[dm-devel] [PATCH 01/12] Unit tests for basenamecpy

[Martin Wilck]

On Mon, 2018-03-19 at 10:49 +0100, Martin Wilck wrote:
> On Wed, 2018-03-14 at 12:46 -0500, Benjamin Marzinski wrote:
> > The current implementation of basenamecpy is broken, so some of
> > these
> > tests currently fail. Fixes to follow.
> > 
> > Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
> > ---
> >  tests/Makefile |   2 +-
> >  tests/util.c   | 167
> > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 168 insertions(+), 1 deletion(-)
> >  create mode 100644 tests/util.c
> > 
> > +static void test_basenamecpy_good6(void **state)
> > +{
> > +        char dst[6];
> > +
> > +        assert_int_equal(basenamecpy("/xyzzy/plugh   ", dst,
> > sizeof(dst)), 5);
> > +        assert_string_equal(dst, "plugh");
> > +}
> 
> This deserves explanation. "basename" wouldn't normally strip
> trailing
> whitespace.
> 
> > +/* ends in slash */
> > +static void test_basenamecpy_bad1(void **state)
> > +{
> > +        char dst[10];
> > +
> > +        assert_int_equal(basenamecpy("foo/bar/", dst,
> > sizeof(dst)),
> > 0);
> 
> This, too, deviates from standard "basename" behavior and should be
> explained ("basename /usr/" yields "usr", so does "basename
> /usr///").

I didn't realize the difference between POSIX "basename" and GNU
"basename", and was mislead by the shell behavior. So this and the
following nitpick about "/" can be disregarded. But please add a
comment for the whitespace stripping.

Apart from that, ACK.

Martin

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