NAME

       heckle - mutate Ruby code and run test

SYNOPSIS

       heckle class_name [method_name]

DESCRIPTION

       `heckle' is a mutation tester. It modifies your code and runs your tests to make sure they
       fail. The idea is that if code can be changed and your tests  don't  notice,  either  that
       code isn't being covered or it doesn't do anything.

       -v, --verbose
              Loudly explain heckle run

       -t, --tests TEST_PATTERN
              Location of tests (glob)

       -F, --force
              Ignore initial test failures

              Best used with --focus

       --assignments
              Only mutate assignments

       -b, --branches
              Only mutate branches

       -f, --focus
              Apply the eye of sauron

       -T, --timeout SECONDS
              The maximum time for a test run in seconds

              Used to catch infinite loops

       -n, --nodes NODES
              Nodes to mutate

              Possible  values:  call,  cvasgn ,dasgn, dasgn_curr, false, gasgn, iasgn, if, iter,
              lasgn, lit, str, true, until, while

       -x, --exclude-nodes NODES
              Nodes to exclude