package com.baeldung.controller;

import com.baeldung.model.Response;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RestController;

import java.util.UUID;

import static java.lang.String.format;

public class TestController {

@GetMapping("/api/test")

public Response test() {

return new Response(format("Test message... %s.", UUID.randomUUID()));

}

}

package com.baeldung.model;

import java.time.Instant;

import java.util.UUID;

public class Response {

private Instant timestamp;

private UUID uuid;

private String message;

public Response(String message) {

this.timestamp = Instant.now();

this.uuid = UUID.randomUUID();

this.message = message;

}

public Instant getTimestamp() {

return timestamp;

}

public void setTimestamp(Instant timestamp) {

this.timestamp = timestamp;

}

public UUID getUuid() {

return uuid;

}

public void setUuid(UUID uuid) {

this.uuid = uuid;

}

public String getMessage() {

return message;

}

public void setMessage(String message) {

this.message = message;

}

}

<?xml version="1.0" encoding="UTF-8"?>

<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.4.1">

<hashTree>

<TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">

<stringProp name="TestPlan.comments">To run this test plan you must also be running the Spring application &quot;JmeterApplication&quot; That can be found in this directory</stringProp>

<boolProp name="TestPlan.functional_mode">false</boolProp>

<boolProp name="TestPlan.tearDown_on_shutdown">true</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>

<boolProp name="ThreadGroup.scheduler">false</boolProp>

<stringProp name="ThreadGroup.duration"></stringProp>

<stringProp name="ThreadGroup.delay"></stringProp>

<boolProp name="ThreadGroup.same_user_on_next_iteration">true</boolProp>

</ThreadGroup>

<hashTree>

<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Call GET Test endpoint " enabled="true">

<elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">

<collectionProp name="Arguments.arguments"/>

</elementProp>

<stringProp name="HTTPSampler.domain">localhost</stringProp>

<stringProp name="HTTPSampler.port">8080</stringProp>

<stringProp name="HTTPSampler.protocol">http</stringProp>

<stringProp name="HTTPSampler.contentEncoding"></stringProp>

<stringProp name="HTTPSampler.path">/api/test</stringProp>

<stringProp name="HTTPSampler.method">GET</stringProp>

<boolProp name="HTTPSampler.follow_redirects">true</boolProp>

<boolProp name="HTTPSampler.auto_redirects">false</boolProp>

<boolProp name="HTTPSampler.use_keepalive">true</boolProp>

<boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>

<stringProp name="HTTPSampler.embedded_url_re"></stringProp>

<stringProp name="HTTPSampler.connect_timeout"></stringProp>

<stringProp name="HTTPSampler.response_timeout"></stringProp>

</HTTPSamplerProxy>

<hashTree>

<JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="JSON Extractor" enabled="true">

<stringProp name="JSONPostProcessor.referenceNames">message</stringProp>

<stringProp name="JSONPostProcessor.jsonPathExprs">$.message</stringProp>

<stringProp name="JSONPostProcessor.match_numbers">1</stringProp>

<boolProp name="JSONPostProcessor.compute_concat">true</boolProp>

<stringProp name="JSONPostProcessor.defaultValues">NOT_FOUND</stringProp>

</JSONPostProcessor>

<hashTree/>

<BeanShellPostProcessor guiclass="TestBeanGUI" testclass="BeanShellPostProcessor" testname="Response to file using BeanShell PostProcessor" enabled="true">

<stringProp name="filename"></stringProp>

<stringProp name="parameters"></stringProp>

<boolProp name="resetInterpreter">false</boolProp>

<stringProp name="script">FileWriter fWriter = new FileWriter(&quot;/Users/liamgarvie/Documents/result.txt&quot;, true);

BufferedWriter buff = new BufferedWriter(fWriter);

buff.write(&quot;Response Code : &quot; + ctx.getPreviousResult().getResponseCode());

buff.write(System.getProperty(&quot;line.separator&quot;));

buff.write(&quot;Response Headers : &quot; + ctx.getPreviousResult().getResponseHeaders());

buff.write(System.getProperty(&quot;line.separator&quot;));

buff.write(&quot;Response Body : &quot; + new String(ctx.getPreviousResult().getResponseData()));

buff.write(&quot;More complex extraction : &quot; + vars.get(&quot;message&quot;));

buff.close();

fWriter.close();</stringProp>

</BeanShellPostProcessor>

<hashTree/>

<ResultSaver guiclass="ResultSaverGui" testclass="ResultSaver" testname="Response to file using file write Listener" enabled="true">

<stringProp name="FileSaver.filename">response</stringProp>

<boolProp name="FileSaver.errorsonly">false</boolProp>

<boolProp name="FileSaver.successonly">false</boolProp>

<boolProp name="FileSaver.skipsuffix">false</boolProp>

<boolProp name="FileSaver.skipautonumber">false</boolProp>

</ResultSaver>

<hashTree/>

</hashTree>

<ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="true">

<boolProp name="ResultCollector.error_logging">false</boolProp>

<objProp>

<name>saveConfig</name>

<value class="SampleSaveConfiguration">

<time>true</time>

<latency>true</latency>

<timestamp>true</timestamp>

<success>true</success>

<label>true</label>

<code>true</code>

<message>true</message>

<threadName>true</threadName>

<dataType>true</dataType>

<encoding>false</encoding>

<assertions>true</assertions>

<subresults>true</subresults>

<responseData>false</responseData>

<samplerData>false</samplerData>

<xml>false</xml>

<fieldNames>true</fieldNames>

<responseHeaders>false</responseHeaders>

<requestHeaders>false</requestHeaders>

<responseDataOnError>false</responseDataOnError>

<saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>

<assertionsResultsToSave>0</assertionsResultsToSave>

<bytes>true</bytes>

<sentBytes>true</sentBytes>

<url>true</url>

<threadCounts>true</threadCounts>

<idleTime>true</idleTime>

<connectTime>true</connectTime>

</value>

</objProp>

<stringProp name="filename"></stringProp>

</ResultCollector>

<hashTree/>

</hashTree>

</hashTree>

</hashTree>

</jmeterTestPlan>

package com.baeldung;

import org.junit.jupiter.api.Test;

import org.springframework.boot.test.context.SpringBootTest;

import org.springframework.mock.web.MockHttpServletResponse;

import org.springframework.test.web.servlet.MockMvc;

import org.springframework.test.web.servlet.setup.MockMvcBuilders;

import org.springframework.web.context.WebApplicationContext;

import static org.assertj.core.api.Assertions.assertThat;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;

import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;

import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

class JmeterIntegrationTest {

MockMvc mvc;

public JmeterIntegrationTest(WebApplicationContext wac) {

this.mvc = MockMvcBuilders.webAppContextSetup(wac).build();

}

@Test

void whenCallingTestController_thenWeShouldRecieveRandomizedResponse() throws Exception {

MockHttpServletResponse response = mvc.perform(get("/api/test"))

.andDo(print())

.andExpect(status().isOk())

.andReturn()

.getResponse();

assertThat(response.getContentAsString())

.contains("Test message...");

}

}