nova/tools/regression_tester.py
Joe Gordon 336eed6b24 Update tools/regression_tester
* Clarify wording (don't use 'success' and 'failure' instead use 'found'
  and 'no regression test')
* If don't pass gerrit review number run on current branch.  In
  preparation for running via jenkins.
* If no tests were changed, don't run any tests

Change-Id: I5e876e4e5071fc27461d2411fc33db1bf1724405
2013-02-12 17:13:21 -08:00

82 lines
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Python
Executable File

#!/usr/bin/env python
"""Tool for checking if patch contains a regression test.
Pass in gerrit review number as parameter, tool will download branch and run
modified tests without bug fix.
"""
import string
import subprocess
import sys
gerrit_number = None
#TODO(jogo) use proper optParser
if len(sys.argv) == 2:
gerrit_number = sys.argv[1]
else:
gerrit_number = None
print ("no gerrit review number specified, running on latest commit"
"on current branch.")
def run(cmd, fail_ok=False):
print "running: %s" % cmd
try:
rval = subprocess.check_output(cmd, shell=True)
except subprocess.CalledProcessError:
if not fail_ok:
print "The command above terminated with an error."
sys.exit(1)
pass
return rval
test_works = False
if gerrit_number:
original_branch = run("git rev-parse --abbrev-ref HEAD")
run("git review -d %s" % gerrit_number)
# run new tests with old code
run("git checkout HEAD^ nova")
run("git checkout HEAD nova/tests")
# identify which tests have changed
tests = run("git whatchanged --format=oneline -1 | grep \"nova/tests\" "
"| cut -f2").split()
test_list = []
for test in tests:
test_list.append(string.replace(test[0:-3], '/', '.'))
if test_list == []:
test_works = False
expect_failure = ""
else:
# run new tests, expect them to fail
expect_failure = run(("tox -epy27 %s 2>&1" % string.join(test_list)),
fail_ok=True)
if "FAILED (id=" in expect_failure:
test_works = True
# cleanup
run("git checkout HEAD nova")
if gerrit_number:
new_branch = run("git status | head -1 | cut -d ' ' -f 4")
run("git checkout %s" % original_branch)
run("git branch -D %s" % new_branch)
if test_works:
print expect_failure
print ""
print "*******************************"
print "FOUND a regression test"
else:
print expect_failure
print ""
print "*******************************"
print "NO regression test"
sys.exit(1)