Run Mocha and Istanbul for node tests on Bamboo

devops_bamboo_mocha_istanbul.sh

echo 'Running server tests with coverage'
node server/testing/load_test_fixtures.js
# Refer to https://github.com/gotwarlost/istanbul/issues/44#issuecomment-16093330
# for issues around specific command syntax to run mocha with istanbul
# mocha -R xunit -O output=test-reports/mocha.xml 'server/testing/tests/**/*.js'
istanbul cover --report lcov --report clover _mocha -- -R xunit -O output=test-reports/mocha.xml 'tests/**/*.js'

# ensure that non-zero is returned for any failures
# because istanbul may return 0 even in case of a test failure
if [ -r test-reports/mocha.xml ]; then

  # check results for failures
  failures=$(grep --count '<failure' ./test-reports/mocha.xml)
  if [ $failures -eq 0 ]; then
    echo 'Server tests ran successfully'
  else
    echo 'Server tests failed. Test results are available.'
    exit 1
  fi
else
  echo 'Server tests failed. No test results are available.'
  exit 1
fi