Bash Pre Commit Hook

pre-commit.sh

#!/bin/bash

# A pre-commit hook that will stash any changes so that we are running our tests
# against what we are committing, not what was on in memory.


# Because I was having trouble getting trap to play nicely with any signal except
# EXIT we just carry around our status and exit with it at the end
status=0

function git_stash() {

    echo "Stashing changes before running tests..."
    git stash --include-untracked --keep-index

    if [ "$?" != "0" ]
    then
        echo "Failed!..."
        exit 1
    else
        echo
        echo "Ok!..."
    fi

}

function git_unstash() {

    echo "Restoring stashed changes..."
    git stash pop --quiet --index
    exit ${status}

}

function knife_test() {

    local grep_code=0
    echo "Testing Cookbook Syntax with Knife..."
    # Use egrep to limit to just error lines (stderr not respected by knife)
    # Should just include lines with FATAL and
    knife cookbook test --all   | egrep [A-Z][A-Z]; grep_code=$?

    if [ "${grep_code}" == "0" ]
    then
        echo "Failed!..."
        status=1
        exit
    else
        echo
        echo "Ok!..."
    fi

    return

}

function foodcritic_test() {

    echo "Using Foodcritic to lint our cookbooks..."

    # Stricter Etsy rules included w/ autofail
    # foodcritic -t any -f any -I foodcritic-rules/rules.rb cookbooks/

    foodcritic -f any cookbooks/

    if [ "$?" != "0" ]
    then
        echo "Failed!..."
        status=1
        exit
    else
        echo "Ok!..."
    fi

    return

}

function rspec_test() {

    echo "Running Rspec on yipit cookbooks..."
    rspec cookbooks/*

    if [ "$?" != "0" ]
    then
        echo "Failed!..."
        status=1
        exit
    fi

    return

}

trap git_unstash EXIT

# Stash any uncommitted changes so we are testing the right things
git_stash

# Check for syntax errors
knife_test

# Lint our custom cookbooks
foodcritic_test

# Run our Unit Tests with Rspec
rspec_test
echo

exit ${status}