added plugin screen (#671)

tests/Plugin/PluginMetadataTest.php

@@ -0,0 +1,42 @@
+<?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\Plugin;
+
+use App\Plugin\PluginMetadata;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Plugin\PluginMetadata
+ */
+class PluginMetadataTest extends TestCase
+{
+    public function testEmptyObject()
+    {
+        $sut = new PluginMetadata();
+        $this->assertNull($sut->getDescription());
+        $this->assertNull($sut->getHomepage());
+        $this->assertNull($sut->getVersion());
+        $this->assertNull($sut->getKimaiVersion());
+    }
+
+    public function testGetterAndSetter()
+    {
+        $sut = new PluginMetadata();
+        $this->assertInstanceOf(PluginMetadata::class, $sut->setVersion('13.7'));
+        $this->assertInstanceOf(PluginMetadata::class, $sut->setHomepage('http://www.example.com'));
+        $this->assertInstanceOf(PluginMetadata::class, $sut->setDescription('foo bar'));
+        $this->assertInstanceOf(PluginMetadata::class, $sut->setKimaiVersion('1.0'));
+
+        $this->assertEquals('13.7', $sut->getVersion());
+        $this->assertEquals('http://www.example.com', $sut->getHomepage());
+        $this->assertEquals('foo bar', $sut->getDescription());
+        $this->assertEquals('1.0', $sut->getKimaiVersion());
+    }
+}