From 2117b4e0c87df277f5e8df54e8df922bdf19c298 Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Thu, 25 May 2017 12:23:13 +0200
Subject: Use expect.to.throw

---
 test/0x.js.ts | 28 ++++------------------------
 1 file changed, 4 insertions(+), 24 deletions(-)

diff --git a/test/0x.js.ts b/test/0x.js.ts
index 2c4471e0f..09266018b 100644
--- a/test/0x.js.ts
+++ b/test/0x.js.ts
@@ -21,12 +21,7 @@ describe('ZeroEx library', () => {
                     r: signature.r,
                     s: signature.s,
                 };
-                try {
-                    const isValid = ZeroEx.isValidSignature(data, malformedSignature, address);
-                    throw new Error('isValidSignature should have thrown');
-                } catch (err) {
-                    // continue
-                }
+                expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw();
             });
             it('r lacks 0x prefix', () => {
                 const malformedR = signature.r.replace('0x', '');
@@ -35,12 +30,7 @@ describe('ZeroEx library', () => {
                     r: malformedR,
                     s: signature.s,
                 };
-                try {
-                    const isValid = ZeroEx.isValidSignature(data, malformedSignature, address);
-                    throw new Error('isValidSignature should have thrown');
-                } catch (err) {
-                    // continue
-                }
+                expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw();
             });
             it('r is too short', () => {
                 const malformedR = signature.r.substr(10);
@@ -49,12 +39,7 @@ describe('ZeroEx library', () => {
                     r: malformedR,
                     s: signature.s.replace('0', 'z'),
                 };
-                try {
-                    const isValid = ZeroEx.isValidSignature(data, malformedSignature, address);
-                    throw new Error('isValidSignature should have thrown');
-                } catch (err) {
-                    // continue
-                }
+                expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw();
             });
             it('s is not hex', () => {
                 const malformedS = signature.s.replace('0', 'z');
@@ -63,12 +48,7 @@ describe('ZeroEx library', () => {
                     r: signature.r,
                     s: malformedS,
                 };
-                try {
-                    const isValid = ZeroEx.isValidSignature(data, malformedSignature, address);
-                    throw new Error('isValidSignature should have thrown');
-                } catch (err) {
-                    // continue
-                }
+                expect(() => ZeroEx.isValidSignature(data, malformedSignature, address)).to.throw();
             });
         });
         it('should return false if the data doesn\'t pertain to the signature & address', () => {
-- 
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