Add basic metadata to opengraph preview

Also refactor datetime & address utils

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

test/service/address/address_test.exs

@@ -0,0 +1,58 @@
+defmodule Mobilizon.Service.AddressTest do
+  @moduledoc """
+  Test representing addresses
+  """
+  use Mobilizon.DataCase
+  alias Mobilizon.Addresses.Address
+  alias Mobilizon.Service.Address, as: AddressRenderer
+  import Mobilizon.Factory
+
+  describe "render an address" do
+    test "basic" do
+      %Address{} = address = insert(:address)
+
+      assert AddressRenderer.render_address(address) ==
+               "#{address.description}, #{address.postal_code}, #{address.locality}, #{address.country}"
+    end
+
+    test "a house" do
+      assert AddressRenderer.render_address(%Address{
+               description: "somewhere",
+               type: "house",
+               postal_code: "35000",
+               locality: "Rennes"
+             }) ==
+               "somewhere, 35000, Rennes"
+    end
+
+    test "a city" do
+      assert AddressRenderer.render_address(%Address{
+               description: "Rennes",
+               type: "city",
+               postal_code: "35000",
+               locality: "Rennes"
+             }) ==
+               "Rennes (35000)"
+    end
+
+    test "a region" do
+      assert AddressRenderer.render_address(%Address{
+               description: "Ille et Vilaine",
+               type: "administrative",
+               postal_code: "",
+               locality: ""
+             }) ==
+               "Ille et Vilaine"
+    end
+
+    test "only with description" do
+      assert AddressRenderer.render_address(%Address{description: "somewhere"}) == "somewhere"
+    end
+
+    test "with no data" do
+      assert_raise ArgumentError, "Invalid address", fn ->
+        AddressRenderer.render_address(%Address{})
+      end
+    end
+  end
+end