Delete mock.pdf after download completes

spec/chromium-spec.js

@@ -1012,18 +1012,18 @@ describe('chromium feature', function () {
       slashes: true
     })
 
-    function createBrowserWindow (isPluginsEnabled) {
+    function createBrowserWindow ({plugins}) {
       w = new BrowserWindow({
         show: false,
         webPreferences: {
           preload: path.join(fixtures, 'module', 'preload-inject-ipc.js'),
-          plugins: isPluginsEnabled
+          plugins: plugins
         }
       })
     }
 
     it('opens when loading a pdf resource as top level navigation', function (done) {
-      createBrowserWindow(true)
+      createBrowserWindow({plugins: true})
       ipcMain.once('pdf-loaded', function (event, success) {
         if (success) done()
       })
@@ -1046,19 +1046,20 @@ describe('chromium feature', function () {
     })
 
     it('should download a pdf when plugins are disabled', function (done) {
-      createBrowserWindow(false)
+      createBrowserWindow({plugins: false})
       ipcRenderer.sendSync('set-download-option', false, false)
       ipcRenderer.once('download-done', function (event, state, url, mimeType, receivedBytes, totalBytes, disposition, filename) {
         assert.equal(state, 'completed')
         assert.equal(filename, 'cat.pdf')
         assert.equal(mimeType, 'application/pdf')
+        fs.unlinkSync(path.join(fixtures, 'mock.pdf'))
         done()
       })
       w.webContents.loadURL(pdfSource)
     })
 
     it('should not open when pdf is requested as sub resource', function (done) {
-      createBrowserWindow(true)
+      createBrowserWindow({plugins: true})
       webFrame.registerURLSchemeAsPrivileged('file', {
         secure: false,
         bypassCSP: false,