added tests

CMakeLists.txt

@@ -7,6 +7,30 @@ set(CMAKE_C_FLAGS_DEBUG "-g -O0 -fPIC" CACHE STRING "Debug flags" FORCE)
 
 include_directories(${sharedMemoryKeyDB_SOURCE_DIR})
 
+option(BUILD_TESTS "Build unit tests" ON)
+
+if (BUILD_TESTS)
+#    enable_testing()
+#
+#    include(FetchContent)
+#    FetchContent_Declare(
+#            googletest
+#            URL https://github.com/google/googletest/archive/refs/heads/main.zip
+#    )
+#    FetchContent_MakeAvailable(googletest)
+#
+#    add_executable(tests
+#            tests/test_1.cpp
+#    )
+#
+#    target_link_libraries(my_tests
+#            gtest_main
+#    )
+#
+#    include(GoogleTest)
+#    gtest_discover_tests(my_tests)
+endif()
+
 add_executable(sharedMemoryKeyDB
         main.cpp
         utils/toml/toml.hpp

tests/test_1.cpp

@@ -0,0 +1,65 @@
+//
+// Created by Kirill Zhukov on 20.04.2025.
+//
+
+
+
+TEST(SkipListTests, BasicOperations) {
+    std::string db_name = "test_db";
+    VersionManager version_manager(db_name);
+    LFSkipList<Hash128, std::string> table(version_manager);
+
+    table.insert(compute_hash128("a", 1), "apple");
+    table.insert(compute_hash128("b", 1), "banana");
+    table.insert(compute_hash128("c", 1), "cherry");
+
+    auto a = table.find(compute_hash128("a", 1));
+    auto b = table.find(compute_hash128("b", 1));
+    auto c = table.find(compute_hash128("c", 1));
+    auto d = table.find(compute_hash128("d", 1));
+
+    ASSERT_TRUE(a.has_value());
+    EXPECT_EQ(a.value(), "apple");
+
+    ASSERT_TRUE(b.has_value());
+    EXPECT_EQ(b.value(), "banana");
+
+    ASSERT_TRUE(c.has_value());
+    EXPECT_EQ(c.value(), "cherry");
+
+    ASSERT_FALSE(d.has_value());
+}
+
+TEST(VersionManagerTests, PersistenceAcrossRestarts) {
+    std::string db_name = "test_db";
+    {
+        VersionManager vm1(db_name);
+        (void)vm1.next_version();
+        (void)vm1.next_version();
+        (void)vm1.next_version();
+    }
+
+    VersionManager vm2(db_name);
+    uint64_t v4 = vm2.next_version();
+
+    ASSERT_GT(v4, 3u) << "Version did not persist correctly";
+}
+
+TEST(SSTableTests, WriteAndRead) {
+    std::string db_name = "test_db";
+    VersionManager version_manager(db_name);
+
+    LFSkipList<Hash128, std::string> table(version_manager);
+    table.insert(compute_hash128("dog", 3), "bark");
+    table.insert(compute_hash128("cat", 3), "meow");
+    table.insert(compute_hash128("cow", 3), "moo");
+
+    write_sstable_with_index(table, "test_sstable.dat");
+
+    LFSkipList<Hash128, std::string> loaded_table(version_manager);
+    read_sstable_with_mmap(loaded_table, "test_sstable.dat");
+
+    ASSERT_TRUE(loaded_table.find(compute_hash128("dog", 3)).has_value());
+    ASSERT_TRUE(loaded_table.find(compute_hash128("cat", 3)).has_value());
+    ASSERT_TRUE(loaded_table.find(compute_hash128("cow", 3)).has_value());
+}