Add missing error toast for unavailable custom node - Closes #879

features/login.feature

@@ -5,6 +5,16 @@ Feature: Login page
     And I click "login button"
     Then I should be logged in
 
+  Scenario: should show toast when trying to connect to an unavailable custom node
+    Given I'm on login page
+    When I fill in "wagon stock borrow episode laundry kitten salute link globe zero feed marble" to "passphrase" field
+    And I select option no. 3 from "network" select
+    And I clear "address" field
+    And I fill in "http://localhost:4218" to "address" field
+    And I click "login button"
+    And I wait 1 seconds
+    Then I should see text "Unable to connect to the node" in "toast" element
+
   Scenario: should allow to login to Mainnet 
     Given I'm on login page
     When I fill in "wagon stock borrow episode laundry kitten salute link globe zero feed marble" to "passphrase" field

features/step_definitions/generic.step.js

@@ -129,6 +129,11 @@ defineSupportCode(({ Given, When, Then, setDefaultTimeout }) => {
     waitForElemAndCheckItsText(selectorClass, text, callback);
   });
 
+  When('I clear "{elementName}" field', (elementName) => {
+    const selectorClass = `.${elementName.replace(/ /g, '-')}`;
+    browser.executeScript(`window.document.querySelector("${selectorClass} input, ${selectorClass} textarea").value = "";`);
+  });
+
   Given('I\'m logged in as "{accountName}"', (accountName, callback) => {
     browser.ignoreSynchronization = true;
     browser.driver.manage().window().setSize(1000, 1000);

src/actions/peers.js

@@ -1,6 +1,8 @@
+import i18next from 'i18next';
 import Lisk from 'lisk-js';
 import actionTypes from '../constants/actions';
 import { getNethash } from './../utils/api/nethash';
+import { errorToastDisplayed } from './toaster';
 
 const peerSet = (data, config) => ({
   data: Object.assign({
@@ -41,6 +43,8 @@ export const activePeerSet = data =>
       getNethash(Lisk.api(config)).then((response) => {
         config.nethash = response.nethash;
         dispatch(peerSet(data, config));
+      }).catch(() => {
+        dispatch(errorToastDisplayed({ label: i18next.t('Unable to connect to the node') }));
       });
     } else {
       dispatch(peerSet(data, config));