feat: Porting wasm host function tests to new design

src/tests/libxrpl/tx/wasm/host_functions/VaultKeylet.cpp

@@ -0,0 +1,39 @@
+#include <xrpl/protocol/AccountID.h>
+#include <xrpl/protocol/Indexes.h>
+#include <xrpl/protocol/SeqProxy.h>
+#include <xrpl/tx/wasm/WasmCommon.h>
+
+#include <gtest/gtest.h>
+#include <helpers/Account.h>
+#include <helpers/TxTest.h>
+#include <tx/wasm/RealHostFixture.h>
+
+#include <expected>
+#include <iterator>
+
+namespace xrpl::test {
+
+struct VaultKeyletImpl : WasmImplTest
+{
+};
+
+TEST_F(VaultKeyletImpl, MatchesVaultFunction)
+{
+    auto const owner = Account{"owner"};
+    ledger.createAccount(owner, XRP(1000));
+
+    auto const expected = keylet::vault(owner.id(), SeqProxy::rawSequence(1u));
+    auto const expectedBytes = Bytes{std::begin(expected.key), std::end(expected.key)};
+    auto const result = host().vaultKeylet(owner.id(), 1u);
+    ASSERT_TRUE(result.has_value());
+    EXPECT_EQ(*result, expectedBytes);
+}
+
+TEST_F(VaultKeyletImpl, InvalidAccount)
+{
+    auto result = host().vaultKeylet(AccountID{}, 1u);
+    ASSERT_TRUE(!result.has_value());
+    EXPECT_EQ(result.error(), HostFunctionError::InvalidAccount);
+}
+
+}  // namespace xrpl::test