def compare_gcov(fname, dir_base, dir_unit, dir_diff=None):
gcov_base = read_gcov.read_gcov(os.path.join(dir_base, fname))
gcov_unit = read_gcov.read_gcov(os.path.join(dir_unit, fname))
gcov_diff = compute_gcov_diff(gcov_base, gcov_unit)
if dir_diff and gcov_diff:
out_fname = os.path.join(dir_diff, fname)
read_gcov.write_gcov(gcov_diff, open(out_fname, 'w'))
def handle_uncovered(gcov_base, fname, dir_diff, always_copy=False):
# Need to see if there are any covered lines in the file
file_coverage = get_total_covered_lines(gcov_base)
if always_copy or file_coverage.covered > 0:
gcov_diff = mark_as_uncovered(gcov_base)
out_fname = os.path.join(dir_diff, fname)
if gcov_diff:
read_gcov.write_gcov(gcov_diff, open(out_fname, 'w'))
def merge_two_gcov_files(fname1, fname2, output_fname):
gcov1 = read_gcov.read_gcov(fname1)
gcov2 = read_gcov.read_gcov(fname2)
source_file1 = gcov1.tags['Source']
source_file2 = gcov2.tags['Source']
if source_file1 != source_file2:
print 'Source files do not match', source_file1, source_file2
return
gcov_out = merge_two_gcovs(gcov1, gcov2)
out_f = sys.stdout
if output_fname:
out_f = open(output_fname, 'w')
read_gcov.write_gcov(gcov_out, out_f)
def compare_gcov_files(both, only_base, only_unit, base_gcov_map,
unit_gcov_map, dir_unit, dir_diff):
for fname in both:
gcov_base = base_gcov_map[fname]
gcov_unit = unit_gcov_map[fname]
gcov_diff = compute_gcov_diff(gcov_base, gcov_unit)
out_fname = os.path.join(dir_diff, fname)
if gcov_diff:
read_gcov.write_gcov(gcov_diff, open(out_fname, 'w'))
# completely uncovered in unit tests
# Assign all to unit tests
# Assign to diff only if some coverage in base
for fname in only_base:
gcov_base = base_gcov_map[fname]
handle_uncovered(gcov_base, fname, dir_diff)
handle_uncovered(gcov_base, fname, dir_unit, always_copy=True)
def merge_gcov_files(fnames, output_fname, src_prefix_to_add=None):
gcovs = [read_gcov.read_gcov(f) for f in fnames]
source_names = [g.tags['Source'] for g in gcovs]
for source in source_names[1:]:
if source_names[0] != source:
print 'Source file names do not match', source_names[0], source
return
gcov_out = merge_gcovs(gcovs)
# The gcov '--source-prefix' options strips a directory from the file name and the
# 'Source' tag. Restore it to the tag so gcovr can find the source file.
if src_prefix_to_add is not None:
src_filename = gcov_out.tags['Source']
gcov_out.tags['Source'] = os.path.join(src_prefix_to_add, src_filename)
out_f = sys.stdout
if output_fname:
out_f = open(output_fname, 'w')
read_gcov.write_gcov(gcov_out, out_f)