update test contract

packages/snfoundry/contracts/src/test/TestContract.cairo

@@ -1,3 +1,4 @@
+use contracts::YourContract::{IYourContractDispatcher, IYourContractDispatcherTrait};
 use openzeppelin_utils::serde::SerializedAppend;
 use snforge_std::{declare, ContractClassTrait, DeclareResultTrait};
 use starknet::{ContractAddress, contract_address_const};
@@ -15,4 +16,16 @@ fn deploy_contract(name: ByteArray) -> ContractAddress {
 }
 
 #[test]
-fn test_deployment_values() {}
+fn test_deployment_values() {
+    let contract_address = deploy_contract("YourContract");
+
+    let dispatcher = IYourContractDispatcher { contract_address };
+
+    let current_greeting = dispatcher.greeting();
+    let expected_greeting: ByteArray = "Building Unstoppable Apps!!!";
+    assert(current_greeting == expected_greeting, 'Should have the right message');
+
+    let new_greeting: ByteArray = "Learn Scaffold-Stark 2! :)";
+    dispatcher.set_greeting(new_greeting.clone(), 0); // we transfer 0 eth
+    assert(dispatcher.greeting() == new_greeting, 'Should allow set new message');
+}