From 1ef49de83483e6f78bfe9c795a473ccfb29db150 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sat, 20 Aug 2022 01:04:02 +0900
Subject: [Bug #18955] format single character for `%c`

---
 spec/ruby/core/kernel/shared/sprintf.rb | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

(limited to 'spec/ruby/core/kernel/shared/sprintf.rb')

diff --git a/spec/ruby/core/kernel/shared/sprintf.rb b/spec/ruby/core/kernel/shared/sprintf.rb
index 84d472b0d1..59f5ab0036 100644
--- a/spec/ruby/core/kernel/shared/sprintf.rb
+++ b/spec/ruby/core/kernel/shared/sprintf.rb
@@ -289,16 +289,28 @@ describe :kernel_sprintf, shared: true do
         @method.call("%c", "a").should == "a"
       end
 
-      it "raises ArgumentError if argument is a string of several characters" do
-        -> {
-          @method.call("%c", "abc")
-        }.should raise_error(ArgumentError)
+      ruby_version_is ""..."3.2" do
+        it "raises ArgumentError if argument is a string of several characters" do
+          -> {
+            @method.call("%c", "abc")
+          }.should raise_error(ArgumentError)
+        end
+
+        it "raises ArgumentError if argument is an empty string" do
+          -> {
+            @method.call("%c", "")
+          }.should raise_error(ArgumentError)
+        end
       end
 
-      it "raises ArgumentError if argument is an empty string" do
-        -> {
-          @method.call("%c", "")
-        }.should raise_error(ArgumentError)
+      ruby_version_is "3.2" do
+        it "displays only the first character if argument is a string of several characters" do
+          @method.call("%c", "abc").should == "a"
+        end
+
+        it "displays no characters if argument is an empty string" do
+          @method.call("%c", "").should == ""
+        end
       end
 
       it "supports Unicode characters" do
-- 
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