merge_junit_results.py

#!/usr/bin/env python
#
#  Corey Goldberg, Dec 2012
#  Dmytro Makhno, Mar 2015
#

import os
import sys
import xml.etree.ElementTree as ET


"""Merge/Solder multiple JUnit XML files into a single results file.
If testcase exists in last result, do not add it again. Used in rerun.

Output dumps to sdtdout.

example usage:
    $ python merge_junit_results.py results1.xml results2.xml > results.xml
"""


def main():
    args = sys.argv[1:]
    if not args:
        usage()
        sys.exit(2)
    if '-h' in args or '--help' in args:
        usage()
        sys.exit(2)
    merge_results(args[:])


def merge_results(xml_files):
    failures = 0
    tests = 0
    errors = 0
    skips = 0
    cases = []

    def need_add(classname, name):
        return len([c for c in cases if c.attrib['classname'] == classname and c.attrib['name'] == name]) == 0

    xml_files.reverse()
    for file_name in xml_files:
        if not os.path.isfile(file_name):
            continue
        tree = ET.parse(file_name)
        test_suite = tree.getroot()
        failures = int(test_suite.attrib['failures'])
        tests = int(test_suite.attrib['tests'])
        errors = int(test_suite.attrib['errors'])
        skips = int(test_suite.attrib['skip'])
        for child in test_suite.getchildren():
            if need_add(child.attrib['classname'], child.attrib['name']):
                cases.append(child)

    new_root = ET.Element('testsuite')
    new_root.attrib['failures'] = '%s' % failures
    new_root.attrib['tests'] = '%s' % tests
    new_root.attrib['errors'] = '%s' % errors
    new_root.attrib['skip'] = '%s' % skips
    for case in cases:
        new_root.append(case)
    new_tree = ET.ElementTree(new_root)
    ET.dump(new_tree)


def usage():
    this_file = os.path.basename(__file__)
    print 'Usage:  %s results1.xml results2.xml' % this_file


if __name__ == '__main__':
    main()