56b7cc79c6
Tool detects if a gerrit patch contains tests to detect a regression Usage: ./tools/regression_tester.py gerrit_review_number Change-Id: I6353d1efda73fe5fc3098f928b6da9a28eb40590
68 lines
1.7 KiB
Python
Executable File
68 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python
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"""Tool for checking if patch contains a regression test.
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Pass in gerrit review number as parameter, tool will download branch and run
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modified tests without bug fix.
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"""
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import string
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import subprocess
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import sys
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#TODO(jogo) use proper optParser
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gerrit_number = sys.argv[1]
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def run(cmd, fail_ok=False):
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print "running: %s" % cmd
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try:
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rval = subprocess.check_output(cmd, shell=True)
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except subprocess.CalledProcessError:
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if not fail_ok:
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print "the above command terminated with an error"
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sys.exit(1)
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pass
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return rval
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test_works = False
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original_branch = run("git rev-parse --abbrev-ref HEAD")
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run("git review -d %s" % gerrit_number)
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# run new tests with old code
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run("git checkout HEAD^ nova")
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run("git checkout HEAD nova/tests")
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# identify which tests have changed
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tests = run("git whatchanged --format=oneline -1 | grep \"nova/tests\" "
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"| cut -f2").split()
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test_list = []
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for test in tests:
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test_list.append(string.replace(test[0:-3], '/', '.'))
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# run new tests, expect them to fail
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expect_failure = run(("tox -epy27 %s 2>&1" % string.join(test_list)),
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fail_ok=True)
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if "FAILED (id=" in expect_failure:
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test_works = True
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# cleanup
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run("git checkout HEAD nova")
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new_branch = run("git status | head -1 | cut -d ' ' -f 4")
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run("git checkout %s" % original_branch)
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run("git branch -D %s" % new_branch)
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if test_works:
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print expect_failure
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print ""
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print "*******************************"
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print "SUCCESS: test covers regression"
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else:
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print expect_failure
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print ""
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print "***************************************"
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print "FAILURE: test does not cover regression"
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sys.exit(1)
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