Add basic test to ensure container completeness

ui/app/pages/settings/advanced-tab/advanced-tab.container.js

@@ -12,7 +12,7 @@ import {
 } from '../../../store/actions'
 import {preferencesSelector} from '../../../selectors/selectors'
 
-const mapStateToProps = state => {
+export const mapStateToProps = state => {
   const { appState: { warning }, metamask } = state
   const {
     featureFlags: {
@@ -31,7 +31,7 @@ const mapStateToProps = state => {
   }
 }
 
-const mapDispatchToProps = dispatch => {
+export const mapDispatchToProps = dispatch => {
   return {
     setHexDataFeatureFlag: shouldShow => dispatch(setFeatureFlag('sendHexData', shouldShow)),
     setRpcTarget: (newRpc, chainId, ticker, nickname) => dispatch(updateAndSetCustomRpc(newRpc, chainId, ticker, nickname)),

ui/app/pages/settings/advanced-tab/tests/advanced-tab-container.test.js

@@ -0,0 +1,49 @@
+import React from 'react'
+import assert from 'assert'
+import sinon from 'sinon'
+import { mount } from 'enzyme'
+import { mapStateToProps, mapDispatchToProps } from '../advanced-tab.container'
+
+const defaultState = {
+  appState: {
+    warning: null,
+  },
+  metamask: {
+    featureFlags: {
+      sendHexData: false,
+      advancedInlineGas: false,
+    },
+    preferences: {
+      autoLogoutTimeLimit: 0,
+      showFiatInTestnets: false,
+      useNativeCurrencyAsPrimaryCurrency: true,
+    },
+  },
+}
+
+describe('AdvancedTab Container', () => {
+  it('should map state to props correctly', () => {
+    const props = mapStateToProps(defaultState)
+    const expected = {
+      warning: null,
+      sendHexData: false,
+      advancedInlineGas: false,
+      showFiatInTestnets: false,
+      autoLogoutTimeLimit: 0,
+    }
+
+    assert.deepEqual(props, expected)
+  })
+
+  it('should map dispatch to props correctly', () => {
+    const props = mapDispatchToProps(() => 'mockDispatch')
+
+      assert.ok(typeof props.setHexDataFeatureFlag === 'function')
+      assert.ok(typeof props.setRpcTarget === 'function')
+      assert.ok(typeof props.displayWarning === 'function')
+      assert.ok(typeof props.showResetAccountConfirmationModal === 'function')
+      assert.ok(typeof props.setAdvancedInlineGasFeatureFlag === 'function')
+      assert.ok(typeof props.setShowFiatConversionOnTestnetsPreference === 'function')
+      assert.ok(typeof props.setAutoLogoutTimeLimit === 'function')
+  })
+})