evosuite doesn't generate tests with a different GA

[sianico93]

Context

for university purposes i'm trying to extend evosuite.
before i'm tryng to run it first with a different GA, without success.

Steps to Reproduce

after compile evosuite with maven, following the tutorial on the website, i try to run evosuite having changed some parameters like GA.
reading the documentation, the command line i wrote is this:
$EvoSuite -class tutorial.Stack -projectCP Tutorial_Stack/target/classes/ -Dalgorithm=CELLULAR_GA
where "EvoSuite" is the export where i declare the command "java -jar path_evosuite-master.jar"

Result

the result is this:

• EvoSuite 1.2.1-SNAPSHOT
• Going to generate test cases for class: tutorial.Stack
• Starting Client-0
• Connecting to master process on port 6197
• Analyzing classpath:
  • Tutorial_Stack/target/classes/
• Finished analyzing classpath
• Generating tests for class tutorial.Stack
• Test criteria:
  • Line Coverage
  • Branch Coverage
  • Exception
  • Mutation testing (weak)
  • Method-Output Coverage
  • Top-Level Method Coverage
  • No-Exception Top-Level Method Coverage
  • Context Branch Coverage
• Running the Cellular GA with the 'LINEAR_FIVE' neighbourhoods model
• Computation finished
  [MASTER] 19:37:01.611 [logback-2] ERROR ClientNodeImpl - Error when generating tests for: tutorial.Stack with seed 1669660620731. Configuration id : null
  java.lang.UnsupportedOperationException: isMaximizationFunction() called on mock
  at org.evosuite.ga.FitnessFunctionMock.isMaximizationFunction(FitnessFunctionMock.java:81)
  at org.evosuite.ga.localsearch.DefaultLocalSearchObjective.addFitnessFunction(DefaultLocalSearchObjective.java:70)
  at org.evosuite.ga.metaheuristics.GeneticAlgorithm.addFitnessFunction(GeneticAlgorithm.java:430)
  at java.util.ArrayList.forEach(ArrayList.java:1259)
  at org.evosuite.ga.metaheuristics.GeneticAlgorithm.addFitnessFunctions(GeneticAlgorithm.java:434)
  at org.evosuite.strategy.MOSuiteStrategy.generateTests(MOSuiteStrategy.java:88)
  at org.evosuite.TestSuiteGenerator.generateTests(TestSuiteGenerator.java:630)
  at org.evosuite.TestSuiteGenerator.generateTestSuite(TestSuiteGenerator.java:208)
  at org.evosuite.rmi.service.ClientNodeImpl.lambda$startNewSearch$0(ClientNodeImpl.java:140)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at java.lang.Thread.run(Thread.java:750)
  [MASTER] 19:37:01.716 [main] ERROR SearchStatistics - No statistics has been saved because EvoSuite failed to generate any test case
  [MASTER] 19:37:01.816 [main] ERROR TestGeneration - failed to write statistics data

*** Conclusion
if I have not misunderstood, the system runs using the GA chosen, but fails to generate tests.
can anyone help me to understand how to use it with different ga successfully?

[jose]

You might need to also include -generateSuite at the end of your command. Long story short, MOSA and DynaMOSA require -generateMOSuite (which is currently the default behaviour) and any other GA requires -generateSuite. (This should perhaps be better documented.)

[jose]

You might need to also include -generateSuite at the end of your command. Long story short, MOSA and DynaMOSA require -generateMOSuite (which is currently the default behaviour) and any other GA requires -generateSuite. (This should perhaps be better documented.)