How to execute JMeter test case from Java code - eclipse

Question

How do I run a JMeter test case from Java code?
I have followed the example Here from Blazemeter.com
My code is as follows:
public class BasicSampler {
public static void main(String[] argv) throws Exception {
// JMeter Engine
StandardJMeterEngine jmeter = new StandardJMeterEngine();
// Initialize Properties, logging, locale, etc.
JMeterUtils.loadJMeterProperties("/home/stone/Workbench/automated-testing/apache-jmeter-2.11/bin/jmeter.properties");
JMeterUtils.setJMeterHome("/home/stone/Workbench/automated-testing/apache-jmeter-2.11");
JMeterUtils.initLogging();// you can comment this line out to see extra log messages of i.e. DEBUG level
JMeterUtils.initLocale();
// Initialize JMeter SaveService
SaveService.loadProperties();
// Load existing .jmx Test Plan
FileInputStream in = new FileInputStream("/home/stone/Workbench/automated-testing/apache-jmeter-2.11/bin/examples/CSVSample.jmx");
HashTree testPlanTree = SaveService.loadTree(in);
in.close();
// Run JMeter Test
jmeter.configure(testPlanTree);
jmeter.run();
}
}
but I keep getting the following messages in the console and my test never executes.
INFO 2014-09-23 12:04:40.492 [jmeter.e] (): Listeners will be started after enabling running version
INFO 2014-09-23 12:04:40.511 [jmeter.e] (): To revert to the earlier behaviour, define jmeterengine.startlistenerslater=false
I have also tried uncommented jmeterengine.startlistenerslater=false from jmeter.properties file

Answer 1

How do you know that your "test never executes"?
What is in jmeter.log file (it should be in the root of your project). Or alternatively comment JMeterUtils.initLogging() line to see the full output in STDOUT
Have you changed relative path CSVSample_user.csv in "Get user details" CSV Data Set Config as it may resolve into a different location as it recommended in Using CSV DATA SET CONFIG
Is CSVSample.jtl file generated anywhere (again it should be in the root of your project by default)? What is in it?
The code looks good and I'm pretty sure that the problem is with the path to CSVSample_user.csv file and you have something like java.io.FileNotFoundException in your log. Please double check that CSVSample.jmx file contains valid full path to CSVSample_user.csv.
UPDATE TO ANSWER QUESTIONS IN COMMENTS
jmeter.log file should be under your Eclipse workspace folder by default
Looking into CSVSample.jmx there is a View Resulst in Table listener which is configured to store results under ~/CSVSample.jtl
If you want to see summarizer messages and "classic" .jtl reporting add next few lines before jmeter.configure(testPlanTree); stanza
Summariser summer = null;
String summariserName = JMeterUtils.getPropDefault("summariser.name", "summary");
if (summariserName.length() > 0) {
summer = new Summariser(summariserName);
}
String logFile = "/path/to/jtl/results/file.jtl";
ResultCollector logger = new ResultCollector(summer);
logger.setFilename(logFile);
testPlanTree.add(testPlanTree.getArray()[0], logger);

Answer 2

Try using library - https://github.com/abstracta/jmeter-java-dsl.
It supports implementing JMeter test as java code.
Below example shows how to implement and execute test for REST API. Same approach could be applied to other type of tests as well.
#Test
public void testPerformance() throws IOException {
TestPlanStats stats = testPlan(
threadGroup(2, 10,
httpSampler("http://my.service")
.post("{\"name\": \"test\"}", Type.APPLICATION_JSON)
),
//this is just to log details of each request stats
jtlWriter("test" + Instant.now().toString().replace(":", "-") + ".jtl")
).run();
assertThat(stats.overall().elapsedTimePercentile99()).isLessThan(Duration.ofSeconds(5));
}