added version ID for simpler comparison (#2439)

tests/ConstantsTest.php

@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests;
+
+use App\Constants;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Constants
+ */
+class ConstantsTest extends TestCase
+{
+    public function testBuild()
+    {
+        $version = Constants::VERSION;
+        $versionParts = explode('.', $version);
+        $major = (int) $versionParts[0];
+        $minor = (int) $versionParts[1];
+        $patch = isset($versionParts[2]) ? (int) $versionParts[2] : 0;
+
+        $expectedId = $major * 10000 + $minor * 100 + $patch;
+
+        self::assertEquals('1.14', Constants::VERSION, 'Invalid release number');
+        self::assertEquals('dev', Constants::STATUS, 'Invalid status');
+        self::assertEquals($expectedId, Constants::VERSION_ID, 'Invalid version ID');
+    }
+}