test solidity-zokratos integration

truffle/contracts/VerifierProxy.sol

@@ -0,0 +1,23 @@
+pragma solidity ^0.5.4;
+pragma experimental ABIEncoderV2;
+
+import "./Structs.sol";
+import "./verifier.sol";
+
+
+contract VerifierProxy is Structs {
+    Verifier internal verifier;
+
+    constructor(Verifier ver) public {
+        verifier = ver;
+    }
+
+    // Truffle gives `UnimplementedFeatureError: Encoding struct from calldata is not yet supported.`
+    // that's why function is public and uses memory location modifier 
+    function isValid(Data memory data, Proof memory proof) public returns (bool) {
+        bytes memory payload = abi.encodeWithSelector(verifier.verifyTx.selector, proof, data);
+        (bool success, bytes memory r) = address(verifier).call(payload);
+        require(success);
+        return abi.decode(r, (bool));
+    }
+}