Added local file link provider

tests/units/ExternalLink/FileLinkProviderTest.php

@@ -0,0 +1,43 @@
+<?php
+
+require_once __DIR__.'/../Base.php';
+
+use Kanboard\ExternalLink\FileLinkProvider;
+
+class FileLinkProviderTest extends Base
+{
+    public function testGetName()
+    {
+        $attachmentLinkProvider = new FileLinkProvider($this->container);
+        $this->assertEquals('Local File', $attachmentLinkProvider->getName());
+    }
+
+    public function testGetType()
+    {
+        $attachmentLinkProvider = new FileLinkProvider($this->container);
+        $this->assertEquals('file', $attachmentLinkProvider->getType());
+    }
+
+    public function testGetDependencies()
+    {
+        $attachmentLinkProvider = new FileLinkProvider($this->container);
+        $this->assertEquals(array('related' => 'Related'), $attachmentLinkProvider->getDependencies());
+    }
+
+    public function testMatch()
+    {
+        $attachmentLinkProvider = new FileLinkProvider($this->container);
+
+        $attachmentLinkProvider->setUserTextInput('file:///tmp/test.txt');
+        $this->assertTrue($attachmentLinkProvider->match());
+
+        $attachmentLinkProvider->setUserTextInput('');
+        $this->assertFalse($attachmentLinkProvider->match());
+    }
+
+    public function testGetLink()
+    {
+        $attachmentLinkProvider = new FileLinkProvider($this->container);
+        $this->assertInstanceOf('\Kanboard\ExternalLink\FileLink', $attachmentLinkProvider->getLink());
+    }
+}