When using phpunit and logging output using TAP (from command line but easier from phpunit xml configuration), this script will re-run phpunit with only Wailed tests from last test.

test-run-failed

#!/bin/bash

# parses a tap log file from phpunit to find failed tests
#
# This assumes you setup a phpunit.xml (or .dist.xml) so simply add something like the following under <phpunit>
# <logging>
#   <log type="tap" target="/tmp/.projectname-phpunit-test-log.tap" />
# </logging>
# 
# tap is used instead of json and xml because these log files get big
# and needs to be loaded completely before parsing into it to find failed tests
# and for tap we can simply read the file line by line to find those starting with "not ok"
#
# if you don't have a phpunit xml configuration you'll have to adapt this script
#
# this script assumes it is placed in the root of your project
# don't forget to set it as executable (chmod +x ./test-run-failed)
# and when running it from this root dir, use (./test-run-failed)

# adjust those to your liking
xmlconfig="phpunit.xml"
xmldir="app/"
php_cli="/usr/bin/php"

# these 2 lines works on linux, should work on mac and for windows users I don't know (and don't care)
script=$(readlink /proc/$$/fd/255)
scriptdir=$(dirname $script)"/"

# read log file location
phpunit_tap_log=$($php_cli -r '
  $xml = simplexml_load_file("'${scriptdir}${xmldir}${xmlconfig}'");
  if(@$xml->logging[0]->log[0]["type"] == "tap" && ($logfile = @$xml->logging[0]->log[0]["target"])) {
    echo $logfile;
    return 0;
  } else {
    return 1;
  };
')

# exit if we could not find it
if [ $? -ne 0 ]; then
  echo "Could not find tap log file destination in $xmldir/$xmlconfig";
  exit 1
fi

# check if that log file exists right now
if [ ! -e $phpunit_tap_log ]; then
  echo "Logfile not found. Run the full test suite";
  exit 1
fi

# get failed tests
failed_tests=$($php_cli -r '
  $failed = array();
  $handle = fopen("'$phpunit_tap_log'", "r");
  if(!$handle) {
    return 1;
  }
  while(false !== ($line = fgets($handle))) {
    if(substr($line, 0, 6) == "not ok") {
      $class_and_method = substr($line, strrpos($line, " ")+1);
      $class = substr($class_and_method, 0, strpos($class_and_method, "::"));
      $failed[str_replace("\\", "\\\\", $class)] = true;
    }
  }
  if(!$failed) {
    return 1;
  }
  echo implode("|", array_filter(array_keys($failed)));
  return 0;
')

# exit if there was an error
if [ $? -ne 0 ]; then
  echo "Could not extract failed tests from $phpunit_tap_log";
  exit 1
fi

# exit if no failed tests
if [ "$failed_tests" = "" ]; then
  echo "No failed tests in $phpunit_tap_log";
  exit 1
fi

# run filtering failed tests
phpunit -c ${scriptdir}${xmldir} --filter "'${failed_tests}'"

exit $?