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README.markdown

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+PHPUnit Parallel Testing
+====================
+This repository contains an attempt to do parallel testing with PHPUnit.
+The PHP file will loop over the PHPUnit files in the directory you specify and run PHPUnit in separate processes.
+You can specify how many tests you want to run at the same time. 
+
+When all the tests have run, the php file will echo the output of the tests.
+
+Arguments
+---------------------
+Run with php parallel.php
+Options are:
+-d directory/
+-m maxParallelTests

parallel.php

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+<?php
+
+	$arguments = getopt("d:m:");
+
+	$directory = (isset($arguments['d']) ? $arguments['d'] : "");
+	$maxParallel = (isset($arguments['m']) ? (int) $arguments['m'] : 5);;
+
+	$currentDirectory = dirname(__FILE__);
+
+	$results = $files = $runningProcesses = array();
+
+
+	// grab all the *.php files (phpunit tests) in the directory we specified
+	foreach (glob($directory . "*.php") as $filename) {
+		$filepath = realpath($currentDirectory) . "/" . $filename;
+
+	    if ($filepath === __FILE__) {
+	    	// don't run this script again :)
+	    	continue;
+	    }
+
+	    $files[] = $filepath;
+	}
+
+	if (empty($files)) {
+		die("No test files found");
+	}
+
+	$i = 0;
+
+	while ($i < sizeof($files)) {
+		if ($i >= $maxParallel) {
+			foreach ($runningProcesses as $key => $process) {
+				$status = proc_get_status($process['handle']);
+        		if ($status['running'] !== true) {
+        			unset($runningProcesses[$key]);
+        			unset($files[$process['nr']]);
+        			$files = array_values($files);
+        			$i--;
+
+				    // close the process
+				    proc_close($process['handle']);
+        		}
+			}
+			continue;
+		}
+
+		$descriptorspec = array(
+		   0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
+		   1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
+		   2 => array("pipe", "w") // stderr
+		);
+
+		$pipes = array();
+		$process = proc_open('phpunit ' . $files[$i], $descriptorspec, $pipes, null, null);
+
+		if (is_resource($process)) {
+			$runningProcesses[] = array('handle' => $process, 'nr' => $i);
+
+			$results[$files[$i]] = stream_get_contents($pipes[1]);
+
+		    // It is important that you close any pipes before calling
+		    // proc_close in order to avoid a deadlock
+		    fclose($pipes[1]);
+		}
+
+		$i++;
+
+		if (empty($files)) {
+			break;
+		}
+	}
+
+	// tests ended - display results
+	foreach ($results as $testFileName => $result) {
+		echo "*** Results for [" . $testFileName . "]: \n" . $result . "\n\n";
+	}