From 52f22aad818b5b5e19d93cf07344655f0f1ca45f Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Mon, 4 Feb 2019 16:03:48 +0000
Subject: Write failing preSign unit test

---
 packages/order-utils/test/signature_utils_test.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/packages/order-utils/test/signature_utils_test.ts b/packages/order-utils/test/signature_utils_test.ts
index 937382056..eab6aa636 100644
--- a/packages/order-utils/test/signature_utils_test.ts
+++ b/packages/order-utils/test/signature_utils_test.ts
@@ -99,6 +99,17 @@ describe('Signature utils', () => {
             );
             expect(isValidSignatureLocal).to.be.true();
         });
+
+        it.only('should return false if entry not found in `preSigned` mapping', async () => {
+            const preSignedSignature = '0x06';
+            const isValidSignatureLocal = await signatureUtils.isValidSignatureAsync(
+                provider,
+                dataHex,
+                preSignedSignature,
+                address,
+            );
+            expect(isValidSignatureLocal).to.be.true();
+        });
     });
     describe('#isValidECSignature', () => {
         const signature = {
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