feat: 完成源晶权限与经验系统并优化 me/admin 交互

backend/tests/experience_service_test.cc

@@ -0,0 +1,41 @@
+#include <catch2/catch_test_macros.hpp>
+
+#include "csp/db/sqlite_db.h"
+#include "csp/services/auth_service.h"
+#include "csp/services/experience_service.h"
+
+TEST_CASE("experience only increases on rating gains") {
+  auto db = csp::db::SqliteDb::OpenMemory();
+  csp::db::ApplyMigrations(db);
+  csp::db::SeedDemoData(db);
+
+  csp::services::AuthService auth(db);
+  const auto user = auth.Register("xp_user", "password123");
+
+  csp::services::ExperienceService xp(db);
+
+  const auto s0 = xp.GetSummary(user.user_id);
+  REQUIRE(s0.user_id == user.user_id);
+  REQUIRE(s0.experience >= 0);
+  const int base_exp = s0.experience;
+
+  db.Exec("UPDATE users SET rating=rating+10 WHERE id=" +
+          std::to_string(user.user_id));
+  const auto s1 = xp.GetSummary(user.user_id);
+  REQUIRE(s1.experience == base_exp + 10);
+
+  db.Exec("UPDATE users SET rating=rating-4 WHERE id=" +
+          std::to_string(user.user_id));
+  const auto s2 = xp.GetSummary(user.user_id);
+  REQUIRE(s2.experience == base_exp + 10);
+
+  db.Exec("UPDATE users SET rating=rating+3 WHERE id=" +
+          std::to_string(user.user_id));
+  const auto s3 = xp.GetSummary(user.user_id);
+  REQUIRE(s3.experience == base_exp + 13);
+
+  const auto rows = xp.ListHistory(user.user_id, 20);
+  REQUIRE(rows.size() >= 2);
+  REQUIRE(rows[0].xp_delta == 3);
+  REQUIRE(rows[1].xp_delta == 10);
+}