From adfc1f1af3d41e3d1a7b10017cbeb81133ea3499 Mon Sep 17 00:00:00 2001
From: Nikita Sivukhin <sivukhin@turso.tech>
Date: Sun, 9 Feb 2025 22:01:33 +0400
Subject: [PATCH] extend TCL tests for COALESCE

---
 testing/coalesce.test | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/testing/coalesce.test b/testing/coalesce.test
index a8ecdc0e9..4a748c1ad 100755
--- a/testing/coalesce.test
+++ b/testing/coalesce.test
@@ -11,6 +11,18 @@ do_execsql_test coalesce-2 {
     select coalesce(NULL, NULL, 1);
 } {1}
 
+do_execsql_test coalesce-nested {
+    select coalesce(NULL, coalesce(NULL, NULL));
+} {}
+
+do_execsql_test coalesce-nested-2 {
+    select coalesce(NULL, coalesce(NULL, 2));
+    select coalesce(NULL, coalesce(1, 2));
+    select coalesce(0, coalesce(1, 2));
+} {2
+1
+0}
+
 do_execsql_test coalesce-null {
     select coalesce(NULL, NULL, NULL);
 } {}