Ruby on Rails testing shortcut script

testr

#!/bin/bash

# TODO: implement "-v" verbose arg
# TESTOPTS="-v"
#   -v    Verbose; log message to standard output.

# TODO: implement base command switching for `rails test` when Rails gem > v5

function _printUsage()
{
  cat <<EOF
Usage: testr <[options]>

Options:
  -a    Run all files per this pathspec:  test/**/*_test.rb
  -f    Specify explicit file path or pathspec.
  -s    Specify the seed to run. Useful when debugging failed CI build.
  -h    Display this help message.

Examples:
  testr -a
    % bundle exec rake TEST=test/**/*_test.rb

  testr test/dir/file_test.rb
  testr -f test/dir/file_test.rb
    % bundle exec rake TEST=test/dir/file_test.rb

  testr -s 12345
    % bundle exec rake TEST=test/**/*_test.rb TESTOPTS="--seed=12345"

  testr -f test/dir/foo_*_test.rb -s 54321
    % bundle exec rake TEST=test/dir/foo_*_test.rb TESTOPTS="--seed=54321"
EOF
  exit # always quit after displaying help message
}

while getopts "avf:s:" opt; do
  case $opt in
    a ) PATHSPEC="test/**/*_test.rb" ;;
    f ) PATHSPEC="$OPTARG" ;;
    s ) SEED="$OPTARG" ;;
    \?) _printUsage ;;
  esac
done

# shortcut requires no params, but only assign if PATHSPEC not previously set (ie. by "-a")
if [ $# -eq 1 ] && [ -z "$PATHSPEC" ]; then
  PATHSPEC=$1
fi

# if SEED is set, apply TESTOPTS
if [ -n "$SEED" ]; then
  OPTS=TESTOPTS=\"--seed=$SEED\"

  # default to all test files if seed set but no pathspec
  if [ -z "$PATHSPEC" ]; then
    PATHSPEC="test/**/*_test.rb"
  fi
fi

if [ -z "$PATHSPEC" ]; then
  _printUsage
fi

bundle exec rake TEST=$PATHSPEC $OPTS