MDL-32323 experimental web UI for execution of PHPUnit tests

It is not localised intentionally because only developers should use it…

admin/tool/phpunit/cli/util.php

@@ -20,9 +20,11 @@
  * Exit codes:
  *  0   - success
  *  1   - general error
- *  130 - coding error
+ *  130 - missing PHPUnit error
  *  131 - configuration problem
+ *  132 - install new test database
  *  133 - drop existing data before installing
+ *  134 - can not create main phpunit.xml
  *
  * @package    tool_phpunit
  * @copyright  2012 Petr Skoda {@link http://skodak.org}
@@ -31,10 +33,11 @@
 
 define('PHPUNIT_UTIL', true);
 
+require_once(__DIR__ . '/../../../../lib/phpunit/bootstraplib.php');
+
 // verify PHPUnit installation
 if (!@include_once('PHPUnit/Autoload.php')) {
-    fwrite(STDERR, "Can not load PHPUnit PEAR library, is it installed?\n");
-    exit(1);
+    phpunit_bootstrap_error(130);
 }
 
 require(__DIR__ . '/../../../../lib/phpunit/bootstrap.php');
@@ -51,6 +54,7 @@ list($options, $unrecognized) = cli_get_params(
         'drop'        => false,
         'install'     => false,
         'buildconfig' => false,
+        'diag'        => false,
         'help'        => false,
     ),
     array(
@@ -63,17 +67,19 @@ if ($unrecognized) {
     cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
 }
 
+$diag = $options['diag'];
 $drop = $options['drop'];
 $install = $options['install'];
 $buildconfig = $options['buildconfig'];
 
-if ($options['help'] or (!$drop and !$install and !$buildconfig)) {
+if ($options['help'] or (!$drop and !$install and !$buildconfig and !$diag)) {
     $help = "Various PHPUnit utility functions
 
 Options:
 --drop                Drop database and dataroot
 --install             Install database
 --buildconfig         Build /phpunit.xml from /phpunit.xml.dist that includes suites for all plugins and core
+--diag                Diagnose installation and return error code only
 
 -h, --help            Print out this help
 
@@ -81,13 +87,24 @@ Example:
 \$/usr/bin/php lib/phpunit/tool.php
 ";
     echo $help;
-    die;
+    exit(0);
 }
 
-if ($buildconfig) {
-    phpunit_util::build_config_file();
+if ($diag) {
+    list($errorcode, $message) = phpunit_util::testing_ready_problem();
+    if ($errorcode) {
+        phpunit_bootstrap_error($errorcode, $message);
+    }
     exit(0);
 
+} else if ($buildconfig) {
+    if (phpunit_util::build_config_file()) {
+        exit(0);
+    } else {
+        phpunit_bootstrap_error(134);
+    }
+
+
 } else if ($drop) {
     phpunit_util::drop_site();
     // note: we must stop here because $CFG is messed up and we can not reinstall, sorry