From d056b13e1495b136bb138cc65c4e311b458db380 Mon Sep 17 00:00:00 2001
From: Klaus Weidenbach <Klaus.Weidenbach@gmx.net>
Date: Sat, 13 May 2017 00:16:50 +0200
Subject: :construction_worker::white_check_mark: Documentation
 Permissions.php.

Also add some phpunit tests for this class, but there are some problems
yet with mocking static functions.
---
 Zotlabs/Access/Permissions.php        | 158 +++++++++++++++++++++++-----------
 tests/unit/Access/PermissionsTest.php | 148 +++++++++++++++++++++++++++++++
 2 files changed, 254 insertions(+), 52 deletions(-)
 create mode 100644 tests/unit/Access/PermissionsTest.php

diff --git a/Zotlabs/Access/Permissions.php b/Zotlabs/Access/Permissions.php
index d51e4d0ea..74286934f 100644
--- a/Zotlabs/Access/Permissions.php
+++ b/Zotlabs/Access/Permissions.php
@@ -1,45 +1,52 @@
 <?php
 
-
 namespace Zotlabs\Access;
 
 use Zotlabs\Lib as Zlib;
 
+/**
+ * @brief Extensible permissions.
+ *
+ * To add new permissions, add to the list of $perms below, with a simple description.
+ *
+ * Also visit PermissionRoles.php and add to the $ret['perms_connect'] property for any role
+ * if this permission should be granted to new connections.
+ *
+ * Next look at PermissionRoles::new_custom_perms() and provide a handler for updating custom
+ * permission roles. You will want to set a default PermissionLimit for each channel and also
+ * provide a sane default for any existing connections. You may or may not wish to provide a
+ * default auto permission. If in doubt, leave this alone as custom permissions by definition
+ * are the responsibility of the channel owner to manage. You just don't want to create any
+ * suprises or break things so you have an opportunity to provide sane settings.
+ *
+ * Update the version here and in PermissionRoles.
+ *
+ *
+ * Permissions with 'view' in the name are considered read permissions. Anything
+ * else requires authentication. Read permission limits are PERMS_PUBLIC and anything else
+ * is given PERMS_SPECIFIC.
+ *
+ * PermissionLimits::Std_limits() retrieves the standard limits. A permission role
+ * MAY alter an individual setting after retrieving the Std_limits if you require
+ * something different for a specific permission within the given role.
+ *
+ */
 class Permissions {
 
-	/**
-	 * Extensible permissions.
-	 * To add new permissions, add to the list of $perms below, with a simple description.
-	 *
-	 * Also visit PermissionRoles.php and add to the $ret['perms_connect'] property for any role
-	 * if this permission should be granted to new connections.
-	 *
-	 * Next look at PermissionRoles::new_custom_perms() and provide a handler for updating custom 
-	 * permission roles. You will want to set a default PermissionLimit for each channel and also
-	 * provide a sane default for any existing connections. You may or may not wish to provide a
-	 * default auto permission. If in doubt, leave this alone as custom permissions by definition
-	 * are the responsibility of the channel owner to manage. You just don't want to create any 
-	 * suprises or break things so you have an opportunity to provide sane settings. 
-	 *
-	 * Update the version here and in PermissionRoles
-	 *
-	 *
-	 * Permissions with 'view' in the name are considered read permissions. Anything
-	 * else requires authentication. Read permission limits are PERMS_PUBLIC and anything else
-	 * is given PERMS_SPECIFIC.
-	 *
-	 * PermissionLimits::Std_limits() retrieves the standard limits. A permission role
-	 * MAY alter an individual setting after retrieving the Std_limits if you require
-	 * something different for a specific permission within the given role.  
-	 *
-	 */
-
 	static public function version() {
 		// This must match the version in PermissionRoles.php before permission updates can run.
 		return 2;
 	}
 
-
+	/**
+	 * @brief Return an array with Permissions.
+	 *
+	 * @hooks permissions_list
+	 *   * \e array \b permissions
+	 *   * \e string \b filter
+	 * @param string $filter (optional) only passed to hook permission_list
+	 * @return Associative array with permissions and short description.
+	 */
 	static public function Perms($filter = '') {
 
 		$perms = [
@@ -63,18 +70,27 @@ class Permissions {
 			'delegate'      => t('Can administer my channel')
 		];
 
-		$x = array('permissions' => $perms, 'filter' => $filter);
-		call_hooks('permissions_list',$x);
-		return($x['permissions']);
+		$x = [
+			'permissions' => $perms,
+			'filter' => $filter
+		];
+		call_hooks('permissions_list', $x);
 
+		return($x['permissions']);
 	}
 
+	/**
+	 * @brief Perms from the above list that are blocked from anonymous observers.
+	 *
+	 * e.g. you must be authenticated.
+	 *
+	 * @hooks write_perms
+	 *   * \e array \b permissions
+	 * @return Associative array with permissions and short description.
+	 */
 	static public function BlockedAnonPerms() {
 
-		// Perms from the above list that are blocked from anonymous observers.
-		// e.g. you must be authenticated.
-
-		$res = array();
+		$res = [];
 		$perms = PermissionLimits::Std_limits();
 		foreach($perms as $perm => $limit) {
 			if($limit != PERMS_PUBLIC) {
@@ -82,17 +98,22 @@ class Permissions {
 			}
 		}
 
-		$x = array('permissions' => $res);
-		call_hooks('write_perms',$x);
-		return($x['permissions']);
+		$x = ['permissions' => $res];
+		call_hooks('write_perms', $x);
 
+		return($x['permissions']);
 	}
 
-	// converts [ 0 => 'view_stream', ... ]
-	// to [ 'view_stream' => 1 ]
-	// for any permissions in $arr;
-	// Undeclared permissions are set to 0
-
+	/**
+	 * @brief Converts indexed perms array to associative perms array.
+	 *
+	 * Converts [ 0 => 'view_stream', ... ]
+	 * to [ 'view_stream' => 1 ] for any permissions in $arr;
+	 * Undeclared permissions which exist in Perms() are added and set to 0.
+ 	 *
+	 * @param array $arr
+	 * @return array
+	 */
 	static public function FilledPerms($arr) {
 		if(is_null($arr)) {
 			btlogger('FilledPerms: null');
@@ -101,15 +122,26 @@ class Permissions {
 		$everything = self::Perms();
 		$ret = [];
 		foreach($everything as $k => $v) {
-			if(in_array($k,$arr))
+			if(in_array($k, $arr))
 				$ret[$k] = 1;
 			else
 				$ret[$k] = 0;
 		}
-		return $ret;
 
+		return $ret;
 	}
 
+	/**
+	 * @brief Convert perms array to indexed array.
+	 *
+	 * Converts [ 'view_stream' => 1 ] for any permissions in $arr
+	 * to [ 0 => ['name' => 'view_stream', 'value' => 1], ... ]
+	 *
+	 * @param array $arr associative perms array 'view_stream' => 1
+	 * @return Indexed array with elements that look like
+	 *   * \e string \b name the perm name (e.g. view_stream)
+	 *   * \e int \b value the value of the perm (e.g. 1)
+	 */
 	static public function OPerms($arr) {
 		$ret = [];
 		if($arr) {
@@ -120,7 +152,12 @@ class Permissions {
 		return $ret;
 	}
 
-
+	/**
+	 * @brief
+	 *
+	 * @param int $channel_id
+	 * @return boolean|array
+	 */
 	static public function FilledAutoperms($channel_id) {
 		if(! intval(get_pconfig($channel_id,'system','autoperms')))
 			return false;
@@ -137,16 +174,33 @@ class Permissions {
 		return $arr;
 	}
 
-	static public function PermsCompare($p1,$p2) {
+	/**
+	 * @brief Compares that all Permissions from $p1 exist also in $p2.
+	 *
+	 * @param array $p1 The perms that have to exist in $p2
+	 * @param array $p2 The perms to compare against
+	 * @return boolean true if all perms from $p1 exist also in $p2
+	 */
+	static public function PermsCompare($p1, $p2) {
 		foreach($p1 as $k => $v) {
-			if(! array_key_exists($k,$p2))
+			if(! array_key_exists($k, $p2))
 				return false;
+
 			if($p1[$k] != $p2[$k])
 				return false;
 		}
+
 		return true;
 	}
 
+	/**
+	 * @brief
+	 *
+	 * @param int $channel_id A channel id
+	 * @return associative array
+	 *   * \e array \b perms Permission array
+	 *   * \e int \b automatic 0 or 1
+	 */
 	static public function connect_perms($channel_id) {
 
 		$my_perms = [];
@@ -155,7 +209,7 @@ class Permissions {
 
 		// If a default permcat exists, use that
 
-		$pc = ((feature_enabled($channel_id,'permcats')) ? get_pconfig($channel_id,'system','default_permcat') : 'default');		
+		$pc = ((feature_enabled($channel_id,'permcats')) ? get_pconfig($channel_id,'system','default_permcat') : 'default');
 		if(! in_array($pc, [ '','default' ])) {
 			$pcp = new Zlib\Permcat($channel_id);
 			$permcat = $pcp->fetch($pc);
@@ -167,7 +221,7 @@ class Permissions {
 		}
 
 		// look up the permission role to see if it specified auto-connect
-		// and if there was no permcat or a default permcat, set the perms 
+		// and if there was no permcat or a default permcat, set the perms
 		// from the role
 
 		$role = get_pconfig($channel_id,'system','permissions_role');
@@ -195,7 +249,7 @@ class Permissions {
 		}
 
 		// If we reached this point with no permissions, the channel is using
-		// custom perms but they are not automatic. They will be stored in abconfig with 
+		// custom perms but they are not automatic. They will be stored in abconfig with
 		// the channel's channel_hash (the 'self' connection).
 
 		if(! $my_perms) {
diff --git a/tests/unit/Access/PermissionsTest.php b/tests/unit/Access/PermissionsTest.php
new file mode 100644
index 000000000..93c641fb1
--- /dev/null
+++ b/tests/unit/Access/PermissionsTest.php
@@ -0,0 +1,148 @@
+<?php
+/*
+ * Copyright (c) 2017 Hubzilla
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+namespace Zotlabs\Tests\Unit\Access;
+
+use Zotlabs\Tests\Unit\UnitTestCase;
+use Zotlabs\Access\Permissions;
+
+/**
+ * @brief Unit Test case for Permissions class.
+ *
+ * @covers Zotlabs\Access\Permissions
+ */
+class PermissionsTest extends UnitTestCase {
+
+	/**
+	 * @dataProvider FilledPermsProvider
+	 */
+	public function testFilledPerms($permarr, $expected) {
+		$this->markTestIncomplete(
+			'Need to mock static function Permissions::Perms() ...'
+		);
+		//$this->assertEquals($expected, Permissions::FilledPerms($permarr));
+
+/*		$perms = $this->getMockBuilder(Permissions::class)
+			->setMethods(['Perms'])
+			->getMock();
+		$perms->expects($this->once())
+			->method('Perms');
+		// still calls the static self::Perms()
+		$perms->FilledPerms($permarr);
+*/
+	}
+	public function FilledPermsProvider() {
+		return [
+				'empty' => [
+						[],
+						['perm1' => 0, 'perm2' => 0]
+				],
+				'valild' => [
+						[['perm1' => 1]],
+						['perm1' => 1, 'perm2' => 0]
+				]
+		];
+	}
+/*	public function testFilledPermsNull() {
+		// need to mock global function btlogger();
+		Permissions::FilledPerms(null);
+	}
+*/
+	/**
+	 * @dataProvider OPermsProvider
+	 *
+	 * @param array $permarr
+	 * @param array $expected
+	 */
+	public function testOPerms($permarr, $expected) {
+		$this->assertEquals($expected, Permissions::OPerms($permarr));
+	}
+	/**
+	 * @return Associative array with test values for OPerms()
+	 *   * \e array Array to test
+	 *   * \e array Expect array
+	 */
+	public function OPermsProvider() {
+		return [
+				'empty' => [
+						[],
+						[]
+				],
+				'valid' => [
+						['perm1' => 1, 'perm2' => 0],
+						[['name' => 'perm1', 'value' => 1], ['name' => 'perm2', 'value' => 0]]
+				],
+				'null array' => [
+						null,
+						[]
+				]
+		];
+	}
+
+
+	/**
+	 * @dataProvider permsCompareProvider
+	 *
+	 * @param array $p1
+	 * @param array $p2
+	 * @param boolean $expectedresult
+	 */
+	public function testPermsCompare($p1, $p2, $expectedresult) {
+		$this->assertEquals($expectedresult, Permissions::PermsCompare($p1, $p2));
+	}
+	/**
+	 * @return Associative array with test values for PermsCompare()
+	 *   * \e array 1st array
+	 *   * \e array 2nd array
+	 *   * \e boolean expected result for the test
+	 */
+	public function permsCompareProvider() {
+		return [
+				'equal' => [
+						['perm1' => 1, 'perm2' => 0],
+						['perm1' => 1, 'perm2' => 0],
+						true
+				],
+				'different values' => [
+						['perm1' => 1, 'perm2' => 0],
+						['perm1' => 0, 'perm2' => 1],
+						false
+				],
+				'different order' => [
+						['perm1' => 1, 'perm2' => 0],
+						['perm2' => 0, 'perm1' => 1],
+						true
+				],
+				'partial first in second' => [
+						['perm1' => 1],
+						['perm1' => 1, 'perm2' => 0],
+						true
+				],
+				'partial second in first' => [
+						['perm1' => 1, 'perm2' => 0],
+						['perm1' => 1],
+						false
+				]
+		];
+	}
+}
\ No newline at end of file
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