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#!/usr/bin/env python3
# author: Ole Schuett
import sys
import subprocess
from os import path
from pprint import pformat
from datetime import datetime
# ===============================================================================
def main():
if len(sys.argv) != 3:
print("Usage test_coverage.py <reference-file> <lcov-file>")
sys.exit(1)
print("Date: {:%Y-%m-%d %H:%M:%S}".format(datetime.utcnow()))
git_rev = subprocess.check_output(["git", "rev-parse", "--short", "HEAD"])
print("Git Commit: {}".format(git_rev))
ref_fn, lcov_fn = sys.argv[1:]
content = open(lcov_fn, encoding="utf8").read()
lines = content.split("\n")
assert lines[2] == "=" * 80
assert lines[-3] == "=" * 80
assert lines[3][0] == "["
coverage = {}
for l in lines[4:-3]:
assert len(l.strip()) > 0
assert l[0] != "["
parts = [p.strip() for p in l.split("|")]
rate, nlines = parts[1].split()
assert rate[-1] == "%"
coverage[parts[0]] = (float(rate[:-1]), int(nlines))
if not path.exists(ref_fn):
open(ref_fn, "w", encoding="utf8").write(pformat(coverage))
print("Summary: Wrote new reference file")
print("Status: UNKNOWN")
sys.exit(0)
ref_coverage = eval(open(ref_fn, encoding="utf8").read())
issues = 0
new_ref_coverage = dict()
for fn in coverage.keys():
cov_rate, nlines = coverage[fn]
uncov_lines = nlines * (100.0 - cov_rate) / 100.0
if fn in ref_coverage:
cov_rate0, nlines0 = ref_coverage[fn]
uncov_lines0 = nlines0 * (100.0 - cov_rate0) / 100.0
tol = max(nlines, nlines0) * 0.001 # uncov_lines has limited precision
if uncov_lines - uncov_lines0 > tol and cov_rate < cov_rate0:
issues += 1
print(
'Coverage of file "%s" decreased from %.1f%% to %.1f%%.'
% (fn, cov_rate0, cov_rate)
)
print(
'Number of untests lines of file "%s" increased from %d to %d.'
% (fn, uncov_lines0, uncov_lines)
)
new_ref_coverage[fn] = (cov_rate0, nlines0)
else:
new_ref_coverage[fn] = (cov_rate, nlines)
else:
if cov_rate < 90.0:
issues += 1
print('New file "%s" has only %.1f%% coverage.' % (fn, cov_rate))
else:
new_ref_coverage[fn] = (cov_rate, nlines)
assert "Total:" in lines[-2]
total_coverage = float(lines[-2].split("|")[1].split("%")[0])
print(
"Summary: Found %d issues, total coverage is at %.1f%%."
% (issues, total_coverage)
)
print("Status: " + ("OK" if (issues == 0) else "FAILED"))
open(ref_fn, "w", encoding="utf8").write(pformat(new_ref_coverage))
# ===============================================================================
main()
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