mirror of https://gitee.com/openkylin/ldb.git
30 lines
830 B
Plaintext
30 lines
830 B
Plaintext
Here is how to use gcov to test code coverage in ldb.
|
|
|
|
Step 1: build ldb with gcov enabled
|
|
|
|
make clean all WITH_GCOV=1
|
|
|
|
Step 3: run the test suite
|
|
make test-tdb
|
|
|
|
Step 4: produce the gcov report
|
|
make gcov
|
|
|
|
Step 5: read the summary reports
|
|
less *.report.gcov
|
|
|
|
Step 6: examine the per-file reports
|
|
less ldb_tdb\#ldb_tdb.c.gcov
|
|
|
|
You can also combine steps 2 to 4 like this:
|
|
|
|
make clean all test-tdb gcov WITH_GCOV=1
|
|
|
|
Note that you should not expect 100% coverage, as some error paths
|
|
(such as memory allocation failures) are very hard to trigger. There
|
|
are ways of working around this, but they are quite tricky (they
|
|
involve allocation wrappers that "fork and fail on malloc").
|
|
|
|
The lines to look for in the per-file reports are the ones starting
|
|
with "#####". Those are lines that are never executed.
|