diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
new file mode 100644
index 0000000..cf23571
--- /dev/null
+++ b/tests/CMakeLists.txt
@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.10.0)
+project(test_presentation)
+include(FetchContent)
+if (MSVC)
+    add_compile_options(/utf-8)
+endif()
+FetchContent_Declare(
+  googletest
+  URL https://github.com/google/googletest/archive/03597a01ee50ed33e9dfd640b249b4be3799d395.zip
+)
+# For Windows: Prevent overriding the parent project's compiler/linker settings
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../include)
+
+include(CTest)
+enable_testing()
+
+add_executable(test_presentation test_app.cpp ../src/app.cpp)
+
+target_link_libraries(test_presentation gtest gmock gtest_main)
+include(GoogleTest)
+gtest_discover_tests(test_presentation)
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diff --git a/tests/test_app.cpp b/tests/test_app.cpp
new file mode 100644
index 0000000..d656884
--- /dev/null
+++ b/tests/test_app.cpp
@@ -0,0 +1,117 @@
+#include <gtest/gtest.h>
+#include "app.hpp"
+#include <vector>
+#include <string>
+
+namespace ocpm {
+
+TEST(PlanManagerTest, testQueryPlansNormalInput) {
+    PlanManager manager;
+    manager.loadSampleData();
+    PlanQueryRequest req;
+    req.status_filter = -1;
+    req.priority_min = 0;
+    req.keyword = "";
+    req.page = 1;
+    req.page_size = 10;
+    SortParam sort{"priority", SortDirection::DESC};
+    auto result = manager.queryPlans(req, sort);
+    EXPECT_EQ(result.size(), 5);
+    EXPECT_EQ(result[0].priority, 95);
+}
+
+TEST(PlanManagerTest, testQueryPlansBoundaryPagination) {
+    PlanManager manager;
+    manager.loadSampleData();
+    PlanQueryRequest req;
+    req.page = 3;
+    req.page_size = 2;
+    auto result = manager.queryPlans(req, SortParam{});
+    EXPECT_TRUE(result.empty());
+}
+
+TEST(PlanManagerTest, testGetPlanDetailValidId) {
+    PlanManager manager;
+    manager.loadSampleData();
+    auto plan = manager.getPlanDetail("PLAN-001");
+    EXPECT_EQ(plan.plan_name, "突击行动-甲");
+}
+
+TEST(PlanManagerTest, testGetPlanDetailInvalidId) {
+    PlanManager manager;
+    manager.loadSampleData();
+    EXPECT_THROW(manager.getPlanDetail("INVALID"), std::invalid_argument);
+}
+
+TEST(PlanManagerTest, testComparePlansIdentical) {
+    PlanManager manager;
+    manager.loadSampleData();
+    auto diffs = manager.comparePlans("PLAN-001", "PLAN-001");
+    EXPECT_EQ(diffs.size(), 1);
+    EXPECT_EQ(diffs[0], "(no differences)");
+}
+
+TEST(PlanManagerTest, testReconstructSuccess) {
+    PlanManager manager;
+    manager.loadSampleData();
+    ReconstructCommand cmd{"PLAN-001", {"mod1", "mod2"}};
+    auto result = manager.reconstruct(cmd);
+    EXPECT_TRUE(result.success);
+    EXPECT_EQ(result.new_version, "PLAN-001-v2");
+}
+
+TEST(PlanManagerTest, testReconstructFailure) {
+    PlanManager manager;
+    ReconstructCommand cmd{"NONEXIST", {}};
+    auto result = manager.reconstruct(cmd);
+    EXPECT_FALSE(result.success);
+}
+
+TEST(PlanManagerTest, testLoadSampleData) {
+    PlanManager manager;
+    manager.loadSampleData();
+    EXPECT_NO_THROW(manager.getPlanDetail("PLAN-005"));
+}
+
+TEST(DistributedPlanManagerTest, testAddRemoveNode) {
+    DistributedPlanManager mgr;
+    TopoNode node{"N1", "Test", 0, 0};
+    mgr.addNode(node);
+    mgr.removeNode("N1");
+    EXPECT_TRUE(mgr.isConnected());
+}
+
+TEST(DistributedPlanManagerTest, testIsConnectedGraph) {
+    DistributedPlanManager mgr;
+    mgr.loadSampleData();
+    EXPECT_TRUE(mgr.isConnected());
+}
+
+TEST(DispatchManagerTest, testDispatchPlanValidAssets) {
+    DispatchManager mgr;
+    mgr.loadSampleData();
+    int count = mgr.dispatchPlan("P1", {"ASSET-001", "ASSET-004"});
+    EXPECT_EQ(count, 2);
+}
+
+TEST(DispatchManagerTest, testGetAssetStatusOffline) {
+    DispatchManager mgr;
+    EXPECT_EQ(mgr.getAssetStatus("UNKNOWN"), AssetStatusCode::OFFLINE);
+}
+
+TEST(DispatchManagerTest, testGetAlertsFiltered) {
+    DispatchManager mgr;
+    mgr.loadSampleData();
+    AlertLevel filter = AlertLevel::ERROR;
+    auto alerts = mgr.getAlerts(&filter);
+    EXPECT_EQ(alerts.size(), 1);
+}
+
+TEST(DispatchManagerTest, testClearAlerts) {
+    DispatchManager mgr;
+    mgr.loadSampleData();
+    mgr.clearAlerts();
+    EXPECT_TRUE(mgr.getAlerts().empty());
+}
+
+} // namespace ocpm
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