whatcanGOwrong

go/pkg/mod/github.com/go-delve/liner@v1.2.3-0.20231231155935-4726ab1d7f62/race_test.go

@@ -0,0 +1,45 @@
+//go:build race
+// +build race
+
+package liner
+
+import (
+	"io/ioutil"
+	"os"
+	"sync"
+	"testing"
+)
+
+func TestWriteHistory(t *testing.T) {
+	oldout := os.Stdout
+	defer func() { os.Stdout = oldout }()
+	oldin := os.Stdout
+	defer func() { os.Stdin = oldin }()
+
+	newinr, newinw, err := os.Pipe()
+	if err != nil {
+		t.Fatal(err)
+	}
+	os.Stdin = newinr
+	newoutr, newoutw, err := os.Pipe()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer newoutr.Close()
+	os.Stdout = newoutw
+
+	var wait sync.WaitGroup
+	wait.Add(1)
+	s := NewLiner()
+	go func() {
+		s.AppendHistory("foo")
+		s.AppendHistory("bar")
+		s.Prompt("")
+		wait.Done()
+	}()
+
+	s.WriteHistory(ioutil.Discard)
+
+	newinw.Close()
+	wait.Wait()
+}