON() : Result {
 
     })
 
+    test('parse-type-string', () => {
+      // #ifndef APP-ANDROID
+      
+      let bb2 = JSON.parse<string>('{"a":12}')
+      console.log(typeof bb2)
+      let bb3 = JSON.parse<string>('7897987')
+      console.log(typeof bb3)
+      let bb4 = JSON.parse<string>('null')
+      console.log(typeof bb4)
+     
+      expect(bb2).toEqual('{"a":12}')
+      expect(typeof bb2).toEqual("string")
+      
+      expect(bb3).toEqual('7897987')
+      expect(typeof bb3).toEqual("string")
+      
+      expect(bb4).toEqual('null')
+      expect(typeof bb4).toEqual("string")
+      
+      // #endif
+
+    })
+
   })
 }
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