Suppose that the following is your target LoadRunner java protocol script:
import lrapi.lr;
public class Actions
{
public int init() throws Throwable
{
return 0;
}//end of init
public int action() throws Throwable
{
try
{
lr.start_transaction("test");
lr.log_message("This is the test transaction");
lr.end_transaction("test", lr.PASS);
}
catch (Exception e)
{
lr.end_transaction("test", lr.FAIL);
lr.error_message("ERROR: Received exception "+e.toString());
}
return 0;
}//end of action
public int end() throws Throwable
{
return 0;
}//end of end
}
This java loadrunner scripts runs with the following output:
Running Vuser...
Starting iteration 1.
Starting action Actions.
Notify: Transaction "test" started.
This is the test transaction
Notify: Transaction "test" ended with "Pass" status (Duration: 0.0073).
Ending action Actions.
Ending iteration 1.
Ending Vuser...
To test your script with junit, two main issues problems have to be solved:
- Api calls into lrapi.lr have to be stubbed out
- A junit test case has to be defined calling the loadrunner script methods
These issues can be solved as follows:
- Create a class LoadRunnerJunitTests
- Create a junit test method that calls into the loadrunner classes.
- Remove the lrapi.lr import
- Create a stub class "lr" implementing the lrapi.lr api methods and member variables used
- Remove the public visibility of the Actions class
- Add unit test failure calls in places where the script fails
The resulting class tests your script using the junit framework as follows:
package test;
import org.junit.Assert;
import org.junit.Test;
/*
* Example of how to test a LoadRunner Java protocol script using junit
*/
//TESTABILTY CHANGE: add the following junit test class to run the script methods
public class LoadRunnerJunitTests
{
@Test
public void testLoadrunner() throws Throwable
{
Actions a = new Actions();
a.init();
a.action();
a.end();
}
}
// Target LoadRunner script to be tested.
//TESTABILTY CHANGE: removed public visibilty of Actions class
class Actions
{
public int init() throws Throwable
{
return 0;
}//end of init
public int action() throws Throwable
{
try
{
lr.start_transaction("test");
lr.log_message("This is the test transaction");
lr.end_transaction("test", lr.PASS);
}
catch (Exception e)
{
lr.end_transaction("test", lr.FAIL);
lr.error_message("ERROR: Received exception : "+e.toString());
//TESTABILITY CHANGE: fail the unit test if the script fails
Assert.fail("Loadrunner script failure");
}
return 0;
}//end of action
public int end() throws Throwable
{
return 0;
}//end of end
}
//TESTABILTY CHANGE: add the following lr class implementing the needed loadrunner api methods and member variables
class lr
{
public static String PASS = "PASS";
public static String FAIL = "FAIL";
public static String AUTO = "AUTO";
public static void start_transaction(String str)
{
System.out.println("starting transaction " + str);
}
public static void end_transaction(String str, String status)
{
System.out.println("ending transaction " + str + " with status " + status);
}
public static void log_message(String str)
{
System.out.println("log message " + str);
}
public static void error_message(String str)
{
System.out.println("error message " + str);
}
public static void set_transaction_status(String str)
{
System.out.println("set_transaction_status " + str);
}
public static void abort()
{
System.out.println("aborting ");
System.exit(1);
}
}
The junit test of the loadrunner script runs with the following output:
starting transaction test
log message This is the test transaction
ending transaction test with status PASS
