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| -rwxr-xr-x | contrib/coverage-diff.sh | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/contrib/coverage-diff.sh b/contrib/coverage-diff.sh new file mode 100755 index 0000000000..4ec419f900 --- /dev/null +++ b/contrib/coverage-diff.sh @@ -0,0 +1,108 @@ +#!/bin/sh + +# Usage: Run 'contrib/coverage-diff.sh <version1> <version2>' from source-root +# after running +# +# make coverage-test +# make coverage-report +# +# while checked out at <version2>. This script combines the *.gcov files +# generated by the 'make' commands above with 'git diff <version1> <version2>' +# to report new lines that are not covered by the test suite. + +V1=$1 +V2=$2 + +diff_lines () { + perl -e ' + my $line_num; + while (<>) { + # Hunk header? Grab the beginning in postimage. + if (/^@@ -\d+(?:,\d+)? \+(\d+)(?:,\d+)? @@/) { + $line_num = $1; + next; + } + + # Have we seen a hunk? Ignore "diff --git" etc. + next unless defined $line_num; + + # Deleted line? Ignore. + if (/^-/) { + next; + } + + # Show only the line number of added lines. + if (/^\+/) { + print "$line_num\n"; + } + # Either common context or added line appear in + # the postimage. Count it. + $line_num++; + } + ' +} + +files=$(git diff --name-only "$V1" "$V2" -- \*.c) + +# create empty file +>coverage-data.txt + +for file in $files +do + git diff "$V1" "$V2" -- "$file" | + diff_lines | + sort >new_lines.txt + + if ! test -s new_lines.txt + then + continue + fi + + hash_file=$(echo $file | sed "s/\//\#/") + + if ! test -s "$hash_file.gcov" + then + continue + fi + + sed -ne '/#####:/{ + s/ #####:// + s/:.*// + s/ //g + p + }' "$hash_file.gcov" | + sort >uncovered_lines.txt + + comm -12 uncovered_lines.txt new_lines.txt | + sed -e 's/$/\)/' | + sed -e 's/^/ /' >uncovered_new_lines.txt + + grep -q '[^[:space:]]' <uncovered_new_lines.txt && + echo $file >>coverage-data.txt && + git blame -s "$V2" -- "$file" | + sed 's/\t//g' | + grep -f uncovered_new_lines.txt >>coverage-data.txt && + echo >>coverage-data.txt + + rm -f new_lines.txt uncovered_lines.txt uncovered_new_lines.txt +done + +cat coverage-data.txt + +echo "Commits introducing uncovered code:" + +commit_list=$(cat coverage-data.txt | + grep -E '^[0-9a-f]{7,} ' | + awk '{print $1;}' | + sort | + uniq) + +( + for commit in $commit_list + do + git log --no-decorate --pretty=format:'%an %h: %s' -1 $commit + echo + done +) | sort + +rm coverage-data.txt |