Filter non compatible plugins

tests/units/Core/Plugin/DirectoryTest.php

@@ -0,0 +1,44 @@
+<?php
+
+use Kanboard\Core\Plugin\Directory;
+
+require_once __DIR__.'/../../Base.php';
+
+class DirectoryTest extends Base
+{
+    public function testIsCompatible()
+    {
+        $pluginDirectory = new Directory($this->container);
+        $this->assertFalse($pluginDirectory->isCompatible(array('compatible_version' => '1.0.29'), '1.0.28'));
+        $this->assertTrue($pluginDirectory->isCompatible(array('compatible_version' => '1.0.28'), '1.0.28'));
+        $this->assertTrue($pluginDirectory->isCompatible(array('compatible_version' => '1.0.28'), 'master.1234'));
+    }
+
+    public function testGetAvailablePlugins()
+    {
+        $plugins = array(
+            array(
+                'title' => 'Plugin A',
+                'compatible_version' => '1.0.30',
+                'remote_install' => true,
+            ),
+            array(
+                'title' => 'Plugin B',
+                'compatible_version' => '1.0.29',
+                'remote_install' => false,
+            ),
+        );
+
+        $this->container['httpClient']
+            ->expects($this->once())
+            ->method('getJson')
+            ->with('api_url')
+            ->will($this->returnValue($plugins));
+
+        $pluginDirectory = new Directory($this->container);
+        $availablePlugins = $pluginDirectory->getAvailablePlugins('api_url');
+
+        $this->assertCount(1, $availablePlugins);
+        $this->assertEquals('Plugin A', $availablePlugins[0]['title']);
+    }
+}