Added help to test runner

tests/SzurubooruTestOptions.php

@@ -4,4 +4,5 @@ class SzurubooruTestOptions
 	public $cleanDatabase;
 	public $filter;
 	public $dbDriver;
+	public $help;
 }

tests/SzurubooruTestRunner.php

@@ -5,6 +5,12 @@ class SzurubooruTestRunner implements ITestRunner
 	{
 		$options = $this->getOptions();
 
+		if ($options->help)
+		{
+			$this->printHelp();
+			exit(0);
+		}
+
 		$this->resetEnvironment($options);
 		if ($options->cleanDatabase)
 			$this->cleanDatabase();
@@ -36,12 +42,19 @@ class SzurubooruTestRunner implements ITestRunner
 		$testRunner->run();
 	}
 
+	private function printHelp()
+	{
+		readfile(__DIR__ . DIRECTORY_SEPARATOR . 'help.txt');
+	}
+
 	private function getOptions()
 	{
-		$options = getopt('cf:', ['clean', 'filter:', 'driver:']);
+		$options = getopt('cf:h', ['clean', 'filter:', 'driver:', 'help']);
 
 		$ret = new SzurubooruTestOptions;
 
+		$ret->help = (isset($options['h']) or isset($options['h']));
+
 		$ret->cleanDatabase = (isset($options['c']) or isset($options['clean']));
 
 		$ret->dbDriver = 'sqlite';

tests/help.txt

@@ -0,0 +1,18 @@
+Usage: php run-all.php [OPTIONS]
+
+Available options:
+
+-c, --clean             Clears the database. Used for upgrade testing.
+-d, --driver DRIVER     Sets database driver to DRIVER, where DRIVER can be
+                        sqlite or mysql.
+-f, --filter FILTER     Runs only tests matching given FILTER.
+-h, --help              Shows this help.
+
+Syntax of FILTER:
+
+CLASS           runs only tests from classes containing CLASS.
+CLASS::         same as above.
+::METHOD        runs only tests from methods containing METHOD.
+CLASS::METHOD   combination of CLASS and ::METHOD filters.
+
+Filters are case-insensitive.