2 files changed, 50 insertions, 1 deletions
diff --git a/test/unit/components/bn-as-decimal-input-test.js b/test/unit/components/bn-as-decimal-input-test.js
new file mode 100644
index 000000000..034bc3e18
--- /dev/null
+++ b/test/unit/components/bn-as-decimal-input-test.js
@@ -0,0 +1,50 @@
+var assert = require('assert')
+
+const additions = require('react-testutils-additions')
+const h = require('react-hyperscript')
+const ReactTestUtils = require('react-addons-test-utils')
+const ethUtil = require('ethereumjs-util')
+const BN = ethUtil.BN
+
+var BnInput = require('../../../ui/app/components/bn-as-decimal-input')
+
+describe('BnInput', function () {
+  it('can tolerate a gas decimal number at a high precision', function (done) {
+
+    const renderer = ReactTestUtils.createRenderer()
+
+    let valueStr = '20'
+    while (valueStr.length < 20) {
+      valueStr += '0'
+    }
+    const value = new BN(valueStr, 10)
+
+    let inputStr = '2.3'
+
+    let targetStr = '23'
+    while (targetStr.length < 19) {
+      targetStr += '0'
+    }
+    const target = new BN(targetStr, 10)
+
+    const precision = 1e18 // ether precision
+
+    const props = {
+      value,
+      precision,
+      onChange: (newBn) => {
+        assert.equal(newBn.toString(), target.toString(), 'should tolerate increase')
+        done()
+      },
+    }
+
+    const inputComponent = h(BnInput, props)
+    const component = additions.renderIntoDocument(inputComponent)
+    renderer.render(inputComponent)
+    const input = additions.find(component, 'input.hex-input')[0]
+    ReactTestUtils.Simulate.change(input, { preventDefault() {}, target: {
+      value: inputStr,
+      checkValidity() { return true } },
+    })
+  })
+})
diff --git a/test/unit/components/pending-tx-test.js b/test/unit/components/pending-tx-test.js
index 9ff948604..52e5e5910 100644
--- a/test/unit/components/pending-tx-test.js
+++ b/test/unit/components/pending-tx-test.js
@@ -6,7 +6,6 @@ const ReactTestUtils = require('react-addons-test-utils')
 const ethUtil = require('ethereumjs-util')
 
 describe('PendingTx', function () {
-
   const identities = {
     '0xfdea65c8e26263f6d9a1b5de9555d2931a33b826': {
       name: 'Main Account 1',