如何获得文件夹的全局测试覆盖率？

Question

When showing code coverage, go test show code coverage for each package (in percentage).

Is there a way to show a summary for a folder that is taking all subfolder (subpackage) into account?

What I want is a global code coverage percentage for the full project, one number that show code coverage of the folder and all subfolders.

Answer 1

I found a solution to my problem.

I first run the test on all package and store the test result in a file :

go test --coverprofile=coverage.out ./...

I then run a bash script to calculate my result

#!/usr/bin/env bash

covered=0
total=0
while IFS='' read -r line || [[ -n "$line" ]]; do
    IFS=' ' read -r -a array <<< "$line"
    total=$(($total+${array[1]}))
    if [ "${array[2]}" = "1" ]; then
        covered=$(($covered+${array[1]}))
    fi 
done < "$1"
echo $(awk "BEGIN { pc=100*${covered}/${total}; i=int(pc); print (pc-i<0.5)?i:i+1 }")