如何编写Postman测试来验证请求是否返回'；400错误请求'；？

我需要一个测试用例来验证在没有必需字段的情况下进行API调用时是否返回“400错误请求”。（以前有一个bug，需要该字段，但是没有字段的请求被接受）

这是一个带有auth和原始主体的简单POST调用。当缺少的字段被返回时，它返回一个200

POST正确返回“400错误请求”，但我无法通过测试

以下测试全部失败：

pm.test("Status is an error", function () {
    pm.response.to.be.error;
});

答复机构是：

Instantiation of [simple type, class com.[company].[product].notifications.api.v2.models.NotificationCreateV2] value failed for JSON property content due to missing (therefore NULL) value for creator parameter content which is a non-nullable type
 at [Source: (byte[])"{
  "field1": "string",
  "field2": "Snort",
  "field3": "Signature 5102",
  "field4": "2019-04-19T10:34:03Z",
  "field5": 0,
  "field6": 4
}"; line: 8, column: 1] (through reference chain: com.[company].[product].notifications.api.v2.models.NotificationCreateV2["content"])

---

有一种方法可以显式地使一些测试通过或失败。 请参阅以下代码段，这可能会对您有所帮助

pass=true;
fail=false;
try{
    if(responseCode.code === 200)
    {
        var jsonData = pm.response.json();
        tests["Request with 200 status ok : "+ responseCode.code] = responseCode.code === 200 === fail;

    }else if(responseCode.code !== 200){
        console.error("Web-service failed");
        tests["Request with 400 Bad Request: "+ responseCode.code] = responseCode.code === 400;
    }
}catch(err){
    console.log("Something went wrong please contact to your Admin...!"+err);
}

---

您是否要添加显示邮递员和测试/状态代码等的屏幕截图

pass=true;
fail=false;
try{
    if(responseCode.code === 200)
    {
        var jsonData = pm.response.json();
        tests["Request with 200 status ok : "+ responseCode.code] = responseCode.code === 200 === fail;

    }else if(responseCode.code !== 200){
        console.error("Web-service failed");
        tests["Request with 400 Bad Request: "+ responseCode.code] = responseCode.code === 400;
    }
}catch(err){
    console.log("Something went wrong please contact to your Admin...!"+err);
}