how to use kanonizo with defeccts4j . please provide detailed answer

[mudasirhw]

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[djpaterson]

Hi @mudasirhw

The Kanonizo tool is designed to be used with any Java program, not just with Defects4J - however, i have used the tool with Defects4J for a couple of published research papers (see #6)

Firstly, check out the project using Defects4J
defects4j checkout -p Chart -v 1b -w /tmp/Chart-1-b

Compile the project using Defects4J
cd /tmp/Chart-1-b && defects4j compile

Find the location of the source directory
SRC_DIR=$(defects4j export -p dir.bin.classes)

Find the location of the compiled test directory (note that default Defects4J implementation does not support this but my fork of the repo github.com/djpaterson/defects4j does allow this automatically
TEST_DIR=$(defects4j export -p dir.bin.tests)

Ensure that both JUnit and Kanonizo Jar are on your classpath
CP=$PATH_TO_JUNIT:$PATH_TO_KANONIZO

Get the path required for compilation from Defects4J (this is used by Kanonizo to load classes)
BUILD_CP=$(defects4j export -p cp.compile

Run Kanonizo:
java -cp $cp:$BUILD_CP org.kanonizo.Main -s $SRC_DIR -t $TEST_DIR -a <your-algorithm-choice -Dlog_dir=<DESIRED_OUTPUT_DIRECTORY> -Dlog_filename=<DESIRED_FILENAME>

If you need code coverage for your algorithm, add -Dinstrumenter=Scytheto the command line

The resulting ordering will be created as <YOUR_OUTPUT_DIRECTORY>/ordering/<YOUR_DESIRED_FILENAME>.csv - you can again use the information from defects4j to work out the location of the "trigger tests"

trigger_tests=$(defects4j export -p tests.trigger)
for test in $trigger_tests; do
  # turn test into Kanonizo format
 test=$(echo $test | perl -p -e "s/(.*)::(.*)/\2(\1)/g")
 # Extract index of trigger test from file
 index_of_failing_test=$(grep -n $test <YOUR_ORDERING_FILE> | cut -d':' -f1)
 echo "$test,$index_of_failing_test" >> results.csv
done

This will create a file containing the index of all of the trigger tests from the version in question.

Let me know if you have further questions.
Thanks,
Dave

[mudasirhw]

Hi Dave, i do not know how should i reoreder the execution of test cases based on my algorithm. i have no idea of intrumentation. i am also not ableto comprehend how the techniques implemented by you reorder the test cases. Does it require me indepth knowledhe of java. i am stuck.