implement unlink command (#250)

implement unlink command

README.rst

@@ -223,7 +223,6 @@ generic
  * object
  * restore
  * touch
- * unlink
  * wait
 
 

fakeredis/_server.py

@@ -911,8 +911,7 @@ def swapdb(self, index1, index2):
     # Key commands
     # TODO: lots
 
-    @command((Key(),), (Key(),), name='del')
-    def del_(self, *keys):
+    def _delete(self, *keys):
         ans = 0
         done = set()
         for key in keys:
@@ -922,6 +921,14 @@ def del_(self, *keys):
                 ans += 1
         return ans
 
+    @command((Key(),), (Key(),), name='del')
+    def del_(self, *keys):
+        return self._delete(*keys)
+
+    @command((Key(),), (Key(),), name='unlink')
+    def unlink(self, *keys):
+        return self._delete(*keys)
+
     @command((Key(),), (Key(),))
     def exists(self, *keys):
         ret = 0

test_fakeredis.py

@@ -4016,6 +4016,12 @@ def test_script(self):
         result = script(args=[42])
         self.assertEqual(result, b'42')
 
+    @redis3_only
+    def test_unlink(self):
+        self.redis.set('foo', 'bar')
+        self.redis.unlink('foo')
+        self.assertIsNone(self.redis.get('foo'))
+
 
 class TestFakeRedis(unittest.TestCase):
     decode_responses = False

test_fakeredis_hypothesis.py

@@ -155,7 +155,7 @@ def commands(*args, **kwargs):
 
 # TODO: all expiry-related commands
 common_commands = (
-    commands(st.sampled_from(['del', 'persist', 'type']), keys)
+    commands(st.sampled_from(['del', 'persist', 'type', 'unlink']), keys)
     | commands(st.just('exists'), st.lists(keys))
     | commands(st.just('keys'), st.just('*'))
     # Disabled for now due to redis giving wrong answers