feat: 补齐模块接口契约与管理 API 文档

internal/app/message/service_test.go

@@ -0,0 +1,25 @@
+package message
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"git.asio.asia/nixevol/NixMsg/internal/app/port"
+	"git.asio.asia/nixevol/NixMsg/internal/protocol"
+)
+
+func TestStubSubmitNotImplemented(t *testing.T) {
+	s := NewStub()
+	_, err := s.Submit(context.Background(), "a", port.ConnInfo{}, &protocol.Send{})
+	if !errors.Is(err, ErrNotImplemented) {
+		t.Fatalf("got %v", err)
+	}
+}
+
+func TestStubRecoverNoop(t *testing.T) {
+	s := NewStub()
+	if err := s.RecoverOnStart(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+}