refactor: avoid parsing document twice for figure numbers

test/util.py

@@ -1,2 +1,19 @@
+from renderer.document import Document
+from renderer.fifty_ohm_html_renderer import FiftyOhmHtmlRenderer
+from renderer.fifty_ohm_html_slide_renderer import FiftyOhmHtmlSlideRenderer
+
+
 def paragraph(text):
     return f"<p>{text}</p>\n"
+
+
+def render_html(markdown):
+    """Render markdown with the HTML renderer through the project's Document."""
+    with FiftyOhmHtmlRenderer() as renderer:
+        return renderer.render(Document(markdown))
+
+
+def render_slide(markdown):
+    """Render markdown with the slide renderer through the project's Document."""
+    with FiftyOhmHtmlSlideRenderer() as renderer:
+        return renderer.render(Document(markdown))