Re: Extension coverage

Not sure I follow. Do you have an example that I could check?
I have the impression that my problem is that no .gcda files are created.
If I just run the lcov part:
lcov -d . -c -o lcov.info

I get
Found gcov version: 5.4.0
Scanning . for .gcda files ...
geninfo: WARNING: no .gcda files found in . - skipping!
Finished .info-file creation

and an empty file lcov.info is created.

Just to check, I've tried running make coverage and make coverage-html on
the folder of postgres instead of the extension and that works.

On 26 August 2017 at 06:40, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
wrote:

> On Sat, Aug 26, 2017 at 2:59 AM, Gabriel Furstenheim Milerud
> <furstenheim(at)gmail(dot)com> wrote:
> > The I built my extension against this postgres server
> >
> > $ cd $EXTENSION_SOURCE_DIR
> > $ make install && make installcheck
> >
> > the extension is built fine and the test run. However, I see no
> difference
> > with a normal installation without the flag.
> >
> > Then I run the following target
> > (https://stackoverflow.com/questions/31417900/how-to-run-
> coverage-report-on-a-postgres-extension)
> > coverage:
> > lcov --no-external -d . -c -o lcov.info
> > genhtml --show-details --legend --output-directory=coverage
> > --title=PostgreSQL --num-spaces=4 --prefix=./src/ `find . -name
> lcov.info
> > -print`
> >
> > But it complains that there are no .gcda files
> > geninfo: WARNING: no .gcda files found in . - skipping!
> > and it errors.
> > genhtml: ERROR: no valid records found in tracefile ./lcov.info
> >
> > Is this the way to measure coverage on an extension? Am I missing some
> step?
>
> This error is a bit weird, what you are showing here has nothing
> wrong. I do work with this coverage target and postgres extensions,
> and the following steps allow me to generate a text report of coverage
> when compiling any extension with a Postgres build having
> --enable-coverage:
> make install
> make installcheck
> make coverage
> Trying to use coverage-html from an external extension leads to an error:
> $ make coverage-html
> rm -rf coverage
> mkdir coverage
> /home/ioltas/extra/bin/genhtml --show-details --legend
> --output-directory=coverage --title=PostgreSQL --num-spaces=4
> --prefix= `find . -name lcov.info -print`
> genhtml: Option prefix requires an argument
> Use genhtml --help to get usage information
>
> But this bit is easy enough to fix by enforcing the value of
> abs_top_srcdir when running the command "make coverage-html".
> --
> Michael
>