From ef70c3bf50dbd0cc7c8171186794d41c7cd5b146 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Pedersen?=
 <bjorn.erik.pedersen@gmail.com>
Date: Sun, 2 Jan 2022 20:29:34 +0100
Subject: [PATCH] Race

---
 hugolib/integrationtest_builder.go | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/hugolib/integrationtest_builder.go b/hugolib/integrationtest_builder.go
index 315ee86ab66..b64f895eb7f 100644
--- a/hugolib/integrationtest_builder.go
+++ b/hugolib/integrationtest_builder.go
@@ -69,11 +69,23 @@ type IntegrationTestBuilder struct {
 
 	buildCount int
 	counters   *testCounters
-	logBuff    bytes.Buffer
+	logBuff    lockingBuffer
 
 	builderInit sync.Once
 }
 
+type lockingBuffer struct {
+	sync.Mutex
+	bytes.Buffer
+}
+
+func (b *lockingBuffer) Write(p []byte) (n int, err error) {
+	b.Lock()
+	n, err = b.Buffer.Write(p)
+	b.Unlock()
+	return
+}
+
 func (s *IntegrationTestBuilder) AssertLogContains(text string) {
 	s.Helper()
 	s.Assert(s.logBuff.String(), qt.Contains, text)