# Copyright © 2012, 2020, 2022-2024 Nick Bowler
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

AT_BANNER([Stress tests])

dnl Verify the RNG implementation
TEST_TAP_SIMPLE([xoshiro256p sanity], [rng-test],
  [TEST_NEED_PROGRAM([rng-test])])

dnl Verify that randomdecl actually produces all keywords and a variety
dnl of different declarations.
AT_SETUP([randomdecl sanity])

TEST_NEED_PROGRAM([randomdecl])

m4_define([sanity_tests], [dnl
  [[^declare], [declaration of an identifier]],
  [[^type], [type name]],
  [[inline], [inline function specifier]],
  [[inline inline], [redundant function specifiers]],
  [[function [(]@<:@]]RE_ALNUM()_[[@:>@* as], [named function parameter]],
  [[function [(]void[)]], [empty prototype declaration]],
  [[function returning], [non-prototype function declaration]],
  [[\.\.\.], [variadic function]],
  [[const], [const qualifier]],
  [[volatile], [volatile qualifier]],
  [[restrict], [restrict qualifier]],
  [[const const], [redundant type qualifiers]],
  [[variable-length array], [variable-length array]],
  [[static], [static storage-class specifier]],
  [[extern], [extern storage-class specifier]],
  [[typedef], [typedef storage-class specifier]],
  [[auto], [auto storage-class specifier]],
  [[register], [register storage-class specifier]],
  [[void], [void type specifier]],
  [[char], [char type specifier]],
  [[short], [short type specifier]],
  [[int], [int type specifier]],
  [[long], [long type specifier]],
  [[float], [float type specifier]],
  [[double], [double type specifier]],
  [[signed], [signed type specifier]],
  [[unsigned], [unsigned type specifier]],
  [[_Bool], [_Bool type specifier]],
  [[_Complex], [_Complex type specifier]],
  [[_Imaginary], [_Imaginary type specifier]],
  [[union], [union type specifier]],
  [[enum], [enum type specifier]],
  [[pointer to array], [pointer to an array]],
  [[pointer to function], [pointer to a function]],
])

m4_define([sanity_awk], [[/$1/ { found["$2"] = 1; }
]])AT_DATA([sanity.awk],
[# We don't need any field splitting, so choose a character that does not
# appear in C code to avoid tripping over 199-field limit in HP-UX 11 awk.
BEGIN { FS = "@"; }
m4_map([sanity_awk], [sanity_tests])dnl
END { for (k in found) print "FOUND", k; }
])

m4_define([sanity_exp], [[FOUND $2
]])
LC_ALL=C sort >expout <<'EOF'
m4_map([sanity_exp], [sanity_tests])dnl
EOF

AS_ECHO(["Using seed $random_seed"]) >&AS_MESSAGE_LOG_FD
AT_CHECK([randomdecl -En 10000 -s "$random_seed" >decls], [0])
AT_CHECK([$AWK -f sanity.awk decls | LC_ALL=C sort], [0], [expout])

AT_CLEANUP

AT_SETUP([Random crossparse])

TEST_NEED_PROGRAM([randomdecl])
TEST_NEED_PROGRAM([crossparse])

AS_ECHO(["Using seed $random_seed"]) >&AS_MESSAGE_LOG_FD
AT_CHECK([randomdecl -n "$random_iter" -s "$random_seed"],, [stdout-nolog])
AT_CHECK([crossparse -f stdout])
AT_CLEANUP

# Check that we can parse declarations with more than 10000 specifiers.
AT_SETUP([Excessive specifiers])

AT_CHECK([gunzip -c "$srcdir/tests/data/manyspec.gz" >test.dat || exit 77
cdecl99 -f test.dat], [0],
[[type const int
type const int
const int
const int
inline int f()
]])

AT_CLEANUP

# Check that we can parse declarations with more than 10000 declarators.
AT_SETUP([Excessive declarators])

AT_DATA([check.awk],
[[# We don't need any field splitting, so choose a character that does not
# appear in C code to avoid tripping over 199-field limit in HP-UX 11 awk.
BEGIN { FS = "@"; runstart = 0; }
END { finish_run(NR); }

$0 != lastline {
  finish_run(NR-1);
  lastline = $0;
  runstart = NR;
  print;
}

function finish_run(nr) {
  count = nr - runstart;
  if (count > 0)
    print "[repeated " count " more times]";
}
]])

AT_CHECK([gunzip -c "$srcdir/tests/data/manydecl.gz" >test.dat || exit 77
cdecl99 -f test.dat >test.out; status=$?;
tr <test.out ',' '
' | $AWK -f check.awk
exit $status], [0],
[[declare a as int
[repeated 16383 more times]
type function (a
 a
[repeated 16381 more times]
 a) returning int
int (a
 a
[repeated 16381 more times]
 a)
]])

AT_CLEANUP