Make sure title is properly sanitized

Close #247

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

test/support/abinthe_helpers.ex

@@ -1,4 +1,7 @@
 defmodule MobilizonWeb.AbsintheHelpers do
+  use Phoenix.ConnTest
+  @endpoint MobilizonWeb.Endpoint
+
   @moduledoc """
   Absinthe helpers for tests
   """
@@ -17,4 +20,20 @@ defmodule MobilizonWeb.AbsintheHelpers do
       "variables" => ""
     }
   end
+
+  def graphql_query(conn, options) do
+    conn
+    |> post(
+      "/api",
+      build_query(options[:query], options[:variables])
+    )
+    |> json_response(200)
+  end
+
+  defp build_query(query, variables) do
+    %{
+      "query" => query,
+      "variables" => variables
+    }
+  end
 end