fix: 修复写队列 busy 恢复、关闭安全、备份与配置构建问题

internal/config/config_test.go

@@ -48,6 +48,62 @@ func TestLoadAndValidate(t *testing.T) {
 	}
 }
 
+func TestLoadExplicitZeroGraceSeconds(t *testing.T) {
+	t.Parallel()
+	dir := t.TempDir()
+	path := filepath.Join(dir, "config.yaml")
+	body := "listen: \"127.0.0.1:0\"\ndata_dir: \"" + filepath.ToSlash(dir) + "\"\nlimits:\n  grace_seconds: 0\n"
+	if err := os.WriteFile(path, []byte(body), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	cfg, err := Load(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := cfg.Validate(); err != nil {
+		t.Fatal(err)
+	}
+	if cfg.Limits.GraceSeconds != 0 {
+		t.Fatalf("grace_seconds=%d, want 0", cfg.Limits.GraceSeconds)
+	}
+	if cfg.Limits.MaxBodyBytes != MaxBodyBytesCap {
+		t.Fatalf("omitted max_body_bytes=%d", cfg.Limits.MaxBodyBytes)
+	}
+}
+
+func TestValidateRejectsMaxFrameBytesTooLarge(t *testing.T) {
+	t.Parallel()
+	cfg := Default()
+	cfg.Limits.MaxFrameBytes = MaxFrameBytesCap + 1
+	err := cfg.Validate()
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(err.Error(), "max_frame_bytes") {
+		t.Fatalf("unexpected error: %v", err)
+	}
+}
+
+func TestLoadExplicitZeroMaxBodyBytesRejected(t *testing.T) {
+	t.Parallel()
+	dir := t.TempDir()
+	path := filepath.Join(dir, "config.yaml")
+	body := "listen: \"127.0.0.1:0\"\ndata_dir: \"" + filepath.ToSlash(dir) + "\"\nlimits:\n  max_body_bytes: 0\n"
+	if err := os.WriteFile(path, []byte(body), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	cfg, err := Load(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if cfg.Limits.MaxBodyBytes != 0 {
+		t.Fatalf("max_body_bytes=%d, want explicit 0", cfg.Limits.MaxBodyBytes)
+	}
+	if err := cfg.Validate(); err == nil || !strings.Contains(err.Error(), "max_body_bytes") {
+		t.Fatalf("want max_body_bytes error, got %v", err)
+	}
+}
+
 func TestValidateTrustedProxies(t *testing.T) {
 	t.Parallel()
 	cfg := Default()