upgrade to phoenix 1.7

test/cannery_web/controllers/error_json_test.exs

@@ -0,0 +1,12 @@
+defmodule CanneryWeb.ErrorJSONTest do
+  use CanneryWeb.ConnCase, async: true
+  alias CanneryWeb.ErrorJSON
+
+  test "renders 404" do
+    assert ErrorJSON.render("404.json", %{}) == %{errors: %{detail: "Not found"}}
+  end
+
+  test "renders 500" do
+    assert ErrorJSON.render("500.json", %{}) == %{errors: %{detail: "Internal server error"}}
+  end
+end