Add regression tests for recent fixes

Modules with more than one submodule would previously nest all but the
first submodule incorrectly so expand the tests for the Doxygenindex
Node to cover that.

Similarly, expand the Sect Node tests to cover its new support for
attributes.

tests/test_doxygenindex_node.py

@@ -33,6 +33,7 @@ def test_to_asciidoc(tmp_path):
     <compoundname>hardware_base</compoundname>
     <title>hardware_base</title>
     <innergroup refid="group__channel__config">channel_config</innergroup>
+    <innergroup refid="group__sm__config">sm_config</innergroup>
     <briefdescription>
     </briefdescription>
     <detaileddescription>
@@ -59,6 +60,25 @@ def test_to_asciidoc(tmp_path):
     <detaileddescription>
     </detaileddescription>
   </compoundef>
+</doxygen>
+            """
+        )
+    with open(
+        f"{tmp_path}/group__sm__config.xml", "w", encoding="utf-8"
+    ) as channel_config:
+        channel_config.write(
+            """\
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<doxygen xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="compound.xsd" version="1.9.7" xml:lang="en-US">
+  <compounddef id="group__sm__config" kind="group">
+    <compoundname>sm_config</compoundname>
+    <title>sm_config</title>
+    <briefdescription>
+<para>PIO state machine configuration.</para>
+    </briefdescription>
+    <detaileddescription>
+    </detaileddescription>
+  </compoundef>
 </doxygen>
             """
         )
@@ -71,6 +91,8 @@ def test_to_asciidoc(tmp_path):
 </compound>
 <compound refid="group__channel__config" kind="group"><name>channel_config</name>
 </compound>
+<compound refid="group__sm__config" kind="group"><name>sm_config</name>
+</compound>
 </doxygenindex>
     """
 
@@ -92,6 +114,9 @@ def test_to_asciidoc(tmp_path):
 
         |{nbsp}{nbsp}{nbsp}{nbsp}<<group_channel_config,channel_config>>
         |DMA channel configuration.
+
+        |{nbsp}{nbsp}{nbsp}{nbsp}<<group_sm_config,sm_config>>
+        |PIO state machine configuration.
         |===
 
         [#group_hardware_base,reftext="hardware_base"]
@@ -106,9 +131,15 @@ def test_to_asciidoc(tmp_path):
         ===== Modules
 
         <<group_channel_config,channel_config>>:: DMA channel configuration.
+        <<group_sm_config,sm_config>>:: PIO state machine configuration.
 
         [#group_channel_config,reftext="channel_config"]
         ===== channel_config
 
-        DMA channel configuration."""
+        DMA channel configuration.
+
+        [#group_sm_config,reftext="sm_config"]
+        ===== sm_config
+
+        PIO state machine configuration."""
     )

tests/test_sect_node.py

@@ -1,6 +1,6 @@
 from textwrap import dedent
 from bs4 import BeautifulSoup
-from doxygentoasciidoc.nodes import Node, SectNode
+from doxygentoasciidoc.nodes import SectNode
 
 
 def test_sect_node(tmp_path):
@@ -19,3 +19,21 @@ def test_sect_node(tmp_path):
 
         Interrupts _are_ numbered as follows."""
     )
+
+
+def test_sect_node_with_attributes(tmp_path):
+    xml = """\
+    <sect1 id="foo" role="contextspecific" tag="PICO_2040" type="PICO_2040">
+    <title>Interrupt Numbers</title>
+    <para>Interrupts <emphasis>are</emphasis> numbered as follows.</para>
+    </sect1>"""
+
+    asciidoc = SectNode(BeautifulSoup(xml, "xml").sect1, xmldir=tmp_path).to_asciidoc()
+
+    assert asciidoc == dedent(
+        """\
+        [#foo,role=contextspecific,tag=PICO_2040,type=PICO_2040]
+        == Interrupt Numbers
+
+        Interrupts _are_ numbered as follows."""
+    )