Simple Git pre-commit hook for running specs on a Rails project before committing. Install by pasting into .git/hooks/pre-commit, then do "chmod g+x .git/hooks/pre-commit"

pre-commit

#!/bin/bash

# Stash unstaged changes before running tests
git stash -q --keep-index

# Run tests
NUM_FAILS=`bundle exec rspec --format=progress | grep "example" | grep "fail" | awk {'print $3'}`

# Unstash
git stash pop -q

if [ $NUM_FAILS -ne 0 ]
then
  echo -e "Can't commit; there are $NUM_FAILS broken tests!"
  exit 1
else
  echo -e "All tests passed. Committing...\n"
  exit 0
fi