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-rw-r--r--doc/develop/py_testing.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/develop/py_testing.rst b/doc/develop/py_testing.rst
index 4f1e1f6..52238ca 100644
--- a/doc/develop/py_testing.rst
+++ b/doc/develop/py_testing.rst
@@ -103,6 +103,13 @@ will be written to `${build_dir}/test-log.html`. This is best viewed in a web
browser, but may be read directly as plain text, perhaps with the aid of the
`html2text` utility.
+Controlling output
+~~~~~~~~~~~~~~~~~~
+
+By default a short backtrace is reported. If you would like a longer one,
+pass ``--tb=long`` when running the test. See the pytest documentation for
+more options.
+
Running tests in parallel
~~~~~~~~~~~~~~~~~~~~~~~~~