diff --git a/test/test_database.cpp b/test/test_database.cpp
index de5c004..b963d8b 100644
--- a/test/test_database.cpp
+++ b/test/test_database.cpp
@@ -1,6 +1,7 @@
 #define BOOST_TEST_MODULE database
 
 #include "../src/core/database.h"
+#include "../src/core/seller.h"
 
 #include <filesystem>
 
@@ -11,5 +12,46 @@ BOOST_AUTO_TEST_CASE(create_database)
 
     Database db(":memory:");
     BOOST_CHECK_NO_THROW(db.init());
+}
 
+BOOST_AUTO_TEST_CASE(store_seller_fail)
+{
+    Database db(":memory:");
+    db.init();
+    std::vector<Seller> sellers;
+    sellers.push_back({});
+    sellers.push_back({});
+    BOOST_CHECK_THROW(db.storeSellers(sellers), std::runtime_error);
+}
+BOOST_AUTO_TEST_CASE(store_sellers_succ)
+{
+    Database db(":memory:");
+    db.init();
+    std::vector<Seller> sellers;
+    Seller a{};
+    a.createUuid();
+    a.setSellerNo(1);
+    Seller b{};
+    b.createUuid();
+    b.setSellerNo(2);
+    BOOST_TEST(a.getUuid() != b.getUuid());
+    sellers.push_back(a);
+    sellers.push_back(b);
+    BOOST_CHECK_NO_THROW(db.storeSellers(sellers));
+}
+
+BOOST_AUTO_TEST_CASE(seller_states)
+{
+    Database db(":memory:");
+    db.init();
+    std::vector<Seller> sellers;
+    Seller a;
+    a.setSellerNo(3);
+    a.createUuid();
+    sellers.push_back(a);
+    std::cout << "Anzahl sellers: " << sellers.size() << "\n";
+    BOOST_TEST((sellers.at(0).getState() == Entity::State::NEW));
+    BOOST_TEST(db.storeSellers(sellers) == 1);
+    BOOST_TEST((sellers.at(0).getState() == Entity::State::CLEAN));
+    BOOST_TEST(db.storeSellers(sellers) == 0);
 }
\ No newline at end of file