[day-05] test user changeset validation

test/wabanex/user_test.exs

@@ -0,0 +1,33 @@
+defmodule Wabanex.UserTest do
+  use Wabanex.DataCase, async: true
+
+  alias Wabanex.User
+
+  describe "changeset/1" do
+    test "when all param are valid returns a valid changeset" do
+      params = %{name: "Joe Doe", email: "joe.doe@anywhere.com", password: "aLongEnough"}
+
+      changeset = User.changeset(params)
+
+      assert %{
+               valid?: true,
+               changes: %{name: "Joe Doe", email: "joe.doe@anywhere.com", password: "aLongEnough"},
+               errors: []
+             } = changeset
+    end
+
+    test "when one of the params is invalid returns an invalid changeset" do
+      params = %{name: "J", email: "j", password: "j"}
+
+      changeset = User.changeset(params)
+
+      assert %{valid?: false} = changeset
+
+      assert %{
+               name: ["should be at least 2 character(s)"],
+               email: ["has invalid format"],
+               password: ["should be at least 6 character(s)"]
+             } == errors_on(changeset)
+    end
+  end
+end