refactor testing error throwing

test/PausableToken.js

@@ -55,19 +55,19 @@ contract('PausableToken', function(accounts) {
     await token.pause();
     try { 
       await token.transfer(accounts[1], 100);
+      assert.fail('should have thrown before');
     } catch (error) {
-      return assertJump(error);
+      assertJump(error);
     }
-    assert.fail('should have thrown before');
   });
 
   it('should throw an error trying to transfer from another account while transactions are paused', async function() {
     await token.pause();
     try { 
       await token.transferFrom(accounts[0], accounts[1], 100);
+      assert.fail('should have thrown before');
     } catch (error) {
-      return assertJump(error);
+      assertJump(error);
     }
-    assert.fail('should have thrown before');
   });
 })