Convert dashboard test into a system test

Allows to remove an id used only for testing.

test/system/dashboard_test.rb

@@ -0,0 +1,27 @@
+require "application_system_test_case"
+
+class DashboardSystemTest < ApplicationSystemTestCase
+  test "show no users if have no friends" do
+    user = create(:user)
+    sign_in_as(user)
+
+    visit dashboard_path
+    assert_text "You have not added any friends yet."
+  end
+
+  test "show users if have friends" do
+    user = create(:user, :home_lon => 1.1, :home_lat => 1.1)
+    friend_user = create(:user, :home_lon => 1.2, :home_lat => 1.2)
+    create(:friendship, :befriender => user, :befriendee => friend_user)
+    create(:changeset, :user => friend_user)
+    sign_in_as(user)
+
+    visit dashboard_path
+    assert_no_text "You have not added any friends yet."
+
+    friends_heading = find :element, "h2", :text => "My friends"
+    others_heading = find :element, "h2", :text => "Other nearby users"
+
+    assert_link friend_user.display_name, :below => friends_heading, :above => others_heading
+  end
+end