doc: pytest: Framework for documenting tests and document test_000_version

In order to easily document pytests, we need to include the autodoc
extension. We also need to make sure that for building the docs, CI
includes pytest and that we have PYTHONPATH configured such that it will
find all of the tests and related files. Finally, we need to have our
comments in the test file by in proper pydoc format in order to be
included in the output.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

.azure-pipelines.yml

@@ -92,7 +92,7 @@ stages:
           set -e
           python3 -m venv /tmp/venvhtml
           . /tmp/venvhtml/bin/activate
-          pip install -r doc/sphinx/requirements.txt
+          pip install -r doc/sphinx/requirements.txt pytest
           make htmldocs KDOC_WERROR=1
           make infodocs
 

.gitlab-ci.yml

@@ -164,7 +164,7 @@ docs:
   script:
     - python3 -m venv /tmp/venvhtml
     - . /tmp/venvhtml/bin/activate
-    - pip install -r doc/sphinx/requirements.txt
+    - pip install -r doc/sphinx/requirements.txt pytest
     - make htmldocs KDOC_WERROR=1
     - make infodocs
 

Makefile

@@ -2448,7 +2448,8 @@ DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
 	       linkcheckdocs dochelp refcheckdocs texinfodocs infodocs
 PHONY += $(DOC_TARGETS)
 $(DOC_TARGETS): scripts_basic FORCE
-	$(Q)$(MAKE) $(build)=doc $@
+	$(Q)PYTHONPATH=$(srctree)/test/py/tests:$(srctree)/test/py \
+	$(MAKE) $(build)=doc $@
 
 PHONY += checkstack ubootrelease ubootversion
 

doc/conf.py

@@ -48,7 +48,7 @@ extensions = ['kerneldoc', 'rstFlatTable', 'kernel_include',
               'kfigure', 'sphinx.ext.ifconfig', # 'automarkup',
               'maintainers_include', 'sphinx.ext.autosectionlabel',
               'kernel_abi', 'kernel_feat', 'sphinx-prompt',
-              'sphinx_reredirects' ]
+              'sphinx_reredirects', 'sphinx.ext.autodoc' ]
 
 #
 # cdomain is badly broken in Sphinx 3+.  Leaving it out generates *most*

doc/develop/pytest/index.rst

@@ -10,3 +10,11 @@ General
    :maxdepth: 1
 
    usage
+
+Individual tests
+----------------
+
+.. toctree::
+   :maxdepth: 1
+
+   test_000_version

doc/develop/pytest/test_000_version.rst

@@ -0,0 +1,8 @@
+test_000_version
+================
+
+.. automodule:: test_000_version
+   :synopsis:
+   :member-order: bysource
+   :members:
+   :undoc-members:

test/py/tests/test_000_version.py

@@ -2,10 +2,12 @@
 # Copyright (c) 2015 Stephen Warren
 # Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
 
-# pytest runs tests the order of their module path, which is related to the
-# filename containing the test. This file is named such that it is sorted
-# first, simply as a very basic sanity check of the functionality of the U-Boot
-# command prompt.
+"""
+pytest runs tests the order of their module path, which is related to the
+filename containing the test. This file is named such that it is sorted
+first, simply as a very basic sanity check of the functionality of the U-Boot
+command prompt.
+"""
 
 def test_version(ubman):
     """Test that the "version" command prints the U-Boot version."""