From 2743eee044edfd3dafc012e31f60ecf4ee0ce30f Mon Sep 17 00:00:00 2001
From: Amir Bandeali <abandeali1@gmail.com>
Date: Thu, 26 Jul 2018 16:30:44 -0700
Subject: Update checking for erc721 existence

---
 packages/contracts/test/utils/erc721_wrapper.ts | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'packages/contracts')

diff --git a/packages/contracts/test/utils/erc721_wrapper.ts b/packages/contracts/test/utils/erc721_wrapper.ts
index d023b4d02..0c12130a3 100644
--- a/packages/contracts/test/utils/erc721_wrapper.ts
+++ b/packages/contracts/test/utils/erc721_wrapper.ts
@@ -35,8 +35,6 @@ export class ERC721Wrapper {
                     artifacts.DummyERC721Token,
                     this._provider,
                     txDefaults,
-                    constants.DUMMY_TOKEN_NAME,
-                    constants.DUMMY_TOKEN_SYMBOL,
                 ),
             );
         }
@@ -81,7 +79,8 @@ export class ERC721Wrapper {
     }
     public async doesTokenExistAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
         const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const doesExist = await tokenContract.exists.callAsync(tokenId);
+        const owner = await tokenContract.ownerOf.callAsync(tokenId);
+        const doesExist = owner !== constants.NULL_ADDRESS;
         return doesExist;
     }
     public async approveProxyAsync(tokenAddress: string, tokenId: BigNumber): Promise<void> {
-- 
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