diff --git a/src/contract/main.sol b/src/contract/main.sol
index aa644f3..4f400ad 100644
--- a/src/contract/main.sol
+++ b/src/contract/main.sol
@@ -2,4 +2,10 @@
 
 pragma solidity ^0.8;
 
-contract scoreStore {}
+contract scoreStore {
+    uint16 test = 0;
+
+    function up(uint16 plus) public {
+        test += plus;
+    }
+}
diff --git a/test/main.t.sol b/test/main.t.sol
new file mode 100644
index 0000000..bb58846
--- /dev/null
+++ b/test/main.t.sol
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8;
+
+import "src/contract/main.sol";
+import "forge-std/Test.sol";
+
+contract mainTest is Test, scoreStore {
+    function testUp() public {
+        up(2);
+        assertEq(test, 2);
+    }
+}