diff --git a/src/tests/Browser.php b/src/tests/Browser.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Browser.php
@@ -0,0 +1,118 @@
+<?php
+
+namespace Tests;
+
+use Facebook\WebDriver\WebDriverKeys;
+use PHPUnit\Framework\Assert;
+use Tests\Browser\Components;
+
+/**
+ * Laravel Dusk Browser extensions
+ */
+class Browser extends \Laravel\Dusk\Browser
+{
+    /**
+     * Assert number of (visible) elements
+     */
+    public function assertElementsCount($selector, $expected_count, $visible = true)
+    {
+        $elements = $this->elements($selector);
+        $count = count($elements);
+
+        if ($visible) {
+            foreach ($elements as $element) {
+                if (!$element->isDisplayed()) {
+                    $count--;
+                }
+            }
+        }
+
+        Assert::assertEquals($expected_count, $count);
+
+        return $this;
+    }
+
+    /**
+     * Assert that the given element has specified class assigned.
+     */
+    public function assertHasClass($selector, $class_name)
+    {
+        $element = $this->resolver->findOrFail($selector);
+        $classes = explode(' ', (string) $element->getAttribute('class'));
+
+        Assert::assertContains($class_name, $classes);
+
+        return $this;
+    }
+
+    /**
+     * Check if in Phone mode
+     */
+    public static function isPhone()
+    {
+        return getenv('TESTS_MODE') == 'phone';
+    }
+
+    /**
+     * Check if in Tablet mode
+     */
+    public static function isTablet()
+    {
+        return getenv('TESTS_MODE') == 'tablet';
+    }
+
+    /**
+     * Check if in Desktop mode
+     */
+    public static function isDesktop()
+    {
+        return !self::isPhone() && !self::isTablet();
+    }
+
+    /**
+     * Returns content of a downloaded file
+     */
+    public function readDownloadedFile($filename)
+    {
+        $filename = __DIR__ . "/Browser/downloads/$filename";
+
+        // Give the browser a chance to finish download
+        if (!file_exists($filename)) {
+            sleep(2);
+        }
+
+        Assert::assertFileExists($filename);
+
+        return file_get_contents($filename);
+    }
+
+    /**
+     * Removes downloaded file
+     */
+    public function removeDownloadedFile($filename)
+    {
+        @unlink(__DIR__ . "/Browser/downloads/$filename");
+
+        return $this;
+    }
+
+    /**
+     * Execute code within body context.
+     * Useful to execute code that selects elements outside of a component context
+     */
+    public function withinBody($callback)
+    {
+        if ($this->resolver->prefix != 'body') {
+            $orig_prefix = $this->resolver->prefix;
+            $this->resolver->prefix = 'body';
+        }
+
+        call_user_func($callback, $this);
+
+        if (isset($orig_prefix)) {
+            $this->resolver->prefix = $orig_prefix;
+        }
+
+        return $this;
+    }
+}
diff --git a/src/tests/Browser/Components/Error.php b/src/tests/Browser/Components/Error.php
--- a/src/tests/Browser/Components/Error.php
+++ b/src/tests/Browser/Components/Error.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Components;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Component as BaseComponent;
 use PHPUnit\Framework\Assert as PHPUnit;
 
@@ -33,11 +32,11 @@
     /**
      * Assert that the browser page contains the component.
      *
-     * @param Browser $browser
+     * @param \Laravel\Dusk\Browser $browser
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->waitFor($this->selector())
             ->assertSeeIn('@code', $this->code)
diff --git a/src/tests/Browser/Components/ListInput.php b/src/tests/Browser/Components/ListInput.php
--- a/src/tests/Browser/Components/ListInput.php
+++ b/src/tests/Browser/Components/ListInput.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Components;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Component as BaseComponent;
 use PHPUnit\Framework\Assert as PHPUnit;
 
@@ -29,11 +28,11 @@
     /**
      * Assert that the browser page contains the component.
      *
-     * @param Browser $browser
+     * @param \Laravel\Dusk\Browser $browser
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
 //        $list = explode("\n", $browser->value($this->selector));
 
@@ -60,7 +59,7 @@
     /**
      * Assert list input content
      */
-    public function assertListInputValue(Browser $browser, array $list)
+    public function assertListInputValue($browser, array $list)
     {
         if (empty($list)) {
             $browser->assertMissing('.input-group:not(:first-child)');
@@ -76,7 +75,7 @@
     /**
      * Add list entry
      */
-    public function addListEntry(Browser $browser, string $value)
+    public function addListEntry($browser, string $value)
     {
         $browser->type('@input', $value)
             ->click('@add-btn')
@@ -86,7 +85,7 @@
     /**
      * Remove list entry
      */
-    public function removeListEntry(Browser $browser, int $num)
+    public function removeListEntry($browser, int $num)
     {
         $selector = '.input-group:nth-child(' . ($num + 1) . ') a.btn';
         $browser->click($selector)->assertMissing($selector);
@@ -95,7 +94,7 @@
     /**
      * Assert an error message on the widget
      */
-    public function assertFormError(Browser $browser, int $num, string $msg, bool $focused = false)
+    public function assertFormError($browser, int $num, string $msg, bool $focused = false)
     {
         $selector = '.input-group:nth-child(' . ($num + 1) . ') input.is-invalid';
 
diff --git a/src/tests/Browser/Components/Menu.php b/src/tests/Browser/Components/Menu.php
--- a/src/tests/Browser/Components/Menu.php
+++ b/src/tests/Browser/Components/Menu.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Components;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Component as BaseComponent;
 use PHPUnit\Framework\Assert as PHPUnit;
 
@@ -21,11 +20,11 @@
     /**
      * Assert that the browser page contains the component.
      *
-     * @param Browser $browser
+     * @param \Laravel\Dusk\Browser $browser
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertVisible($this->selector());
         $browser->assertVisible('@brand');
@@ -34,12 +33,12 @@
     /**
      * Assert that menu contains only specified menu items.
      *
-     * @param Browser $browser
-     * @param array   $items   List of menu items
+     * @param \Laravel\Dusk\Browser $browser
+     * @param array                 $items   List of menu items
      *
      * @return void
      */
-    public function assertMenuItems(Browser $browser, array $items)
+    public function assertMenuItems($browser, array $items)
     {
         // TODO: On mobile the links will not be visible
 
@@ -54,12 +53,12 @@
     /**
      * Assert that specified menu item is active
      *
-     * @param Browser $browser
-     * @param string  $item    Menu item name
+     * @param \Laravel\Dusk\Browser $browser
+     * @param string                $item    Menu item name
      *
      * @return void
      */
-    public function assertActiveItem(Browser $browser, string $item)
+    public function assertActiveItem($browser, string $item)
     {
         // TODO: On mobile the links will not be visible
 
diff --git a/src/tests/Browser/Components/Toast.php b/src/tests/Browser/Components/Toast.php
--- a/src/tests/Browser/Components/Toast.php
+++ b/src/tests/Browser/Components/Toast.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Components;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Component as BaseComponent;
 use PHPUnit\Framework\Assert as PHPUnit;
 
@@ -35,11 +34,11 @@
     /**
      * Assert that the browser page contains the component.
      *
-     * @param Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->waitFor($this->selector());
         $this->element = $browser->element($this->selector());
@@ -61,7 +60,7 @@
     /**
      * Assert title of the toast element
      */
-    public function assertToastTitle(Browser $browser, string $title)
+    public function assertToastTitle($browser, string $title)
     {
         if (empty($title)) {
             $browser->assertMissing('@title');
@@ -73,7 +72,7 @@
     /**
      * Assert message of the toast element
      */
-    public function assertToastMessage(Browser $browser, string $message)
+    public function assertToastMessage($browser, string $message)
     {
         $browser->assertSeeIn('@message', $message);
     }
@@ -81,7 +80,7 @@
     /**
      * Close the toast with a click
      */
-    public function closeToast(Browser $browser)
+    public function closeToast($browser)
     {
         $this->element->click();
     }
diff --git a/src/tests/Browser/DomainTest.php b/src/tests/Browser/DomainTest.php
--- a/src/tests/Browser/DomainTest.php
+++ b/src/tests/Browser/DomainTest.php
@@ -4,6 +4,7 @@
 
 use App\Domain;
 use App\User;
+use Tests\Browser;
 use Tests\Browser\Components\Error;
 use Tests\Browser\Components\Toast;
 use Tests\Browser\Pages\Dashboard;
@@ -11,7 +12,6 @@
 use Tests\Browser\Pages\DomainList;
 use Tests\Browser\Pages\Home;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 
 class DomainTest extends DuskTestCase
@@ -23,7 +23,7 @@
     public function testDomainInfoUnauth(): void
     {
         // Test that the page requires authentication
-        $this->browse(function (Browser $browser) {
+        $this->browse(function ($browser) {
             $browser->visit('/domain/123')->on(new Home());
         });
     }
@@ -33,7 +33,7 @@
      */
     public function testDomainInfo404(): void
     {
-        $this->browse(function (Browser $browser) {
+        $this->browse(function ($browser) {
             // FIXME: I couldn't make loginAs() method working
 
             // Note: Here we're also testing that unauthenticated request
@@ -44,7 +44,7 @@
                 // TODO: the check below could look simpler, but we can't
                 //       just remove the callback argument. We'll create
                 //       Browser wrapper in future, then we could create expectError() method
-                ->with(new Error('404'), function (Browser $browser) {
+                ->with(new Error('404'), function ($browser) {
                 });
         });
     }
@@ -56,7 +56,7 @@
      */
     public function testDomainInfo(): void
     {
-        $this->browse(function (Browser $browser) {
+        $this->browse(function ($browser) {
             // Unconfirmed domain
             $domain = Domain::where('namespace', 'kolab.org')->first();
             $domain->status ^= Domain::STATUS_CONFIRMED;
@@ -64,7 +64,7 @@
 
             $browser->visit('/domain/' . $domain->id)
                 ->on(new DomainInfo())
-                ->whenAvailable('@verify', function (Browser $browser) use ($domain) {
+                ->whenAvailable('@verify', function ($browser) use ($domain) {
                     // Make sure the domain is confirmed now
                     // TODO: Test verification process failure
                     $domain->status |= Domain::STATUS_CONFIRMED;
@@ -74,11 +74,11 @@
                         ->assertSeeIn('pre', $domain->hash())
                         ->click('button');
                 })
-                ->whenAvailable('@config', function (Browser $browser) use ($domain) {
+                ->whenAvailable('@config', function ($browser) use ($domain) {
                     $browser->assertSeeIn('pre', $domain->namespace);
                 })
                 ->assertMissing('@verify')
-                ->with(new Toast(Toast::TYPE_SUCCESS), function (Browser $browser) {
+                ->with(new Toast(Toast::TYPE_SUCCESS), function ($browser) {
                     $browser->assertToastTitle('')
                         ->assertToastMessage('Domain verified successfully')
                         ->closeToast();
@@ -98,7 +98,7 @@
     public function testDomainListUnauth(): void
     {
         // Test that the page requires authentication
-        $this->browse(function (Browser $browser) {
+        $this->browse(function ($browser) {
             $browser->visit('/logout')
                 ->visit('/domains')
                 ->on(new Home());
@@ -112,7 +112,7 @@
      */
     public function testDomainList(): void
     {
-        $this->browse(function (Browser $browser) {
+        $this->browse(function ($browser) {
             // Login the user
             $browser->visit('/login')
                 ->on(new Home())
@@ -127,7 +127,7 @@
                 ->click('@table tbody tr:first-child td:first-child a')
                 // On Domain Info page verify that's the clicked domain
                 ->on(new DomainInfo())
-                ->whenAvailable('@config', function (Browser $browser) {
+                ->whenAvailable('@config', function ($browser) {
                     $browser->assertSeeIn('pre', 'kolab.org');
                 });
         });
diff --git a/src/tests/Browser/ErrorTest.php b/src/tests/Browser/ErrorTest.php
--- a/src/tests/Browser/ErrorTest.php
+++ b/src/tests/Browser/ErrorTest.php
@@ -2,8 +2,8 @@
 
 namespace Tests\Browser;
 
+use Tests\Browser;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 
 class ErrorTest extends DuskTestCase
 {
diff --git a/src/tests/Browser/LogonTest.php b/src/tests/Browser/LogonTest.php
--- a/src/tests/Browser/LogonTest.php
+++ b/src/tests/Browser/LogonTest.php
@@ -2,12 +2,12 @@
 
 namespace Tests\Browser;
 
+use Tests\Browser;
 use Tests\Browser\Components\Menu;
 use Tests\Browser\Components\Toast;
 use Tests\Browser\Pages\Dashboard;
 use Tests\Browser\Pages\Home;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 
 class LogonTest extends DuskTestCase
diff --git a/src/tests/Browser/Pages/Dashboard.php b/src/tests/Browser/Pages/Dashboard.php
--- a/src/tests/Browser/Pages/Dashboard.php
+++ b/src/tests/Browser/Pages/Dashboard.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class Dashboard extends Page
@@ -20,10 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param  \Laravel\Dusk\Browser  $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
+     *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs('/dashboard')
             ->waitUntilMissing('@app .app-loader')
diff --git a/src/tests/Browser/Pages/DomainInfo.php b/src/tests/Browser/Pages/DomainInfo.php
--- a/src/tests/Browser/Pages/DomainInfo.php
+++ b/src/tests/Browser/Pages/DomainInfo.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class DomainInfo extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->waitUntilMissing('@app .app-loader')
             ->assertPresent('@config,@verify');
diff --git a/src/tests/Browser/Pages/DomainList.php b/src/tests/Browser/Pages/DomainList.php
--- a/src/tests/Browser/Pages/DomainList.php
+++ b/src/tests/Browser/Pages/DomainList.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class DomainList extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs($this->url())
             ->waitUntilMissing('@app .app-loader')
diff --git a/src/tests/Browser/Pages/Home.php b/src/tests/Browser/Pages/Home.php
--- a/src/tests/Browser/Pages/Home.php
+++ b/src/tests/Browser/Pages/Home.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class Home extends Page
@@ -20,10 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param  \Laravel\Dusk\Browser  $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
+     *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs($this->url())
             ->assertVisible('form.form-signin');
@@ -44,14 +44,14 @@
     /**
      * Submit logon form.
      *
-     * @param Browser $browser
-     * @param string  $username
-     * @param string  $password
-     * @param bool    $wait_for_dashboard
+     * @param \Laravel\Dusk\Browser $browser  The browser object
+     * @param string                $username User name
+     * @param string                $password User password
+     * @param bool                  $wait_for_dashboard
      *
      * @return void
      */
-    public function submitLogon(Browser $browser, $username, $password, $wait_for_dashboard = false)
+    public function submitLogon($browser, $username, $password, $wait_for_dashboard = false)
     {
         $browser
             ->type('#inputEmail', $username)
diff --git a/src/tests/Browser/Pages/PasswordReset.php b/src/tests/Browser/Pages/PasswordReset.php
--- a/src/tests/Browser/Pages/PasswordReset.php
+++ b/src/tests/Browser/Pages/PasswordReset.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class PasswordReset extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs('/password-reset');
         $browser->assertPresent('@step1');
diff --git a/src/tests/Browser/Pages/Signup.php b/src/tests/Browser/Pages/Signup.php
--- a/src/tests/Browser/Pages/Signup.php
+++ b/src/tests/Browser/Pages/Signup.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class Signup extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs('/signup')
             ->assertPresent('@step0')
diff --git a/src/tests/Browser/Pages/UserInfo.php b/src/tests/Browser/Pages/UserInfo.php
--- a/src/tests/Browser/Pages/UserInfo.php
+++ b/src/tests/Browser/Pages/UserInfo.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class UserInfo extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->waitFor('@form');
     }
diff --git a/src/tests/Browser/Pages/UserList.php b/src/tests/Browser/Pages/UserList.php
--- a/src/tests/Browser/Pages/UserList.php
+++ b/src/tests/Browser/Pages/UserList.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class UserList extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs($this->url())
             ->waitUntilMissing('@app .app-loader')
diff --git a/src/tests/Browser/Pages/UserProfile.php b/src/tests/Browser/Pages/UserProfile.php
--- a/src/tests/Browser/Pages/UserProfile.php
+++ b/src/tests/Browser/Pages/UserProfile.php
@@ -2,7 +2,6 @@
 
 namespace Tests\Browser\Pages;
 
-use Laravel\Dusk\Browser;
 use Laravel\Dusk\Page;
 
 class UserProfile extends Page
@@ -20,11 +19,11 @@
     /**
      * Assert that the browser is on the page.
      *
-     * @param \Laravel\Dusk\Browser $browser
+     * @param \Laravel\Dusk\Browser $browser The browser object
      *
      * @return void
      */
-    public function assert(Browser $browser)
+    public function assert($browser)
     {
         $browser->assertPathIs($this->url())
             ->waitUntilMissing('@app .app-loader')
diff --git a/src/tests/Browser/PasswordResetTest.php b/src/tests/Browser/PasswordResetTest.php
--- a/src/tests/Browser/PasswordResetTest.php
+++ b/src/tests/Browser/PasswordResetTest.php
@@ -4,11 +4,11 @@
 
 use App\User;
 use App\VerificationCode;
+use Tests\Browser;
 use Tests\Browser\Pages\Dashboard;
 use Tests\Browser\Pages\Home;
 use Tests\Browser\Pages\PasswordReset;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 
 class PasswordResetTest extends DuskTestCase
diff --git a/src/tests/Browser/SignupTest.php b/src/tests/Browser/SignupTest.php
--- a/src/tests/Browser/SignupTest.php
+++ b/src/tests/Browser/SignupTest.php
@@ -5,12 +5,12 @@
 use App\Domain;
 use App\SignupCode;
 use App\User;
+use Tests\Browser;
 use Tests\Browser\Components\Menu;
 use Tests\Browser\Components\Toast;
 use Tests\Browser\Pages\Dashboard;
 use Tests\Browser\Pages\Signup;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 
 class SignupTest extends DuskTestCase
diff --git a/src/tests/Browser/UserProfileTest.php b/src/tests/Browser/UserProfileTest.php
--- a/src/tests/Browser/UserProfileTest.php
+++ b/src/tests/Browser/UserProfileTest.php
@@ -3,12 +3,12 @@
 namespace Tests\Browser;
 
 use App\User;
+use Tests\Browser;
 use Tests\Browser\Components\Toast;
 use Tests\Browser\Pages\Dashboard;
 use Tests\Browser\Pages\Home;
 use Tests\Browser\Pages\UserProfile;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 
 class UserProfileTest extends DuskTestCase
diff --git a/src/tests/Browser/UsersTest.php b/src/tests/Browser/UsersTest.php
--- a/src/tests/Browser/UsersTest.php
+++ b/src/tests/Browser/UsersTest.php
@@ -4,6 +4,7 @@
 
 use App\User;
 use App\UserAlias;
+use Tests\Browser;
 use Tests\Browser\Components\ListInput;
 use Tests\Browser\Components\Toast;
 use Tests\Browser\Pages\Dashboard;
@@ -11,7 +12,6 @@
 use Tests\Browser\Pages\UserInfo;
 use Tests\Browser\Pages\UserList;
 use Tests\DuskTestCase;
-use Laravel\Dusk\Browser;
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 
 class UsersTest extends DuskTestCase
diff --git a/src/tests/DuskTestCase.php b/src/tests/DuskTestCase.php
--- a/src/tests/DuskTestCase.php
+++ b/src/tests/DuskTestCase.php
@@ -84,11 +84,45 @@
     protected function driver()
     {
         $options = (new ChromeOptions())->addArguments([
+            '--lang=en_US',
             '--disable-gpu',
             '--headless',
             '--window-size=1280,720',
         ]);
 
+        // For file download handling
+        $prefs = [
+            'profile.default_content_settings.popups' => 0,
+            'download.default_directory' => __DIR__ . '/Browser/downloads',
+        ];
+
+        $options->setExperimentalOption('prefs', $prefs);
+
+        if (getenv('TESTS_MODE') == 'phone') {
+            // Fake User-Agent string for mobile mode
+            $ua = 'Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/537.36'
+                . ' (KHTML, like Gecko) Chrome/60.0.3112.90 Mobile Safari/537.36';
+            $options->setExperimentalOption('mobileEmulation', ['userAgent' => $ua]);
+            $options->addArguments(['--window-size=375,667']);
+        } elseif (getenv('TESTS_MODE') == 'tablet') {
+            // Fake User-Agent string for mobile mode
+            $ua = 'Mozilla/5.0 (Linux; Android 6.0.1; vivo 1603 Build/MMB29M) AppleWebKit/537.36 '
+                . ' (KHTML, like Gecko) Chrome/58.0.3029.83 Mobile Safari/537.36';
+            $options->setExperimentalOption('mobileEmulation', ['userAgent' => $ua]);
+            $options->addArguments(['--window-size=800,640']);
+        } else {
+            $options->addArguments(['--window-size=1280,720']);
+        }
+
+        // Make sure downloads dir exists and is empty
+        if (!file_exists(__DIR__ . '/Browser/downloads')) {
+            mkdir(__DIR__ . '/Browser/downloads', 0777, true);
+        } else {
+            foreach (glob(__DIR__ . '/Browser/downloads/*') as $file) {
+                @unlink($file);
+            }
+        }
+
         return RemoteWebDriver::create(
             'http://localhost:9515',
             DesiredCapabilities::chrome()->setCapability(
@@ -97,4 +131,12 @@
             )
         );
     }
+
+    /**
+     * Replace Dusk's Browser with our (extended) Browser
+     */
+    protected function newBrowser($driver)
+    {
+        return new Browser($driver);
+    }
 }