From 09f9abff377ae118efbae4ebf6e49142930d7844 Mon Sep 17 00:00:00 2001
From: Benjamin Dos Santos <benjamin.dos-santos@nadeo.com>
Date: Wed, 11 Sep 2019 11:26:43 +0200
Subject: [PATCH 1/3] Add zrevrank

---
 src/M6Web/Component/RedisMock/RedisMock.php | 11 +++++++++++
 tests/units/RedisMock.php                   | 21 +++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/src/M6Web/Component/RedisMock/RedisMock.php b/src/M6Web/Component/RedisMock/RedisMock.php
index b5261af..04d770b 100644
--- a/src/M6Web/Component/RedisMock/RedisMock.php
+++ b/src/M6Web/Component/RedisMock/RedisMock.php
@@ -1048,6 +1048,17 @@ public function zrank($key, $member)
         return $this->returnPipedInfo($rank);
     }
 
+    public function zrevrank($key, $member)
+    {
+        $rank = $this->zrank($key, $member);
+        if ($rank === null) {
+            return $this->returnPipedInfo(null);
+        }
+
+        $revRank = count (self::$dataValues[$this->storage][$key]) - $rank - 1;
+        return $this->returnPipedInfo($revRank);
+    }
+
     public function zremrangebyscore($key, $min, $max) {
         if (!isset(self::$dataValues[$this->storage][$key]) || $this->deleteOnTtlExpired($key)) {
             return $this->returnPipedInfo(0);
diff --git a/tests/units/RedisMock.php b/tests/units/RedisMock.php
index 8b6b17c..b16556f 100644
--- a/tests/units/RedisMock.php
+++ b/tests/units/RedisMock.php
@@ -812,6 +812,27 @@ public function testZRank()
         $this->assert->variable($redisMock->zrank('invalid', 'whatever'))->isEqualTo(null);
     }
 
+    public function testZRevRank()
+    {
+        $redisMock = new Redis();
+        $redisMock->zadd('test', 4, 'test1');
+        $redisMock->zadd('test', 15, 'test2');
+        $redisMock->zadd('test', 2, 'test3');
+        $redisMock->zadd('test', 1, 'test4');
+        $redisMock->zadd('test', 30, 'test5');
+        $redisMock->zadd('test', 0, 'test6');
+
+        $this->assert->variable($redisMock->zrevrank('test', 'test5'))->isEqualTo(0);
+        $this->assert->variable($redisMock->zrevrank('test', 'test2'))->isEqualTo(1);
+        $this->assert->variable($redisMock->zrevrank('test', 'test1'))->isEqualTo(2);
+        $this->assert->variable($redisMock->zrevrank('test', 'test3'))->isEqualTo(3);
+        $this->assert->variable($redisMock->zrevrank('test', 'test4'))->isEqualTo(4);
+        $this->assert->variable($redisMock->zrevrank('test', 'test6'))->isEqualTo(5);
+
+        $this->assert->variable($redisMock->zrevrank('test', 'invalid'))->isEqualTo(null);
+        $this->assert->variable($redisMock->zrevrank('invalid', 'whatever'))->isEqualTo(null);
+    }
+
     public function testZRange()
     {
         $redisMock = new Redis();

From 332d41328c69056a48350c900f806dcb88544b62 Mon Sep 17 00:00:00 2001
From: Benjamin Dos Santos <benjamin.dos-santos@nadeo.com>
Date: Wed, 11 Sep 2019 11:32:48 +0200
Subject: [PATCH 2/3] update README.md

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 92c3c0d..a75ed7e 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,8 @@ Redis command                                    | Description
 **ZCARD** *key*                                  | Returns the sorted set cardinality (number of elements) of the sorted set stored at *key*
 **ZRANGE** *key* *start* *stop* *[withscores]*   | Returns the specified range of members in a sorted set
 **ZRANGEBYSCORE** *key* *min* *max* *options*    | Returns a range of members in a sorted set, by score
-**ZRANK** *key* *member*                         | Returns the rank of *member* in the sorted set stored at *key*
+**ZRANK** *key* *member*                         | Returns the rank of *member* in the sorted set stored at *key*, with the scores ordered from low to high
+**ZREVRANK** *key* *member*                      | Returns the rank of *member* in the sorted set stored at *key*, with the scores ordered from high to low
 **ZREM** *key* *member*                          | Removes one membner from a sorted set
 **ZREMRANGEBYSCORE** *key* *min* *max*           | Removes all members in a sorted set within the given scores
 **ZREVRANGE** *key* *start* *stop* *[withscores]*| Returns the specified range of members in a sorted set, with scores ordered from high to low

From f3239cfc59a9f43cccd4e9eb0993bcc39eff63f8 Mon Sep 17 00:00:00 2001
From: Benjamin Dos Santos <benjamin.dos-santos@nadeo.com>
Date: Wed, 11 Sep 2019 17:30:29 +0200
Subject: [PATCH 3/3] code style

---
 src/M6Web/Component/RedisMock/RedisMock.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/M6Web/Component/RedisMock/RedisMock.php b/src/M6Web/Component/RedisMock/RedisMock.php
index 04d770b..0bf4195 100644
--- a/src/M6Web/Component/RedisMock/RedisMock.php
+++ b/src/M6Web/Component/RedisMock/RedisMock.php
@@ -1055,7 +1055,8 @@ public function zrevrank($key, $member)
             return $this->returnPipedInfo(null);
         }
 
-        $revRank = count (self::$dataValues[$this->storage][$key]) - $rank - 1;
+        $revRank = count(self::$dataValues[$this->storage][$key]) - $rank - 1;
+        
         return $this->returnPipedInfo($revRank);
     }