Add previously ignored test index files

Author: timvdalen

.gitignore

@@ -1,3 +1,4 @@
 vendor/
 .idea/
-index.php
+/index.php
+

test/container/index.php

@@ -0,0 +1,21 @@
+<?php
+require __DIR__ . '/vendor/autoload.php';
+
+echo "Connecting to redis", PHP_EOL;
+$client = new Predis\Client(['host' => 'redis']);
+echo "Connected!", PHP_EOL;
+
+for ($i = 0; $i < 3; $i += 1) {
+	echo "Starting the loop", PHP_EOL;
+	$semaphore = new \CodeOrange\RedisCountingSemaphore\Semaphore($client, 'test1', 10, 50);
+	$semaphore->acquire(0.5, 1000000);
+	// BEGIN critical section
+	echo "In the critical section!", PHP_EOL;
+	$critical = $client->incr('critical');
+	$client->publish('chan_critical', $critical);
+	sleep(rand(5, 15));
+	echo "Leaving the critical section!", PHP_EOL;
+	$client->decr('critical');
+	// END critical sections
+	$semaphore->release();
+}

test/index.php

@@ -0,0 +1,79 @@
+<?php
+use Symfony\Component\Process\Process;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+chdir(__DIR__);
+
+$nr_containers = 10;
+$per_container = 3;
+
+$resource_limit = 10;
+
+$docker_ip = $argv[1] ?? 'localhost';
+
+// Build a docker image from the contains of `container/`
+echo "Building docker image for test processes...";
+$docker_process = new Process('docker build -t code-orange/redis-counting-semaphore-test ./container/');
+$docker_process->run();
+if (!$docker_process->isSuccessful()) {
+	echo "Docker container failed to build";
+	exit(-1);
+}
+echo "done", PHP_EOL;
+// Get a redis docker image and start it
+echo "Starting redis image...";
+$redis_container = new Process('docker run --name semaphore-redis -p 6379:6379 -d redis redis-server --appendonly no --save "" --timeout 0');
+$redis_container->run();
+if (!$redis_container->isSuccessful()) {
+	echo "Redis container failed to start";
+	exit(-1);
+}
+echo "done", PHP_EOL;
+
+// Setup listener
+$client = new Predis\Client(['host' => $docker_ip, 'read_write_timeout' => -1]);
+$l = $client->pubSubLoop(['subscribe' => 'chan_critical']);
+echo "Starting listening...", PHP_EOL;
+
+// Start 100 containers based on the docker image in `container/`
+echo "Spawning processes for the tests...";
+for ($i = 0; $i < $nr_containers; $i += 1) {
+	$container = new Process('docker run --link semaphore-redis:redis -d code-orange/redis-counting-semaphore-test');
+	$container->run();
+	if (!$container->isSuccessful()) {
+		echo "One of the containers didn't start successfully", PHP_EOL;
+		exit(-1);
+	}
+}
+echo "done", PHP_EOL;
+
+// These containers will all try to obtain the same counting semaphore with a limit of 10, 3 times
+// Check that the amount of containers in their critical section is never great than the limit of 10
+$count = 0;
+foreach ($l as $msg) {
+	if ($msg->kind == 'message') {
+		$count++;
+		if ($msg->payload > $resource_limit) {
+			// More containers are in the critical section than should be
+			echo "There are currently {$msg->payload} users in the critical section, so the test has failed.";
+			exit(-1);
+		}
+		if ($count >= ($nr_containers * $per_container)) {
+			// We've reached the total number of times the critical section is entered
+			$l->stop();
+		}
+	}
+}
+
+echo "Done! All containers have finished and the resource limit was never exceeded.", PHP_EOL;
+
+// Stop the redis container
+echo "Stopping redis...";
+$redis_container_stop = new Process('docker kill semaphore-redis && docker rm semaphore-redis');
+$redis_container_stop->run();
+if (!$redis_container_stop->isSuccessful()) {
+	echo "Redis container failed to stop";
+	exit(-1);
+}
+echo "done", PHP_EOL;