初始化仓库

agent/cursor/cursor_concurrent_test.go

@@ -0,0 +1,40 @@
+package cursor
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"testing"
+)
+
+// TestAgent_StartSessionWorkDirRace exercises concurrent SetWorkDir + StartSession.
+// Without the fix, StartSession reads a.workDir without holding a.mu while
+// SetWorkDir writes it under the lock, which Go's -race detector flags as a
+// data race. With the fix, the field is captured inside the existing critical
+// section and no race is reported.
+//
+// newCursorSession only initialises the session struct; it does not spawn the
+// Cursor agent CLI until Send() is called, so this test runs without requiring
+// the binary on PATH.
+func TestAgent_StartSessionWorkDirRace(t *testing.T) {
+	a := &Agent{cmd: "agent", workDir: "/initial"}
+
+	var wg sync.WaitGroup
+	for i := 0; i < 50; i++ {
+		wg.Add(2)
+		go func(i int) {
+			defer wg.Done()
+			a.SetWorkDir(fmt.Sprintf("/path-%d", i))
+		}(i)
+		go func() {
+			defer wg.Done()
+			sess, err := a.StartSession(context.Background(), "")
+			if err != nil {
+				t.Errorf("StartSession: %v", err)
+				return
+			}
+			_ = sess.Close()
+		}()
+	}
+	wg.Wait()
+}