Event-driven test runners for Coursera Programming Languages class - https://class.coursera.org/proglang-002

racket-tester

#!/bin/sh
# When *.rkt files in the current directory are modified, this script runs
# their corresponding *test.rkt files and prints any errors or test fails.

inotifywait -qme close_write --format '%w%f' . | while read file; do
  # only process *.rkt files - ignore all other files
  test "${file%.rkt}" = "$file" && continue

  # map the *.rkt file to its corresponding *test.rkt
  # file, unless it already _is_ that *test.rkt file!
  test "${file%test.rkt}" = "$file" && file="${file%.rkt}test.rkt"
  
  # make sure *test.rkt file exists before running it
  test -f "$file" || continue

  # keep track of which test file is being run & when
  echo "\033[36m$file @ $(date)\033[0m"

  # run test file and print any errors or test fails
  racket "$file"
done

ruby-tester

#!/bin/sh
# When *.rb files in the current directory are modified, this script runs
# their corresponding *test.rb files and prints any errors or test fails.

inotifywait -qme close_write --format '%w%f' . | while read file; do
  # only process *.rb files - ignore all other files
  test "${file%.rb}" = "$file" && continue

  # map the *.rb file to its corresponding *test.rb
  # file, unless it already _is_ that *test.rb file!
  test "${file%test.rb}" = "$file" && file="${file%.rb}test.rb"

  # make sure *test.rb file exists before running it
  test -f "$file" || continue

  # keep track of which test file is being run & when
  echo "\033[36m$file @ $(date)\033[0m"

  # run test file and print any errors or test fails
  ruby -w "$file"
done

sml-tester

#!/bin/sh
# When *.sml files in the current directory are modified, this script runs
# their corresponding *test.sml files and prints any errors or test fails.

inotifywait -qme close_write --format '%w%f' . | while read file; do
  # only process *.sml files - ignore all other files
  test "${file%.sml}" = "$file" && continue

  # map the *.sml file to its corresponding *test.sml
  # file, unless it already _is_ that *test.sml file!
  test "${file%test.sml}" = "$file" && file="${file%.sml}test.sml"
  
  # make sure *test.sml file exists before running it
  test -f "$file" || continue

  # keep track of which test file is being run & when
  echo "\033[36m$file @ $(date)\033[0m"

  # run test file and print any errors or test fails
  sml "$file" </dev/null | sed -n \
    -e '/ Error: /,$p' \
    -e '/ Warning: /p' \
    -e '/ = false : bool$/p' \
    -e '/ = <hidden-value> : bool$/p'
done