From e78e642eef21c0219eb025f859edea5817363b3f Mon Sep 17 00:00:00 2001
From: Dan Finlay <dan@danfinlay.com>
Date: Tue, 7 Mar 2017 11:34:11 -0800
Subject: Add gas buffer test

---
 test/unit/tx-utils-test.js | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 test/unit/tx-utils-test.js

(limited to 'test')

diff --git a/test/unit/tx-utils-test.js b/test/unit/tx-utils-test.js
new file mode 100644
index 000000000..6131ed73f
--- /dev/null
+++ b/test/unit/tx-utils-test.js
@@ -0,0 +1,38 @@
+const assert = require('assert')
+const ethUtil = require('ethereumjs-util')
+const BN = ethUtil.BN
+
+const TxUtils = require('../../app/scripts/lib/tx-utils')
+
+
+describe('txUtils', function() {
+  let txUtils
+
+  before(function() {
+    txUtils = new TxUtils()
+  })
+
+  describe('addGasBuffer', function() {
+    describe('adds a flat value', function() {
+      it('over an empty value', function() {
+        const input = '0x0'
+        const output = txUtils.addGasBuffer(input)
+        assert.notEqual(output, input, 'changed the value')
+
+        const inputBn = new BN(input, 'hex')
+        const outputBn = new BN(output, 'hex')
+        assert(outputBn.gt(inputBn), 'returns a greater value')
+      })
+
+      it('over an value', function() {
+        const input = '0x123fad'
+        const output = txUtils.addGasBuffer(input)
+        assert.notEqual(output, input, 'changed the value')
+
+        const inputBn = new BN(input, 'hex')
+        const outputBn = new BN(output, 'hex')
+        assert(outputBn.gt(inputBn), 'returns a greater value')
+      })
+    })
+  })
+})
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