lcov version 2.0-1 does not report branch coverage

[pavelsaman]

I have an example lcov file:

lcov.tar.gz

Then I try to show coverages including the branch coverage:

$ lcov --version
lcov: LCOV version 2.0-1
pavel@home: ~/testing/total-coverage $ lcov --list lcov.info --rc branch_coverage=1
            |Lines       |Functions  |Branches    
Filename    |Rate     Num|Rate    Num|Rate     Num
==================================================
[apps/api/src/]
a.ts        |24.0%    104| 971%    17|    -      0
b.ts        |56.5%     23|1760%     5|    -      0
c.ts        |27.8%     36|1029%     7|    -      0
==================================================
      Total:|29.4%    163|1121%    29|    -      0
$ lcov-1.16/bin/lcov --version
lcov: LCOV version 1.16
pavel@home: ~/testing/total-coverage $ lcov-1.16/bin/lcov --list lcov.info --rc lcov_branch_coverage=1
Reading tracefile lcov.info
            |Lines       |Functions  |Branches    
Filename    |Rate     Num|Rate    Num|Rate     Num
==================================================
[apps/api/src/]
a.ts        |67.5%    154|68.0%    25|59.4%    165
b.ts        |31.9%     72|38.5%    13|28.4%     88
c.ts        |85.7%     42|70.0%    10|59.7%     72
==================================================
      Total:|60.8%    268|60.4%    48|51.1%    325

I also tried using lcov_branch_coverage=1 with version 2 but it only says this option is deprecated and it does not report branch coverage either:

$ lcov --list lcov.info --rc lcov_branch_coverage=1
lcov: WARNING: RC option 'lcov_branch_coverage' is deprecated.  Consider using 'branch_coverage. instead.  (Backward-compatible support will be removed in the future
            |Lines       |Functions  |Branches    
Filename    |Rate     Num|Rate    Num|Rate     Num
==================================================
[apps/api/src/]
a.ts        |24.0%    104| 971%    17|    -      0
b.ts        |56.5%     23|1760%     5|    -      0
c.ts        |27.8%     36|1029%     7|    -      0
==================================================
      Total:|29.4%    163|1121%    29|    -      0

In both /etc/lcovrc and ~/.lcovrc I have:

branch_coverage = 1

Also notice how the line and function coverage differ. But it's the same lcov file, just a different version of lcov. Should the coverage stats be the same? If not, why are they different when the input data is the same? I don't see any differences in output between versions 1.15 and 1.16.

[henry2cox]

The bug is in the 'list' routine. Data itself and the other generated reports (say,HTML) appear to be correct. I will push a fix after some other tests complete.

[henry2cox]

should be fixed in ded2e949a54be2381ec20b3a509db767ba7f3eb3

Is that turns out to work for you - please go ahead and close this issue. Thanks Henry

[pavelsaman]

LGTM, the output is now the same is in version 1.16:

$ bin/lcov --version
lcov: LCOV version 2.0-48-gded2e94
pavel@home: ~/Desktop/lcov $ bin/lcov --rc branch_coverage=1 --list lcov.info 
            |Lines       |Functions  |Branches    
Filename    |Rate     Num|Rate    Num|Rate     Num
==================================================
[apps/api/src/]
a.ts        |67.5%    154|68.0%    25|59.4%    165
b.ts        |31.9%     72|38.5%    13|28.4%     88
c.ts        |85.7%     42|70.0%    10|59.7%     72
==================================================
      Total:|60.8%    268|60.4%    48|51.1%    325

Thank you for fast resolution.