Set address to default with empty string, add test validation.

test/helper.js

@@ -1,3 +1,7 @@
+import Enzyme from 'enzyme'
+import Adapter from 'enzyme-adapter-react-15'
+
+Enzyme.configure({ adapter: new Adapter() })
 // disallow promises from swallowing errors
 enableFailureOnUnhandledPromiseRejection()
 

test/lib/shallow-with-store.js

@@ -0,0 +1,20 @@
+const { shallow, mount } = require('enzyme')
+
+module.exports = {
+  shallowWithStore,
+  mountWithStore,
+}
+
+function shallowWithStore (component, store) {
+  const context = {
+    store,
+  }
+  return shallow(component, {context})
+}
+
+function mountWithStore (component, store) {
+  const context = {
+    store,
+  }
+  return mount(component, {context})
+}

test/unit/ui/add-token.spec.js

@@ -0,0 +1,44 @@
+const React = require('react')
+const assert = require('assert')
+const { createMockStore } = require('redux-test-utils')
+const h = require('react-hyperscript')
+const { shallowWithStore, mountWithStore } = require('../../lib/shallow-with-store')
+const AddTokenScreen = require('../../../ui/app/add-token')
+
+describe.only('Add Token Screen', function () {
+  let addTokenComponent, store, component
+  const mockState = {
+    metamask: {
+      identities: {
+        '0x7d3517b0d011698406d6e0aed8453f0be2697926': {
+          'address': '0x7d3517b0d011698406d6e0aed8453f0be2697926',
+          'name': 'Add Token Name',
+        },
+      },
+    },
+  }
+  beforeEach(function () {
+    store = createMockStore(mockState)
+    component = shallowWithStore(h(AddTokenScreen), store)
+    addTokenComponent = component.dive()
+  })
+
+  describe('#ValidateInputs', function () {
+
+    it('Default State', function () {
+      addTokenComponent.instance().validateInputs()
+      const state = addTokenComponent.state()
+      assert.equal(state.warning, 'Address is invalid.')
+    })
+
+    it('Address is a Metamask Identity', function () {
+      addTokenComponent.setState({
+        address: '0x7d3517b0d011698406d6e0aed8453f0be2697926',
+      })
+      addTokenComponent.instance().validateInputs()
+      const state = addTokenComponent.state()
+      assert.equal(state.warning, 'Personal address detected. Input the token contract address.')
+    })
+
+  })
+})

ui/app/add-token.js

@@ -25,7 +25,7 @@ inherits(AddTokenScreen, Component)
 function AddTokenScreen () {
   this.state = {
     warning: null,
-    address: null,
+    address: '',
     symbol: 'TOKEN',
     decimals: 18,
   }
@@ -190,7 +190,7 @@ AddTokenScreen.prototype.validateInputs = function () {
 
   const validAddress = ethUtil.isValidAddress(address)
   if (!validAddress) {
-    msg += 'Address is invalid. '
+    msg += 'Address is invalid.'
   }
 
   const validDecimals = decimals >= 0 && decimals < 36