create mobile_header_spec file

decidim-core/spec/system/mobile_header_spec.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe "Mobile header" do
+  let(:organization) { create(:organization) }
+  let!(:user) { create(:user, :admin, :confirmed, organization:) }
+
+  before do
+    Capybara.current_driver = :iphone
+    switch_to_host(organization.host)
+    visit decidim.root_path
+    click_button "Accept all"
+  end
+
+  it "has a login link" do
+    expect(page).to have_css(".main-bar__links-mobile__login")
+  end
+
+  context "when user login is confirmed" do
+    before do
+        switch_to_host(organization.host)
+        login_as user, scope: :user
+        visit decidim.root_path
+    end
+
+    it "displays an avatar on the header" do
+        expect(page).to have_css(".main-bar__avatar")
+    end
+  end
+end