From 4e340e46770157538e5838e1f1cdb542830c3a44 Mon Sep 17 00:00:00 2001
From: Gabriel Baraldi <baraldigabriel@gmail.com>
Date: Thu, 9 Jan 2025 19:22:36 -0300
Subject: [PATCH] Add test

---
 test/iobuffer.jl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/iobuffer.jl b/test/iobuffer.jl
index 933662f7e41d1..a9d58f4b7871e 100644
--- a/test/iobuffer.jl
+++ b/test/iobuffer.jl
@@ -399,3 +399,9 @@ end
     io = IOBuffer(data)
     @test read(io) == data
 end
+
+@testset "Writing Char to full buffer" begin
+    io = IOBuffer(;maxsize=1)
+    write(io, 'a')
+    @test write(io, 'a') == 0
+end