diff --git a/test/type_id_test.exs b/test/type_id_test.exs
index 8101f10..4b6a67d 100644
--- a/test/type_id_test.exs
+++ b/test/type_id_test.exs
@@ -8,4 +8,12 @@ defmodule TypeIDTest do
     end
   end
 
+  describe "from_string!/1" do
+    test "parses TypeIDs as defined by the spec" do
+      tid = TypeID.from_string!("test_01h44had5rfswbvpc383ktj0aa")
+      assert "test" == TypeID.type(tid)
+      assert "01890915-34b8-7e78-bdd9-8340e7a9014a" == TypeID.uuid(tid)
+    end
+  end
+
 end