Add Proxies from OpenZeppelin SDK (#2335)

test/proxy/UpgradeableProxy.test.js

@@ -0,0 +1,15 @@
+const { accounts, contract } = require('@openzeppelin/test-environment');
+
+const shouldBehaveLikeUpgradeableProxy = require('./UpgradeableProxy.behaviour');
+
+const UpgradeableProxy = contract.fromArtifact('UpgradeableProxy');
+
+describe('UpgradeableProxy', function () {
+  const [proxyAdminOwner] = accounts;
+
+  const createProxy = async function (implementation, _admin, initData, opts) {
+    return UpgradeableProxy.new(implementation, initData, opts);
+  };
+
+  shouldBehaveLikeUpgradeableProxy(createProxy, undefined, proxyAdminOwner);
+});