doc: Explain briefly how to write new tests
Add a second on writing tests, covering when to use Python and C, where
to put the tests, etc. Add a link to the existing Python test
documentation.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/develop/tests_sandbox.rst b/doc/develop/tests_sandbox.rst
index dd15692..84608dc 100644
--- a/doc/develop/tests_sandbox.rst
+++ b/doc/develop/tests_sandbox.rst
@@ -200,3 +200,10 @@
000000000001f240 D _u_boot_list_2_dm_test_2_dm_test_of_plat_parent
000000000001f260 D _u_boot_list_2_dm_test_2_dm_test_of_plat_phandle
000000000001f280 D _u_boot_list_2_dm_test_2_dm_test_of_plat_props
+
+
+Writing tests
+-------------
+
+See :doc:`tests_writing` for how to write new tests.
+