Move formShouldBeDisabled from send-footer util to component.

ui/app/components/send_/send-footer/send-footer.component.js

@@ -17,6 +17,7 @@ export default class SendFooter extends Component {
     gasPrice: PropTypes.string,
     gasTotal: PropTypes.string,
     history: PropTypes.object,
+    inError: PropTypes.bool,
     selectedToken: PropTypes.object,
     sign: PropTypes.func,
     to: PropTypes.string,
@@ -75,12 +76,18 @@ export default class SendFooter extends Component {
     this.props.history.push(CONFIRM_TRANSACTION_ROUTE)
   }
 
+  formShouldBeDisabled () {
+    const { inError, selectedToken, tokenBalance, gasTotal } = this.props
+    const missingTokenBalance = selectedToken && !tokenBalance
+    return inError || !gasTotal || missingTokenBalance
+  }
+
   render () {
     return (
       <PageContainerFooter
         onCancel={() => this.onCancel()}
         onSubmit={e => this.onSubmit(e)}
-        disabled={this.props.disabled}
+        disabled={this.formShouldBeDisabled()}
       />
     )
   }

ui/app/components/send_/send-footer/send-footer.utils.js

@@ -2,11 +2,6 @@ const ethAbi = require('ethereumjs-abi')
 const ethUtil = require('ethereumjs-util')
 const { TOKEN_TRANSFER_FUNCTION_SIGNATURE } = require('../send.constants')
 
-function formShouldBeDisabled ({ inError, selectedToken, tokenBalance, gasTotal }) {
-  const missingTokenBalance = selectedToken && !tokenBalance
-  return inError || !gasTotal || missingTokenBalance
-}
-
 function addHexPrefixToObjectValues (obj) {
   return Object.keys(obj).reduce((newObj, key) => {
     return { ...newObj, [key]: ethUtil.addHexPrefix(obj[key]) }
@@ -81,7 +76,6 @@ function addressIsNew (toAccounts, newAddress) {
 
 module.exports = {
   addressIsNew,
-  formShouldBeDisabled,
   constructTxParams,
   constructUpdatedTx,
   addHexPrefixToObjectValues,

ui/app/components/send_/send-footer/tests/send-footer-component.test.js

@@ -37,6 +37,7 @@ describe('SendFooter Component', function () {
       gasPrice={'mockGasPrice'}
       gasTotal={'mockGasTotal'}
       history={historySpies}
+      inError={false}
       selectedToken={{ mockProp: 'mockSelectedTokenProp' }}
       sign={propsMethodSpies.sign}
       to={'mockTo'}
@@ -73,6 +74,39 @@ describe('SendFooter Component', function () {
     })
   })
 
+
+  describe('formShouldBeDisabled()', () => {
+    const config = {
+      'should return true if inError is truthy': {
+        inError: true,
+        expectedResult: true,
+      },
+      'should return true if gasTotal is falsy': {
+        inError: false,
+        gasTotal: false,
+        expectedResult: true,
+      },
+      'should return true if selectedToken is truthy and tokenBalance is falsy': {
+        selectedToken: true,
+        tokenBalance: null,
+        expectedResult: true,
+      },
+      'should return false if inError is false and all other params are truthy': {
+        inError: false,
+        gasTotal: '0x123',
+        selectedToken: true,
+        tokenBalance: 123,
+        expectedResult: false,
+      },
+    }
+    Object.entries(config).map(([description, obj]) => {
+      it(description, () => {
+        wrapper.setProps(obj)
+        assert.equal(wrapper.instance().formShouldBeDisabled(), obj.expectedResult)
+      })
+    })
+  })
+
   describe('onSubmit', () => {
     it('should call addToAddressBookIfNew with the correct params', () => {
       wrapper.instance().onSubmit(MOCK_EVENT)
@@ -134,6 +168,35 @@ describe('SendFooter Component', function () {
   })
 
   describe('render', () => {
+    beforeEach(() => {
+      sinon.stub(SendFooter.prototype, 'formShouldBeDisabled').returns('formShouldBeDisabledReturn')
+      wrapper = shallow(<SendFooter
+        addToAddressBookIfNew={propsMethodSpies.addToAddressBookIfNew}
+        amount={'mockAmount'}
+        clearSend={propsMethodSpies.clearSend}
+        disabled={true}
+        editingTransactionId={'mockEditingTransactionId'}
+        errors={{}}
+        from={ { address: 'mockAddress', balance: 'mockBalance' } }
+        gasLimit={'mockGasLimit'}
+        gasPrice={'mockGasPrice'}
+        gasTotal={'mockGasTotal'}
+        history={historySpies}
+        inError={false}
+        selectedToken={{ mockProp: 'mockSelectedTokenProp' }}
+        sign={propsMethodSpies.sign}
+        to={'mockTo'}
+        toAccounts={['mockAccount']}
+        tokenBalance={'mockTokenBalance'}
+        unapprovedTxs={['mockTx']}
+        update={propsMethodSpies.update}
+      />, { context: { t: str => str } })
+    })
+
+    afterEach(() => {
+      SendFooter.prototype.formShouldBeDisabled.restore()
+    })
+
     it('should render a PageContainerFooter component', () => {
       assert.equal(wrapper.find(PageContainerFooter).length, 1)
     })
@@ -144,7 +207,7 @@ describe('SendFooter Component', function () {
         onSubmit,
         disabled,
       } = wrapper.find(PageContainerFooter).props()
-      assert.equal(disabled, true)
+      assert.equal(disabled, 'formShouldBeDisabledReturn')
 
       assert.equal(SendFooter.prototype.onSubmit.callCount, 0)
       onSubmit(MOCK_EVENT)

ui/app/components/send_/send-footer/tests/send-footer-utils.test.js

@@ -16,7 +16,6 @@ const sendUtils = proxyquire('../send-footer.utils.js', {
 })
 const {
   addressIsNew,
-  formShouldBeDisabled,
   constructTxParams,
   constructUpdatedTx,
   addHexPrefixToObjectValues,
@@ -65,37 +64,6 @@ describe('send-footer utils', () => {
     })
   })
 
-  describe('formShouldBeDisabled()', () => {
-    const config = {
-      'should return true if inError is truthy': {
-        inError: true,
-        expectedResult: true,
-      },
-      'should return true if gasTotal is falsy': {
-        inError: false,
-        gasTotal: false,
-        expectedResult: true,
-      },
-      'should return true if selectedToken is truthy and tokenBalance is falsy': {
-        selectedToken: true,
-        tokenBalance: null,
-        expectedResult: true,
-      },
-      'should return false if inError is false and all other params are truthy': {
-        inError: false,
-        gasTotal: '0x123',
-        selectedToken: true,
-        tokenBalance: 123,
-        expectedResult: false,
-      },
-    }
-    Object.entries(config).map(([description, obj]) => {
-      it(description, () => {
-        assert.equal(formShouldBeDisabled(obj), obj.expectedResult)
-      })
-    })
-  })
-
   describe('constructTxParams()', () => {
     it('should return a new txParams object with value and to properties if there is no selectedToken', () => {
       assert.deepEqual(