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 <[email protected]>
Reviewed-by: Simon Glass <[email protected]>

7 files changed, 27 insertions, 8 deletions

diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 5e1938b0526..9c136513bb9 100644
--- a/.azure-pipelines.yml
+++ b/.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
 
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6f11331514b..7aadd5d8b73 100644
--- a/.gitlab-ci.yml
+++ b/.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
 
diff --git a/Makefile b/Makefile
index 15c7e633b87..bd136a48982 100644
--- a/Makefile
+++ b/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
 
diff --git a/doc/conf.py b/doc/conf.py
index 3cb9b2bb65e..84d028feda8 100644
--- a/doc/conf.py
+++ b/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*
diff --git a/doc/develop/pytest/index.rst b/doc/develop/pytest/index.rst
index 435d84fc619..ca45e157d3b 100644
--- a/doc/develop/pytest/index.rst
+++ b/doc/develop/pytest/index.rst
@@ -10,3 +10,11 @@ General
    :maxdepth: 1
 
    usage
+
+Individual tests
+----------------
+
+.. toctree::
+   :maxdepth: 1
+
+   test_000_version
diff --git a/doc/develop/pytest/test_000_version.rst b/doc/develop/pytest/test_000_version.rst
new file mode 100644
index 00000000000..09e9a361729
--- /dev/null
+++ b/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:
diff --git a/test/py/tests/test_000_version.py b/test/py/tests/test_000_version.py
index b95ceae2346..63d392e956e 100644
--- a/test/py/tests/test_000_version.py
+++ b/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."""