Tests

Write some simple doctests, and eliminate the generated default test

There really isn't much to test here, as any tests beyond "Wow it works"
are just testing the underlying Djot transformer

lib/djot.ex

@@ -1,17 +1,37 @@
 defmodule Djot do
   @moduledoc """
-    Transform a Djot string input to HTML output.
+  Transform a Djot string input to HTML output.
 
-    No sanitization is performed, the document comes directly from the Djot transformer.
+  No sanitization is performed, the document comes directly from the Djot transformer.
   """
 
   alias Djot.Native
 
+  @doc ~S"""
+  Converts a Djot document into HTML
+
+  Returns a tuple
+
+  ## Examples
+
+    iex> Djot.to_html("Hello World!")
+    {:ok, "<p>Hello World!</p>\n"}
+  """
   @spec to_html(String.t()) :: {:ok, String.t()} | {:error, :djot_transform}
   def to_html(dj) do
     Native.to_html(dj)
   end
 
+  @doc ~S"""
+  Converts a Djot document into HTML
+
+  Returns the document or throws an error
+
+  ## Examples
+
+    iex> Djot.to_html!("Hello World!")
+    "<p>Hello World!</p>\n"
+  """
   @spec to_html!(String.t()) :: String.t()
   def to_html!(dj) do
     case Native.to_html(dj) do

mix.exs

@@ -37,7 +37,6 @@ defmodule Djot.MixProject do
   defp deps do
     [
       {:rustler, "~> 0.30.0"},
-
       {:ex_doc, "~> 0.30.9", only: :dev, runtime: false}
     ]
   end

test/djot_test.exs

@@ -1,8 +1,4 @@
 defmodule DjotTest do
   use ExUnit.Case
   doctest Djot
-
-  test "greets the world" do
-    assert Djot.hello() == :world
-  end
 end