diff --git a/Zotlabs/Lib/PermissionDescription.php b/Zotlabs/Lib/PermissionDescription.php
index b6c6dd29d..51d5f890d 100644
--- a/Zotlabs/Lib/PermissionDescription.php
+++ b/Zotlabs/Lib/PermissionDescription.php
@@ -12,22 +12,25 @@ require_once("include/text.php");
  * permission settings for an item with an empty ACL.
  * i.e the caption, icon, and tooltip for the no-ACL option in the ACL dialog.
  */
-class PermissionDescription  {
+class PermissionDescription {
 
 	private $global_perm;
 	private $channel_perm;
 	private $fallback_description;
-	
+
 	/**
 	 * Constructor is private.
-	 * Use static methods fromGlobalPermission(), fromStandalonePermission(), or fromDescription()
-	 * to create instances.
+	 * Use static methods fromGlobalPermission(), fromStandalonePermission(),
+	 * or fromDescription() to create instances.
+	 *
+	 * @internal
+	 * @param int $global_perm
+	 * @param int $channel_perm
+	 * @param string $description (optional) default empty
 	 */
 	private function __construct($global_perm, $channel_perm, $description = '') {
-
 		$this->global_perm  = $global_perm;
 		$this->channel_perm = $channel_perm;
-		
 		$this->fallback_description = ($description  == '') ? t('Visible to your default audience') : $description;
 	}
 
@@ -43,23 +46,22 @@ class PermissionDescription  {
 		return new PermissionDescription('', 0x80000, $description);
 	}
 
-
 	/**
 	 * Use this method only if the interpretation of an empty ACL doesn't fall back to a global
 	 * default permission. You should pass one of the constants from boot.php - PERMS_PUBLIC,
 	 * PERMS_NETWORK etc.
-	 * 
+	 *
 	 * @param  integer $perm - a single enumerated constant permission - PERMS_PUBLIC, PERMS_NETWORK etc.
 	 * @return a new instance of PermissionDescription
 	 */
 	public static function fromStandalonePermission($perm) {
 
 		$result = new PermissionDescription('', $perm);
-		
-		$checkPerm = $this->get_permission_description();
-		if ($checkPerm == $this->fallback_description) {
+
+		$checkPerm = $result->get_permission_description();
+		if($checkPerm == $result->fallback_description) {
 			$result = null;
-			logger('null PermissionDescription from unknown standalone permission: ' . $perm ,LOGGER_DEBUG, LOG_ERROR);
+			logger('null PermissionDescription from unknown standalone permission: ' . $perm, LOGGER_DEBUG, LOG_ERR);
 		}
 
 		return $result;
@@ -67,9 +69,9 @@ class PermissionDescription  {
 
 	/**
 	 * This is the preferred way to create a PermissionDescription, as it provides the most details.
-	 * Use this method if you know an empty ACL will result in one of the global default permissions 
+	 * Use this method if you know an empty ACL will result in one of the global default permissions
 	 * being used, such as channel_r_stream (for which you would pass 'view_stream').
-	 * 
+	 *
 	 * @param  string $permname - a key for the global perms array from get_perms() in permissions.php,
 	 *         e.g. 'view_stream', 'view_profile', etc.
 	 * @return a new instance of PermissionDescription
@@ -80,19 +82,19 @@ class PermissionDescription  {
 
 		$global_perms = \Zotlabs\Access\Permissions::Perms();
 
-		if (array_key_exists($permname, $global_perms)) {
+		if(array_key_exists($permname, $global_perms)) {
 
-			$channelPerm = \Zotlabs\Access\PermissionLimits::Get(\App::$channel['channel_id'],$permname);
+			$channelPerm = \Zotlabs\Access\PermissionLimits::Get(\App::$channel['channel_id'], $permname);
 
 			$result = new PermissionDescription('', $channelPerm);
 		} else {
 			// The acl dialog can handle null arguments, but it shouldn't happen
-			logger('null PermissionDescription from unknown global permission: ' . $permname ,LOGGER_DEBUG, LOG_ERROR);
+			logger('null PermissionDescription from unknown global permission: ' . $permname, LOGGER_DEBUG, LOG_ERR);
 		}
+
 		return $result;
 	}
 
-
 	/**
 	 * Gets a localized description of the permission, or a generic message if the permission
 	 * is unknown.
@@ -101,8 +103,7 @@ class PermissionDescription  {
 	 */
 	public function get_permission_description() {
 
-		switch($this->channel_perm) {			
-
+		switch($this->channel_perm) {
 			case 0:              return t('Only me');
 			case PERMS_PUBLIC:   return t('Public');
 			case PERMS_NETWORK:  return t('Anybody in the $Projectname network');
@@ -117,19 +118,18 @@ class PermissionDescription  {
 
 	/**
 	 * Returns an icon css class name if an appropriate one is available, e.g. "fa-globe" for Public,
-	 * otherwise returns empty string. 
+	 * otherwise returns empty string.
 	 *
 	 * @return string icon css class name (often FontAwesome)
 	 */
 	public function get_permission_icon() {
 
-		switch($this->channel_perm) {			
-
+		switch($this->channel_perm) {
 			case 0:/* only me */ return 'fa-eye-slash';
 			case PERMS_PUBLIC:   return 'fa-globe';
 			case PERMS_NETWORK:  return 'fa-share-alt-square'; // fa-share-alt-square is very similiar to the hubzilla logo, but we should create our own logo class to use
-			case PERMS_SITE:     return 'fa-sitemap'; 
-			case PERMS_CONTACTS: return 'fa-group'; 
+			case PERMS_SITE:     return 'fa-sitemap';
+			case PERMS_CONTACTS: return 'fa-group';
 			case PERMS_SPECIFIC: return 'fa-list';
 			case PERMS_AUTHED:   return '';
 			case PERMS_PENDING:  return '';
@@ -137,7 +137,6 @@ class PermissionDescription  {
 		}
 	}
 
-
 	/**
 	 * Returns a localized description of where the permission came from, if this is known.
 	 * If it's not know, or if the permission is standalone and didn't come from a default
@@ -147,8 +146,7 @@ class PermissionDescription  {
 	*/
 	public function get_permission_origin_description() {
 
-		switch($this->global_perm) {			
-
+		switch($this->global_perm) {
 			case PERMS_R_STREAM:  return t('This is your default setting for the audience of your normal stream, and posts.');
 			case PERMS_R_PROFILE: return t('This is your default setting for who can view your default channel profile');
 			case PERMS_R_ABOOK:   return t('This is your default setting for who can view your connections');
diff --git a/tests/unit/Lib/PermissionDescriptionTest.php b/tests/unit/Lib/PermissionDescriptionTest.php
new file mode 100644
index 000000000..b1da5a0fd
--- /dev/null
+++ b/tests/unit/Lib/PermissionDescriptionTest.php
@@ -0,0 +1,110 @@
+<?php
+/*
+ * Copyright (c) 2016 Hubzilla
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+// Global namespace for fully qualified \App class.
+namespace {
+	// General channel permissions in boot.php
+	// 0 = Only you
+	define ( 'PERMS_PUBLIC'     , 0x0001 ); // anybody
+	define ( 'PERMS_NETWORK'    , 0x0002 ); // anybody in this network
+	define ( 'PERMS_SITE'       , 0x0004 ); // anybody on this site
+	define ( 'PERMS_CONTACTS'   , 0x0008 ); // any of my connections
+	define ( 'PERMS_SPECIFIC'   , 0x0080 ); // only specific connections
+	define ( 'PERMS_AUTHED'     , 0x0100 ); // anybody authenticated (could include visitors from other networks)
+	define ( 'PERMS_PENDING'    , 0x0200 ); // any connections including those who haven't yet been approved
+	// log levels in boot.php
+	define ( 'LOGGER_DEBUG',           2 );
+
+	// Stub global fully qualified \App class for static function calls
+	class App {
+		// Stub get_hostname()
+		public static function get_hostname() {
+			return 'phpunit';
+		}
+	}
+}
+
+// Stub global functions used in PermissionDescription with the help of
+// PHP's namespace resolution rules.
+namespace Zotlabs\Lib {
+	// Stub global translate function t()
+	function t($s) {
+		return $s;
+	}
+	// Stub global log function logger()
+	function logger($msg, $level = LOGGER_NORMAL, $priority = LOG_INFO) {
+		// doesn't matter
+	}
+}
+
+// regular namespace for this unit test
+namespace Zotlabs\Tests\Unit\Lib {
+
+	use Zotlabs\Tests\Unit\UnitTestCase;
+	use Zotlabs\Lib\PermissionDescription;
+
+	/**
+	 * @brief Unit Test case for ConnectionPool class.
+	 */
+	class PermissionDescriptionTest extends UnitTestCase {
+
+		public function testFromDescription() {
+			$permDesc = PermissionDescription::fromDescription('test');
+			$permDesc2 = PermissionDescription::fromDescription('test');
+			$permDesc3 = PermissionDescription::fromDescription('test2');
+
+			$this->assertEquals($permDesc, $permDesc2);
+			$this->assertNotEquals($permDesc, $permDesc3);
+		}
+
+		public function testFromStandalonePermission() {
+			$permDescUnknown = PermissionDescription::fromStandalonePermission(-1);
+			$permDescSelf = PermissionDescription::fromStandalonePermission(0);
+
+			$this->assertNull($permDescUnknown);
+			$this->assertNotNull($permDescSelf);
+		}
+
+		public function testFromGlobalPermission() {
+			//$permDesc = PermissionDescription::fromGlobalPermission('view_profile');
+
+			$this->markTestIncomplete(
+				'For this test we need more stubs...'
+			);
+		}
+
+		public function testGetPermissionDescription() {
+
+			// fromStandalonePermission uses get_permission_description(), so that will not help
+			//$permDescSelf = PermissionDescription::fromStandalonePermission(0);
+			//$permDescPublic = PermissionDescription::fromStandalonePermission(PERMS_PUBLIC);
+
+			$this->markTestIncomplete(
+				'For this test we need a mock of PermissionDescription...'
+			);
+			//$permDescSelf =
+			//$this->assertEquals($permDescSelf->, 'Only me');
+			//$this->assertEquals($permDescPublic, 'Public');
+		}
+	}
+}