Greenkeeper/ethereumjs testrpc 4.0.1

package.json

@@ -68,7 +68,7 @@
     "copyfiles": "^1.2.0",
     "coveralls": "^2.13.1",
     "dirty-chai": "^1.2.2",
-    "ethereumjs-testrpc": "3.0.5",
+    "ethereumjs-testrpc": "4.0.1",
     "json-loader": "^0.5.4",
     "mocha": "^3.4.1",
     "npm-run-all": "^4.0.2",

src/0x.ts

@@ -199,8 +199,9 @@ export class ZeroEx {
         let msgHashHex;
         const nodeVersion = await this._web3Wrapper.getNodeVersionAsync();
         const isParityNode = utils.isParityNode(nodeVersion);
-        if (isParityNode) {
-            // Parity node adds the personalMessage prefix itself
+        const isTestRpc = utils.isTestRpc(nodeVersion);
+        if (isParityNode || isTestRpc) {
+            // Parity and TestRpc nodes add the personalMessage prefix itself
             msgHashHex = orderHash;
         } else {
             const orderHashBuff = ethUtil.toBuffer(orderHash);

src/utils/utils.ts

@@ -22,6 +22,9 @@ export const utils = {
     isParityNode(nodeVersion: string): boolean {
         return _.includes(nodeVersion, 'Parity');
     },
+    isTestRpc(nodeVersion: string): boolean {
+        return _.includes(nodeVersion, 'TestRPC');
+    },
     isValidOrderHash(orderHashHex: string): boolean {
         const isValid = /^0x[0-9A-F]{64}$/i.test(orderHashHex);
         return isValid;