add test cases for decr decrby on missing key (#12070)

Minor test case addition for DECR and DECRBY.

Currently DECR and DECRBY do not have test case coverage for the
scenarios where they run on a non-existing key.

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/unit/type/incr.tcl b/tests/unit/type/incr.tcl
index a64f357ae..c09f2e8b2 100644
--- a/tests/unit/type/incr.tcl
+++ b/tests/unit/type/incr.tcl
@@ -13,6 +13,12 @@ start_server {tags {"incr"}} {
         r decr novar
     } {1}
 
+    test {DECR against key is not exist and incr} {
+        r del novar_not_exist
+        assert_equal {-1} [r decr novar_not_exist]
+        assert_equal {0} [r incr novar_not_exist]
+    }
+
     test {INCR against key originally set with SET} {
         r set novar 100
         r incr novar
@@ -64,6 +70,11 @@ start_server {tags {"incr"}} {
         r decrby novar 17179869185
     } {-1}
 
+    test {DECRBY against key is not exist} {
+        r del key_not_exist
+        assert_equal {-1} [r decrby key_not_exist 1]
+    }
+
     test {INCR uses shared objects in the 0-9999 range} {
         r set foo -1
         r incr foo