mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-10-31 00:32:38 +01:00
Added coverage.py, and optional coverage info to test.py
Now coverage information can be collected if you provide the --coverage to test.py. Internally this uses GCC's gcov instrumentation along with a new script, coverage.py, to parse *.gcov files. The main use for this is finding coverage info during CI runs. There's a risk that the instrumentation may make it more difficult to debug, so I decided to not make coverage collection enabled by default.
This commit is contained in:
Christopher Haster
413
scripts/coverage.py
Executable file
413
scripts/coverage.py
Executable file
@@ -0,0 +1,413 @@
|
||||
#!/usr/bin/env python3
|
||||
#
|
||||
|
||||
import os
|
||||
import glob
|
||||
import csv
|
||||
import re
|
||||
import collections as co
|
||||
import bisect as b
|
||||
|
||||
RESULTDIR = 'results'
|
||||
#RULES = """
|
||||
#define FLATTEN
|
||||
#%(sizedir)s/%(build)s.$(subst /,.,$(target)): $(target)
|
||||
# ( echo "#line 1 \\"$$<\\"" ; %(cat)s $$< ) > $$@
|
||||
#%(sizedir)s/%(build)s.$(subst /,.,$(target:.c=.size)): \\
|
||||
# %(sizedir)s/%(build)s.$(subst /,.,$(target:.c=.o))
|
||||
# $(NM) --size-sort $$^ | sed 's/^/$(subst /,\\/,$(target:.c=.o)):/' > $$@
|
||||
#endef
|
||||
#$(foreach target,$(SRC),$(eval $(FLATTEN)))
|
||||
#
|
||||
#-include %(sizedir)s/*.d
|
||||
#.SECONDARY:
|
||||
#
|
||||
#%%.size: $(foreach t,$(subst /,.,$(OBJ:.o=.size)),%%.$t)
|
||||
# cat $^ > $@
|
||||
#"""
|
||||
#CATS = {
|
||||
# 'code': 'cat',
|
||||
# 'code_inlined': 'sed \'s/^static\( inline\)\?//\'',
|
||||
#}
|
||||
#
|
||||
#def build(**args):
|
||||
# # mkdir -p sizedir
|
||||
# os.makedirs(args['sizedir'], exist_ok=True)
|
||||
#
|
||||
# if args.get('inlined', False):
|
||||
# builds = ['code', 'code_inlined']
|
||||
# else:
|
||||
# builds = ['code']
|
||||
#
|
||||
# # write makefiles for the different types of builds
|
||||
# makefiles = []
|
||||
# targets = []
|
||||
# for build in builds:
|
||||
# path = args['sizedir'] + '/' + build
|
||||
# with open(path + '.mk', 'w') as mk:
|
||||
# mk.write(RULES.replace(4*' ', '\t') % dict(
|
||||
# sizedir=args['sizedir'],
|
||||
# build=build,
|
||||
# cat=CATS[build]))
|
||||
# mk.write('\n')
|
||||
#
|
||||
# # pass on defines
|
||||
# for d in args['D']:
|
||||
# mk.write('%s: override CFLAGS += -D%s\n' % (
|
||||
# path+'.size', d))
|
||||
#
|
||||
# makefiles.append(path + '.mk')
|
||||
# targets.append(path + '.size')
|
||||
#
|
||||
# # build in parallel
|
||||
# cmd = (['make', '-f', 'Makefile'] +
|
||||
# list(it.chain.from_iterable(['-f', m] for m in makefiles)) +
|
||||
# [target for target in targets])
|
||||
# if args.get('verbose', False):
|
||||
# print(' '.join(shlex.quote(c) for c in cmd))
|
||||
# proc = sp.Popen(cmd,
|
||||
# stdout=sp.DEVNULL if not args.get('verbose', False) else None)
|
||||
# proc.wait()
|
||||
# if proc.returncode != 0:
|
||||
# sys.exit(-1)
|
||||
#
|
||||
# # find results
|
||||
# build_results = co.defaultdict(lambda: 0)
|
||||
# # notes
|
||||
# # - filters type
|
||||
# # - discards internal/debug functions (leading __)
|
||||
# pattern = re.compile(
|
||||
# '^(?P<file>[^:]+)' +
|
||||
# ':(?P<size>[0-9a-fA-F]+)' +
|
||||
# ' (?P<type>[%s])' % re.escape(args['type']) +
|
||||
# ' (?!__)(?P<name>.+?)$')
|
||||
# for build in builds:
|
||||
# path = args['sizedir'] + '/' + build
|
||||
# with open(path + '.size') as size:
|
||||
# for line in size:
|
||||
# match = pattern.match(line)
|
||||
# if match:
|
||||
# file = match.group('file')
|
||||
# # discard .8449 suffixes created by optimizer
|
||||
# name = re.sub('\.[0-9]+', '', match.group('name'))
|
||||
# size = int(match.group('size'), 16)
|
||||
# build_results[(build, file, name)] += size
|
||||
#
|
||||
# results = []
|
||||
# for (build, file, name), size in build_results.items():
|
||||
# if build == 'code':
|
||||
# results.append((file, name, size, False))
|
||||
# elif (build == 'code_inlined' and
|
||||
# ('inlined', file, name) not in results):
|
||||
# results.append((file, name, size, True))
|
||||
#
|
||||
# return results
|
||||
|
||||
def collect(covfuncs, covlines, path, **args):
|
||||
with open(path) as f:
|
||||
file = None
|
||||
filter = args['filter'].split() if args.get('filter') else None
|
||||
pattern = re.compile(
|
||||
'^(?P<file>file'
|
||||
':(?P<file_name>.*))' +
|
||||
'|(?P<func>function' +
|
||||
':(?P<func_lineno>[0-9]+)' +
|
||||
',(?P<func_hits>[0-9]+)' +
|
||||
',(?P<func_name>.*))' +
|
||||
'|(?P<line>lcount' +
|
||||
':(?P<line_lineno>[0-9]+)' +
|
||||
',(?P<line_hits>[0-9]+))$')
|
||||
for line in f:
|
||||
match = pattern.match(line)
|
||||
if match:
|
||||
if match.group('file'):
|
||||
file = match.group('file_name')
|
||||
# filter?
|
||||
if filter and file not in filter:
|
||||
file = None
|
||||
elif file is not None and match.group('func'):
|
||||
lineno = int(match.group('func_lineno'))
|
||||
name, hits = covfuncs[(file, lineno)]
|
||||
covfuncs[(file, lineno)] = (
|
||||
name or match.group('func_name'),
|
||||
hits + int(match.group('func_hits')))
|
||||
elif file is not None and match.group('line'):
|
||||
lineno = int(match.group('line_lineno'))
|
||||
covlines[(file, lineno)] += int(match.group('line_hits'))
|
||||
|
||||
def coverage(**args):
|
||||
# find *.gcov files
|
||||
gcovpaths = []
|
||||
for gcovpath in args.get('gcovpaths') or [args['results']]:
|
||||
if os.path.isdir(gcovpath):
|
||||
gcovpath = gcovpath + '/*.gcov'
|
||||
|
||||
for path in glob.glob(gcovpath):
|
||||
gcovpaths.append(path)
|
||||
|
||||
if not gcovpaths:
|
||||
print('no gcov files found in %r?'
|
||||
% (args.get('gcovpaths') or [args['results']]))
|
||||
sys.exit(-1)
|
||||
|
||||
# collect coverage info
|
||||
covfuncs = co.defaultdict(lambda: (None, 0))
|
||||
covlines = co.defaultdict(lambda: 0)
|
||||
for path in gcovpaths:
|
||||
collect(covfuncs, covlines, path, **args)
|
||||
|
||||
# merge? go ahead and handle that here, but
|
||||
# with a copy so we only report on the current coverage
|
||||
if args.get('merge', None):
|
||||
if os.path.isfile(args['merge']):
|
||||
accfuncs = covfuncs.copy()
|
||||
acclines = covlines.copy()
|
||||
collect(accfuncs, acclines, args['merge']) # don't filter!
|
||||
else:
|
||||
accfuncs = covfuncs
|
||||
acclines = covlines
|
||||
|
||||
accfiles = sorted({file for file, _ in acclines.keys()})
|
||||
accfuncs, i = sorted(accfuncs.items()), 0
|
||||
acclines, j = sorted(acclines.items()), 0
|
||||
with open(args['merge'], 'w') as f:
|
||||
for file in accfiles:
|
||||
f.write('file:%s\n' % file)
|
||||
while i < len(accfuncs) and accfuncs[i][0][0] == file:
|
||||
((_, lineno), (name, hits)) = accfuncs[i]
|
||||
f.write('function:%d,%d,%s\n' % (lineno, hits, name))
|
||||
i += 1
|
||||
while j < len(acclines) and acclines[j][0][0] == file:
|
||||
((_, lineno), hits) = acclines[j]
|
||||
f.write('lcount:%d,%d\n' % (lineno, hits))
|
||||
j += 1
|
||||
|
||||
# annotate?
|
||||
if args.get('annotate', False):
|
||||
# annotate(covlines, **args)
|
||||
pass
|
||||
|
||||
# condense down to file/function results
|
||||
funcs = sorted(covfuncs.items())
|
||||
func_lines = [(file, lineno) for (file, lineno), _ in funcs]
|
||||
func_names = [name for _, (name, _) in funcs]
|
||||
def line_func(file, lineno):
|
||||
i = b.bisect(func_lines, (file, lineno))
|
||||
if i and func_lines[i-1][0] == file:
|
||||
return func_names[i-1]
|
||||
else:
|
||||
return '???'
|
||||
|
||||
func_results = co.defaultdict(lambda: (0, 0))
|
||||
for ((file, lineno), hits) in covlines.items():
|
||||
func = line_func(file, lineno)
|
||||
branch_hits, branches = func_results[(file, func)]
|
||||
func_results[(file, func)] = (branch_hits + (hits > 0), branches + 1)
|
||||
|
||||
results = []
|
||||
for (file, func), (hits, branches) in func_results.items():
|
||||
# discard internal/testing functions (test_* injected with
|
||||
# internal testing)
|
||||
if func == '???' or func.startswith('__') or func.startswith('test_'):
|
||||
continue
|
||||
# discard .8449 suffixes created by optimizer
|
||||
func = re.sub('\.[0-9]+', '', func)
|
||||
results.append((file, func, hits, branches))
|
||||
|
||||
return results
|
||||
|
||||
|
||||
def main(**args):
|
||||
# find coverage
|
||||
if not args.get('input', None):
|
||||
results = coverage(**args)
|
||||
else:
|
||||
with open(args['input']) as f:
|
||||
r = csv.DictReader(f)
|
||||
results = [
|
||||
( result['file'],
|
||||
result['function'],
|
||||
int(result['hits']),
|
||||
int(result['branches']))
|
||||
for result in r]
|
||||
|
||||
total_hits, total_branches = 0, 0
|
||||
for _, _, hits, branches in results:
|
||||
total_hits += hits
|
||||
total_branches += branches
|
||||
|
||||
# find previous results?
|
||||
if args.get('diff', None):
|
||||
with open(args['diff']) as f:
|
||||
r = csv.DictReader(f)
|
||||
prev_results = [
|
||||
( result['file'],
|
||||
result['function'],
|
||||
int(result['hits']),
|
||||
int(result['branches']))
|
||||
for result in r]
|
||||
|
||||
prev_total_hits, prev_total_branches = 0, 0
|
||||
for _, _, hits, branches in prev_results:
|
||||
prev_total_hits += hits
|
||||
prev_total_branches += branches
|
||||
|
||||
# write results to CSV
|
||||
if args.get('output', None):
|
||||
results.sort(key=lambda x: (-(x[2]/x[3]), -x[3], x))
|
||||
with open(args['output'], 'w') as f:
|
||||
w = csv.writer(f)
|
||||
w.writerow(['file', 'function', 'hits', 'branches'])
|
||||
for file, func, hits, branches in results:
|
||||
w.writerow((file, func, hits, branches))
|
||||
|
||||
# print results
|
||||
def dedup_entries(results, by='function'):
|
||||
entries = co.defaultdict(lambda: (0, 0))
|
||||
for file, func, hits, branches in results:
|
||||
entry = (file if by == 'file' else func)
|
||||
entry_hits, entry_branches = entries[entry]
|
||||
entries[entry] = (entry_hits + hits, entry_branches + branches)
|
||||
return entries
|
||||
|
||||
def diff_entries(olds, news):
|
||||
diff = co.defaultdict(lambda: (None, None, None, None, None, None))
|
||||
for name, (new_hits, new_branches) in news.items():
|
||||
diff[name] = (
|
||||
0, 0,
|
||||
new_hits, new_branches,
|
||||
new_hits, new_branches)
|
||||
for name, (old_hits, old_branches) in olds.items():
|
||||
new_hits = diff[name][2] or 0
|
||||
new_branches = diff[name][3] or 0
|
||||
diff[name] = (
|
||||
old_hits, old_branches,
|
||||
new_hits, new_branches,
|
||||
new_hits-old_hits, new_branches-old_branches)
|
||||
return diff
|
||||
|
||||
def print_header(by=''):
|
||||
if not args.get('diff', False):
|
||||
print('%-36s %11s' % (by, 'branches'))
|
||||
else:
|
||||
print('%-36s %11s %11s %11s' % (by, 'old', 'new', 'diff'))
|
||||
|
||||
def print_entries(by='function'):
|
||||
entries = dedup_entries(results, by=by)
|
||||
|
||||
if not args.get('diff', None):
|
||||
print_header(by=by)
|
||||
for name, (hits, branches) in sorted(entries.items(),
|
||||
key=lambda x: (-(x[1][0]-x[1][1]), -x[1][1], x)):
|
||||
print("%-36s %11s (%.2f%%)" % (name,
|
||||
'%d/%d' % (hits, branches),
|
||||
100*(hits/branches if branches else 1.0)))
|
||||
else:
|
||||
prev_entries = dedup_entries(prev_results, by=by)
|
||||
diff = diff_entries(prev_entries, entries)
|
||||
print_header(by='%s (%d added, %d removed)' % (by,
|
||||
sum(1 for _, old, _, _, _, _ in diff.values() if not old),
|
||||
sum(1 for _, _, _, new, _, _ in diff.values() if not new)))
|
||||
for name, (
|
||||
old_hits, old_branches,
|
||||
new_hits, new_branches,
|
||||
diff_hits, diff_branches) in sorted(diff.items(),
|
||||
key=lambda x: (
|
||||
-(x[1][4]-x[1][5]), -x[1][5], -x[1][3], x)):
|
||||
ratio = ((new_hits/new_branches if new_branches else 1.0)
|
||||
- (old_hits/old_branches if old_branches else 1.0))
|
||||
if diff_hits or diff_branches or args.get('all', False):
|
||||
print("%-36s %11s %11s %11s%s" % (name,
|
||||
'%d/%d' % (old_hits, old_branches)
|
||||
if old_branches else '-',
|
||||
'%d/%d' % (new_hits, new_branches)
|
||||
if new_branches else '-',
|
||||
'%+d/%+d' % (diff_hits, diff_branches),
|
||||
' (%+.2f%%)' % (100*ratio) if ratio else ''))
|
||||
|
||||
def print_totals():
|
||||
if not args.get('diff', None):
|
||||
print("%-36s %11s (%.2f%%)" % ('TOTALS',
|
||||
'%d/%d' % (total_hits, total_branches),
|
||||
100*(total_hits/total_branches if total_branches else 1.0)))
|
||||
else:
|
||||
ratio = ((total_hits/total_branches
|
||||
if total_branches else 1.0)
|
||||
- (prev_total_hits/prev_total_branches
|
||||
if prev_total_branches else 1.0))
|
||||
print("%-36s %11s %11s %11s%s" % ('TOTALS',
|
||||
'%d/%d' % (prev_total_hits, prev_total_branches),
|
||||
'%d/%d' % (total_hits, total_branches),
|
||||
'%+d/%+d' % (total_hits-prev_total_hits,
|
||||
total_branches-prev_total_branches),
|
||||
' (%+.2f%%)' % (100*ratio) if ratio else ''))
|
||||
|
||||
def print_status():
|
||||
if not args.get('diff', None):
|
||||
print("%d/%d (%.2f%%)" % (total_hits, total_branches,
|
||||
100*(total_hits/total_branches if total_branches else 1.0)))
|
||||
else:
|
||||
ratio = ((total_hits/total_branches
|
||||
if total_branches else 1.0)
|
||||
- (prev_total_hits/prev_total_branches
|
||||
if prev_total_branches else 1.0))
|
||||
print("%d/%d (%+.2f%%)" % (total_hits, total_branches,
|
||||
(100*ratio) if ratio else ''))
|
||||
|
||||
if args.get('quiet', False):
|
||||
pass
|
||||
elif args.get('status', False):
|
||||
print_status()
|
||||
elif args.get('summary', False):
|
||||
print_header()
|
||||
print_totals()
|
||||
elif args.get('files', False):
|
||||
print_entries(by='file')
|
||||
print_totals()
|
||||
else:
|
||||
print_entries(by='function')
|
||||
print_totals()
|
||||
|
||||
if __name__ == "__main__":
|
||||
import argparse
|
||||
import sys
|
||||
parser = argparse.ArgumentParser(
|
||||
description="Show/manipulate coverage info")
|
||||
parser.add_argument('gcovpaths', nargs='*',
|
||||
help="Description of *.gcov files to use for coverage info. May be \
|
||||
a directory or list of files. Coverage files will be merged to \
|
||||
show the total coverage. Defaults to \"%s\"." % RESULTDIR)
|
||||
parser.add_argument('--results', default=RESULTDIR,
|
||||
help="Directory to store results. Created implicitly. Used if \
|
||||
annotated files are requested. Defaults to \"%s\"." % RESULTDIR)
|
||||
parser.add_argument('--merge',
|
||||
help="Merge coverage info into the specified file, writing the \
|
||||
cumulative coverage info to the file. The output from this script \
|
||||
does not include the coverage from the merge file.")
|
||||
parser.add_argument('--filter',
|
||||
help="Specify files with care about, all other coverage info (system \
|
||||
headers, test framework, etc) will be discarded.")
|
||||
parser.add_argument('--annotate', action='store_true',
|
||||
help="Output annotated source files into the result directory. Each \
|
||||
line will be annotated with the number of hits during testing. \
|
||||
This is useful for finding out which lines do not have test \
|
||||
coverage.")
|
||||
parser.add_argument('-v', '--verbose', action='store_true',
|
||||
help="Output commands that run behind the scenes.")
|
||||
parser.add_argument('-i', '--input',
|
||||
help="Don't do any work, instead use this CSV file.")
|
||||
parser.add_argument('-o', '--output',
|
||||
help="Specify CSV file to store results.")
|
||||
parser.add_argument('-d', '--diff',
|
||||
help="Specify CSV file to diff code size against.")
|
||||
parser.add_argument('-a', '--all', action='store_true',
|
||||
help="Show all functions, not just the ones that changed.")
|
||||
parser.add_argument('--files', action='store_true',
|
||||
help="Show file-level coverage.")
|
||||
parser.add_argument('-s', '--summary', action='store_true',
|
||||
help="Only show the total coverage.")
|
||||
parser.add_argument('-S', '--status', action='store_true',
|
||||
help="Show minimum info useful for a single-line status.")
|
||||
parser.add_argument('-q', '--quiet', action='store_true',
|
||||
help="Don't show anything, useful with -o.")
|
||||
sys.exit(main(**vars(parser.parse_args())))
|
||||
Reference in New Issue
Block a user