add --slowest flag to testr

with --slowest flag, the slowest unit test cases will be printed,
which is useful to check performance issue.

Change-Id: I282845967877ed9298ca6f7f8bd6699a118fec1a

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 56a4320..a7835c8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,7 @@ setenv = VIRTUAL_ENV={envdir}
 
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --testr-args='{posargs}'
+commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
 commands =