dnl Copyright © 2019 Nick Bowler
dnl
dnl License WTFPL2: Do What The Fuck You Want To Public License, version 2.
dnl This is free software: you are free to do what the fuck you want to.
dnl There is NO WARRANTY, to the extent permitted by law.

AT_BANNER([Library tests])

dnl TEST_DUMMY_PKGCONFIG([cflags], [libs])
dnl
dnl Create a hack pkg-config script in the current working directory which
dnl responds to --cflags and --libs with the provided values.  The macro
dnl arguments should each be a single shell word, suitable for the right
dnl hand side of a shell assignment.
m4_define([TEST_DUMMY_PKGCONFIG],
[[cat >pkg-config <<EOF
#!/bin/sh
cflags= libs=
for arg
do
  case \$arg in
  --cflags) cflags=]$1[;;
  --libs) libs=]$2[;;
  esac
done
printf '%s %s\n' "\$cflags" "\$libs"
EOF
chmod +x pkg-config
]])

AT_SETUP([libdiscid probes])
AT_KEYWORDS([libdiscid])

mkdir discid
AT_DATA([discid/discid.h],
[[typedef void DiscId;
DiscId *discid_new(void);
void discid_free(DiscId *);
#ifndef DISCID_VERSION_MAJOR
#  define DISCID_VERSION_MAJOR 2
#endif
]])

AT_DATA([test.in],
[[@HAVE_LIBDISCID@
@LIBDISCID_CFLAGS@
@LIBDISCID_LIBS@
]])

TEST_CONFIGURE_AC([[DX_LIB_LIBDISCID([1.2.3], [HAVE_LIBDISCID=yes],
                                              [HAVE_LIBDISCID=no])
AC_SUBST([HAVE_LIBDISCID])
AC_CONFIG_FILES([test])
]])
TEST_AUTORECONF

# Check the search via explicit flags
TEST_CONFIGURE([LIBDISCID_CFLAGS=-I. LIBDISCID_LIBS="$builddir/t/libdummy.a"])
AT_CHECK_UNQUOTED([cat test], [0], [yes
-I.
$builddir/t/libdummy.a
])

# Check the search via pkg-config
TEST_DUMMY_PKGCONFIG([-I.], [$builddir/t/libdummy.a])
TEST_CONFIGURE([PKG_CONFIG=$PWD/pkg-config])
AT_CHECK_UNQUOTED([cat test], [0], [yes
-I.
$builddir/t/libdummy.a
])

# Check the default -ldiscid search
cp "$builddir/t/libdummy.a" libdiscid.a
TEST_CONFIGURE([PKG_CONFIG=false CFLAGS=-I. LDFLAGS=-L.])
AT_CHECK_UNQUOTED([cat test], [0], [yes

-ldiscid
])

# Check the failure case
TEST_CONFIGURE([PKG_CONFIG=false CFLAGS='-I. -DDISCID_VERSION_MAJOR=0'])
AT_CHECK_UNQUOTED([cat test], [0], [no


])

AT_CLEANUP