1 files changed, 25 insertions, 0 deletions
diff --git a/src/internal/buildcfg/cfg_test.go b/src/internal/buildcfg/cfg_test.go
new file mode 100644
index 00000000000..9180441c28c
--- /dev/null
+++ b/src/internal/buildcfg/cfg_test.go
@@ -0,0 +1,25 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package buildcfg
+
+import (
+	"os"
+	"testing"
+)
+
+func TestConfigFlags(t *testing.T) {
+	os.Setenv("GOAMD64", "v1")
+	if goamd64() != 1 {
+		t.Errorf("Wrong parsing of GOAMD64=v1")
+	}
+	os.Setenv("GOAMD64", "v4")
+	if goamd64() != 4 {
+		t.Errorf("Wrong parsing of GOAMD64=v4")
+	}
+	os.Setenv("GOAMD64", "1")
+	if goamd64() != 1 {
+		t.Errorf("Wrong parsing of GOAMD64=1")
+	}
+}