From b2e295971ff9dce6552e717f542c056524d002c8 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Mon, 30 Oct 2017 13:45:46 +0100
Subject: Regression test for issue #4391.

---
 tests/unit/type/zset.tcl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/unit/type/zset.tcl b/tests/unit/type/zset.tcl
index 82f76befe..564825ae9 100644
--- a/tests/unit/type/zset.tcl
+++ b/tests/unit/type/zset.tcl
@@ -696,6 +696,10 @@ start_server {tags {"zset"}} {
         }
     }
 
+    test "ZSET commands don't accept the empty strings as valid score" {
+        assert_error "*not*float*" {r zadd myzset "" abc}
+    }
+
     proc stressers {encoding} {
         if {$encoding == "ziplist"} {
             # Little extra to allow proper fuzzing in the sorting stresser
-- 
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