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Is there any way that i need not write junit test cases and it gets generated automatically.

Actually i have an application which is fully tested but has no junit written for it. So i am sure that it is complete and has not much error. But my client wants a code coverage report for the same.

Is there any tool available which can generate test cases automatically.

I am using java, jboss portal.

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    Generating tests just to get the coverage number up will benefit no one. Either talk to your client and explain the situation or write real tests that tests real things. Commented May 29, 2012 at 6:31
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    what does "fully tested" mean? Commented May 29, 2012 at 6:53
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    Having them "automatically generated" misses the point of testing. Commented May 29, 2012 at 6:56

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Writing the unit tests for the sake of writing or for coverage is a bad idea. Unit tests should be written to actually test your code. In your situation you could start writing the tests for the more important classes first and then gradually work towards increasing the code coverage. You might even find some real bugs in this process.

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+1 However, there are some use cases in which generated tests may be useful, regression testing for example. The generated code, however, is sometimes really hard to follow and understand.
i did found some bugs, but need to close it asap hence looking for some tool
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Randoop is the framework you need https://randoop.github.io

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Check Google's CodePro Analytix. It even has options to generate test cases with mocks. There is also an eclipse plugin. http://code.google.com/javadevtools/codepro/doc/features/junit/test_case_generation.html

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i have to cover the portion of code where i have request and response as well that too jboss request response
As far as i know, you can mock any interface using this tool. The tool has options to specify the interfaces that have to be mocked.
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For mathematical formulas try https://github.com/junit-team/junit/wiki/Theories

and example of a tool for generating tests: https://developers.google.com/java-dev-tools/codepro/doc/features/junit/test_case_generation http://sourceforge.net/projects/junitgenerator/

Maybe use Cucumber and Datatable inputs for different scenarios http://jeannotsweblog.blogspot.com/2013/02/cucumber-4-advanced-gherkin.html

I am looking into trying the Json input http://collectiveidea.com/blog/archives/2011/07/12/test-your-api-with-cucumber-and-json_spec/

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I do agree that generating tests is definitely not the way to go, but may be the starting point for writing real tests. careful: CodePro generates really silly tests sometimes! But when you say your code is fully tested then I assume that you have written some sort of main-method that is doing all the testing stuff. Generating test reports for these main-method-based-tests would be similar to JUnit test coverage reporting. For example by using cobertura, you first instrument your compiled classes, start your test-main methods and examine the generated coverage-report-files with "sonar" for example.

The same should work if you manually test your application use case for use case. But in this case I would strongly suggest to automate these tests at least with some tool like selenium etc.

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