Fix unit test by native module mock

Auditors: @NejcZdovc

test/unit/app/browser/ads/adBlockUtilTest.js

@@ -1,15 +1,26 @@
-/* global describe, it */
+/* global before, describe, it */
 
 require('../../../braveUnit')
 const assert = require('assert')
 const {URL} = require('url')
+const fakeAdBlock = require('../../../lib/fakeAdBlock')
+const mockery = require('mockery')
 
 const site = new URL('https://www.brave.com')
 const thirdPartyResource = new URL('https://www.coffee.com/logo.png')
 const firstPartyResource = new URL('https://www.brave.com/logo.png')
-const {shouldDoAdBlockCheck} = require('../../../../../app/browser/ads/adBlockUtil')
 
 describe('adBlockUtil test', function () {
+  let shouldDoAdBlockCheck
+  before(function () {
+    mockery.enable({
+      warnOnReplace: false,
+      warnOnUnregistered: false,
+      useCleanCache: true
+    })
+    mockery.registerMock('ad-block', fakeAdBlock)
+    shouldDoAdBlockCheck = require('../../../../../app/browser/ads/adBlockUtil').shouldDoAdBlockCheck
+  })
   describe('shouldDoAdBlockCheck', function () {
     it('http protocol allows ad block checks', function () {
       assert.ok(shouldDoAdBlockCheck('script', new URL('https://www.brave.com'), thirdPartyResource, false))

test/unit/app/browser/reducers/tabsReducerTest.js

@@ -36,6 +36,7 @@ describe('tabsReducer', function () {
       }]
     })
     mockery.registerMock('electron', fakeElectron)
+    mockery.registerMock('leveldown', {})
     mockery.registerMock('./webContentsCache', {
       getWebContents: (tabId) => ({
         canGoBack: () => true,

test/unit/lib/fakeAdBlock.js

@@ -0,0 +1,24 @@
+const fakeAdBlock = {
+  FilterOptions: {
+    noFilterOption: 0,
+    script: 0o1,
+    image: 0o2,
+    stylesheet: 0o4,
+    object: 0o10,
+    xmlHttpRequest: 0o20,
+    objectSubrequest: 0o40,
+    subdocument: 0o100,
+    document: 0o200,
+    other: 0o400,
+    xbl: 0o1000,
+    collapse: 0o2000,
+    doNotTrack: 0o4000,
+    elemHide: 0o10000,
+    thirdParty: 0o20000,
+    notThirdParty: 0o40000
+  },
+  AdBlockClient: function () {
+  }
+}
+
+module.exports = fakeAdBlock