Add tests for to_form :action

test/phoenix_ecto/html_test.exs

@@ -38,6 +38,34 @@ defmodule PhoenixEcto.HTMLTest do
       assert f.params == %{}
       assert f.hidden == []
       assert f.options == [method: "post"]
+      assert f.action == nil
+      assert f.source.action == nil
+    end
+
+    test "to_form :action option sets changeset action" do
+      changeset =
+        %User{}
+        |> cast(%{}, ~w()a)
+        |> validate_length(:name, min: 3)
+        |> Map.put(:action, :validate)
+
+      assert changeset.action == :validate
+      f = to_form(changeset, action: :insert)
+      assert f.action == :insert
+      assert f.source.action == :insert
+    end
+
+    test "to_form without :action option uses changeset action" do
+      changeset =
+        %User{}
+        |> cast(%{}, ~w()a)
+        |> validate_length(:name, min: 3)
+        |> Map.put(:action, :insert)
+
+      assert changeset.action == :insert
+      f = to_form(changeset)
+      assert f.action == :insert
+      assert f.source.action == :insert
     end
 
     test "with loaded changeset" do