re-implement compare-results.sh as compare-results.py

The compare-results.sh is annoyingly slow. Since our ttcn3 tests containers
support Python 2, re-implement in Python for much quicker evaluation.

Change-Id: I0747c9d66ffc7e4121497a2416fca78d7b56c8e6

1 files changed, 137 insertions, 0 deletions

diff --git a/compare-results.py b/compare-results.py
new file mode 100755
index 00000000..d1adb20c
--- /dev/null
+++ b/compare-results.py
@@ -0,0 +1,137 @@
+#!/usr/bin/env python
+# Copyright 2018 sysmocom - s.f.m.c. GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import argparse
+import re
+
+doc = "Compare TTCN3 test run results with expected results by junit logs."
+
+# The nicest would be to use an XML library, but I don't want to introduce dependencies on the build slaves.
+re_testcase = re.compile(r'''<testcase classname=['"]([^'"]+)['"].* name=['"]([^'"]+)['"].*>''')
+re_testcase_end = re.compile(r'''(</testcase>|<testcase [^>]*/>)''')
+re_failure = re.compile(r'''(<failure\b|<error\b)''')
+
+RESULT_PASS = 'pass'
+RESULT_FAIL = 'pass->FAIL'
+RESULT_SKIP = 'skip'
+RESULT_XFAIL = 'xfail'
+RESULT_FIXED = 'xfail->PASS'
+RESULT_NEW_PASS = 'NEW: PASS'
+RESULT_NEW_FAIL = 'NEW: FAIL'
+
+RESULTS = (
+	RESULT_FAIL,
+	RESULT_NEW_FAIL,
+	RESULT_XFAIL,
+	RESULT_FIXED,
+	RESULT_PASS,
+	RESULT_NEW_PASS,
+	RESULT_SKIP,
+	)
+
+def count(counter, name, result):
+	v = counter.get(result) or 0
+	v += 1
+	counter[result] = v
+	if result != RESULT_SKIP:
+		print('%s %s' % (result, name))
+
+def compare_one(name, expect, result, counter):
+	if result is None:
+		count(counter, name, RESULT_SKIP)
+	elif result == RESULT_PASS:
+		if expect == RESULT_PASS:
+			count(counter, name, RESULT_PASS)
+		elif expect == RESULT_FAIL:
+			count(counter, name, RESULT_FIXED)
+		elif expect is None:
+			count(counter, name, RESULT_NEW_PASS)
+	elif result == RESULT_FAIL:
+		if expect == RESULT_PASS:
+			count(counter, name, RESULT_FAIL)
+		elif expect == RESULT_FAIL:
+			count(counter, name, RESULT_XFAIL)
+		elif expect is None:
+			count(counter, name, RESULT_NEW_FAIL)
+
+def compare(cmdline, f_expected, f_current):
+	expected_list = parse_results(f_expected)
+	current_list = parse_results(f_current)
+
+	expected_dict = dict(expected_list)
+	current_dict = dict(current_list)
+
+	counter = {}
+
+	for expected_name, expected_result in expected_list:
+		compare_one(expected_name, expected_result, current_dict.get(expected_name), counter)
+
+	# Also count new tests
+	for current_name, current_result in current_list:
+		if current_name in expected_dict:
+			continue
+		compare_one(current_name, None, current_result, counter)
+
+
+	print('\nSummary:')
+	for r in RESULTS:
+		v = counter.get(r)
+		if not v:
+			continue
+		print('  %s: %d' % (r, v))
+	print('\n')
+
+def parse_results(f):
+	tests = []
+	name = None
+	result = None
+	for line in f:
+		m = re_testcase.search(line)
+		if m:
+			class_name, test_name = m.groups()
+			name = '%s.%s' % (class_name, test_name)
+
+		m = re_failure.search(line)
+		if m:
+			result = RESULT_FAIL
+
+		m = re_testcase_end.search(line)
+		if m:
+			if not name:
+				continue
+			if result is None:
+				result = RESULT_PASS
+			tests.append((name, result))
+
+			name = None
+			result = None
+
+	return tests
+
+def main(cmdline):
+	with open(cmdline.expected_results, 'r') as f_expected:
+		with open(cmdline.current_results, 'r') as f_current:
+			print('\nComparing expected results %r against results in %r\n--------------------'
+				% (cmdline.expected_results, cmdline.current_results))
+			compare(cmdline, f_expected, f_current)
+
+if __name__ == '__main__':
+	parser = argparse.ArgumentParser(description=doc)
+	parser.add_argument('expected_results', metavar='expected.junit-xml',
+			help='junit XML file listing the expected test results.')
+	parser.add_argument('current_results', metavar='current.junit-xml',
+			help='junit XML file listing the current test results.')
+
+	cmdline = parser.parse_args()
+	main(cmdline)