JMeter可以JSON路径断言插件匹配数组吗？

Question

在我的一项测试中，我需要检查数组中的数据是否与预期结果匹配。 我发送 API 调用并收到以下 JSON 响应：

{
"sting": "value",
"another string": "value",
"array": ["value1","value2","value3"]
}

使用 JSON 路径断言插件，我可以单独检查每个值。

$.array[0]

有没有办法在一个断言中评估所有数组的值？

Answer 1

目前无法查看Can't check an array with JSONPath Assertion. Update JSONPath to 2.1?。

您可以使用Response Assertion 来解决此问题，如下所示：

1. 将 JSON 路径提取器添加为返回上述 JSON 的请求的子项，并将其配置如下：

   • 目标变量名称：任何有意义的名称，即array
   • JSON 路径表达式：$.array

2. 在JSON路径提取器之后添加响应断言并配置如下：

   • 应用于 -> JMeter 变量 -> array
   • 模式匹配规则：Equals

   • 要测试的模式：["value1","value2","value3"] - 确保没有尾随空格、新行等。

示例测试计划：

<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="2.8" jmeter="2.13 r1665067">
  <hashTree>
    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">
      <stringProp name="TestPlan.comments"></stringProp>
      <boolProp name="TestPlan.functional_mode">false</boolProp>
      <boolProp name="TestPlan.serialize_threadgroups">false</boolProp>
      <elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
        <collectionProp name="Arguments.arguments"/>
      </elementProp>
      <stringProp name="TestPlan.user_define_classpath"></stringProp>
    </TestPlan>
    <hashTree>
      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group" enabled="true">
        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
          <boolProp name="LoopController.continue_forever">false</boolProp>
          <stringProp name="LoopController.loops">1</stringProp>
        </elementProp>
        <stringProp name="ThreadGroup.num_threads">1</stringProp>
        <stringProp name="ThreadGroup.ramp_time">1</stringProp>
        <longProp name="ThreadGroup.start_time">1456157004000</longProp>
        <longProp name="ThreadGroup.end_time">1456157004000</longProp>
        <boolProp name="ThreadGroup.scheduler">false</boolProp>
        <stringProp name="ThreadGroup.duration"></stringProp>
        <stringProp name="ThreadGroup.delay"></stringProp>
      </ThreadGroup>
      <hashTree>
        <kg.apc.jmeter.samplers.DummySampler guiclass="kg.apc.jmeter.samplers.DummySamplerGui" testclass="kg.apc.jmeter.samplers.DummySampler" testname="jp@gc - Dummy Sampler" enabled="true">
          <boolProp name="WAITING">true</boolProp>
          <boolProp name="SUCCESFULL">true</boolProp>
          <stringProp name="RESPONSE_CODE">200</stringProp>
          <stringProp name="RESPONSE_MESSAGE">OK</stringProp>
          <stringProp name="REQUEST_DATA">Dummy Sampler used to simulate requests and responses
without actual network activity. This helps debugging tests.</stringProp>
          <stringProp name="RESPONSE_DATA">{
&quot;sting&quot;: &quot;value&quot;,
&quot;another string&quot;: &quot;value&quot;,
&quot;array&quot;: [&quot;value1&quot;,&quot;value2&quot;,&quot;value3&quot;]
}</stringProp>
          <stringProp name="RESPONSE_TIME">${__Random(50,500)}</stringProp>
          <stringProp name="LATENCY">${__Random(1,50)}</stringProp>
          <stringProp name="CONNECT">${__Random(1,5)}</stringProp>
        </kg.apc.jmeter.samplers.DummySampler>
        <hashTree>
          <com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor guiclass="com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.gui.JSONPathExtractorGui" testclass="com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor" testname="jp@gc - JSON Path Extractor" enabled="true">
            <stringProp name="VAR">array</stringProp>
            <stringProp name="JSONPATH">$.array</stringProp>
            <stringProp name="DEFAULT"></stringProp>
            <stringProp name="VARIABLE"></stringProp>
            <stringProp name="SUBJECT">BODY</stringProp>
          </com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor>
          <hashTree/>
          <ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="Response Assertion" enabled="true">
            <collectionProp name="Asserion.test_strings">
              <stringProp name="-1728402013">[&quot;value1&quot;,&quot;value2&quot;,&quot;value3&quot;]</stringProp>
            </collectionProp>
            <stringProp name="Assertion.test_field">Assertion.response_data</stringProp>
            <boolProp name="Assertion.assume_success">false</boolProp>
            <intProp name="Assertion.test_type">8</intProp>
            <stringProp name="Assertion.scope">variable</stringProp>
            <stringProp name="Scope.variable">array</stringProp>
          </ResponseAssertion>
          <hashTree/>
        </hashTree>
      </hashTree>
    </hashTree>
  </hashTree>
</jmeterTestPlan>

如果您的响应可能会有所不同，即数组成员的顺序发生变化，您可能需要考虑基于脚本的断言，即改为 JSR223 Assertion

有关在测试中使用 JMeter 断言的全面信息，请参阅 How to Use JMeter Assertions in Three Easy Steps 指南。

Answer 2

我可以通过使用.. 语法来实现它。在您的情况下，它将是 $..array ，它将返回

[
    "value1",
    "value2",
    "value3"
]

然后，例如，您可以选中“附加断言值”框和“匹配为正则表达式”，然后将\w+ 作为预期值，断言那里有一个词。