Here's a proposed module to test 'intprops'. It assumes the revised patch for integer overflow checking that I emailed a few minutes ago.
I don't know the recommended way to test this with gnulib-tool; I read the --help output and the documentation, but couldn't figure it out. I tested it by hand, though. New module 'intprops-tests'. * modules/intprops-tests, tests/test-intprops.c: New files. diff --git a/modules/intprops-tests b/modules/intprops-tests new file mode 100644 index 0000000..4aa04d9 --- /dev/null +++ b/modules/intprops-tests @@ -0,0 +1,13 @@ +Files: +tests/test-intprops.c + +Depends-on: +inttypes +stdbool +verify + +configure.ac: + +Makefile.am: +TESTS += test-intprops +check_PROGRAMS += test-intprops diff --git a/tests/test-intprops.c b/tests/test-intprops.c new file mode 100644 index 0000000..f0d6437 --- /dev/null +++ b/tests/test-intprops.c @@ -0,0 +1,250 @@ +/* Test intprops.h. + Copyright (C) 2011 Free Software Foundation, Inc. + + 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 <http://www.gnu.org/licenses/>. */ + +/* Written by Paul Eggert. */ + +#include <config.h> + +#include "intprops.h" +#include "verify.h" + +#include <stdbool.h> +#include <inttypes.h> + +/* TYPE_IS_INTEGER. */ +verify (TYPE_IS_INTEGER (bool)); +verify (TYPE_IS_INTEGER (char)); +verify (TYPE_IS_INTEGER (signed char)); +verify (TYPE_IS_INTEGER (unsigned char)); +verify (TYPE_IS_INTEGER (short int)); +verify (TYPE_IS_INTEGER (unsigned short int)); +verify (TYPE_IS_INTEGER (int)); +verify (TYPE_IS_INTEGER (unsigned int)); +verify (TYPE_IS_INTEGER (long int)); +verify (TYPE_IS_INTEGER (unsigned long int)); +verify (TYPE_IS_INTEGER (intmax_t)); +verify (TYPE_IS_INTEGER (uintmax_t)); +verify (! TYPE_IS_INTEGER (float)); +verify (! TYPE_IS_INTEGER (double)); +verify (! TYPE_IS_INTEGER (long double)); + +/* Integer representation. */ +verify (INT_MIN + INT_MAX < 0 + ? (TYPE_TWOS_COMPLEMENT (int) + && ! TYPE_ONES_COMPLEMENT (int) && ! TYPE_SIGNED_MAGNITUDE (int)) + : (! TYPE_TWOS_COMPLEMENT (int) + && (TYPE_ONES_COMPLEMENT (int) || TYPE_SIGNED_MAGNITUDE (int)))); + +/* TYPE_SIGNED. */ +/* verify (! TYPE_SIGNED (bool)); */ /* not guaranteed by gnulib substitute */ +verify (TYPE_SIGNED (signed char)); +verify (! TYPE_SIGNED (unsigned char)); +verify (TYPE_SIGNED (short int)); +verify (! TYPE_SIGNED (unsigned short int)); +verify (TYPE_SIGNED (int)); +verify (! TYPE_SIGNED (unsigned int)); +verify (TYPE_SIGNED (long int)); +verify (! TYPE_SIGNED (unsigned long int)); +verify (TYPE_SIGNED (intmax_t)); +verify (! TYPE_SIGNED (uintmax_t)); + +/* TYPE_MINIMUM, TYPE_MAXIMUM. */ +verify (TYPE_MINIMUM (char) == CHAR_MIN); +verify (TYPE_MAXIMUM (char) == CHAR_MAX); +verify (TYPE_MINIMUM (unsigned char) == 0); +verify (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX); +verify (TYPE_MINIMUM (signed char) == SCHAR_MIN); +verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX); +verify (TYPE_MINIMUM (short int) == SHRT_MIN); +verify (TYPE_MAXIMUM (short int) == SHRT_MAX); +verify (TYPE_MINIMUM (unsigned short int) == 0); +verify (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX); +verify (TYPE_MINIMUM (int) == INT_MIN); +verify (TYPE_MAXIMUM (int) == INT_MAX); +verify (TYPE_MINIMUM (unsigned int) == 0); +verify (TYPE_MAXIMUM (unsigned int) == UINT_MAX); +verify (TYPE_MINIMUM (long int) == LONG_MIN); +verify (TYPE_MAXIMUM (long int) == LONG_MAX); +verify (TYPE_MINIMUM (unsigned long int) == 0); +verify (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX); +verify (TYPE_MINIMUM (intmax_t) == INTMAX_MIN); +verify (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX); +verify (TYPE_MINIMUM (uintmax_t) == 0); +verify (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX); + +/* INT_BITS_STRLEN_BOUND. */ +verify (INT_BITS_STRLEN_BOUND (1) == 1); +verify (INT_BITS_STRLEN_BOUND (2620) == 789); + +/* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND. */ +#ifdef INT32_MAX +verify (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1); +verify (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648")); +#endif +#ifdef INT64_MAX +verify (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1); +verify (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808")); +#endif + +/* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as + INT_<op>_OVERFLOW tests, so define a single macro to do both. */ +#define check_binop(op, a, b, min, max, overflow) \ + (INT_##op##_RANGE_OVERFLOW (a, b, min, max) == (overflow) \ + && INT_##op##_OVERFLOW (a, b) == (overflow)) +#define check_unop(op, a, min, max, overflow) \ + (INT_##op##_RANGE_OVERFLOW (a, min, max) == (overflow) \ + && INT_##op##_OVERFLOW (a) == (overflow)) + +/* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW. */ +verify (INT_SUM_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX)); +verify (INT_SUM_OVERFLOW (INT_MAX, 1)); +verify (check_binop (SUM, INT_MAX, 1, INT_MIN, INT_MAX, true)); +verify (check_binop (SUM, INT_MAX, -1, INT_MIN, INT_MAX, false)); +verify (check_binop (SUM, INT_MIN, 1, INT_MIN, INT_MAX, false)); +verify (check_binop (SUM, INT_MIN, -1, INT_MIN, INT_MAX, true)); +verify (check_binop (SUM, UINT_MAX, 1u, 0u, UINT_MAX, true)); +verify (check_binop (SUM, 0u, 1u, 0u, UINT_MAX, false)); + +verify (check_binop (DIFFERENCE, INT_MAX, 1, INT_MIN, INT_MAX, false)); +verify (check_binop (DIFFERENCE, INT_MAX, -1, INT_MIN, INT_MAX, true)); +verify (check_binop (DIFFERENCE, INT_MIN, 1, INT_MIN, INT_MAX, true)); +verify (check_binop (DIFFERENCE, INT_MIN, -1, INT_MIN, INT_MAX, false)); +verify (check_binop (DIFFERENCE, UINT_MAX, 1u, 0u, UINT_MAX, false)); +verify (check_binop (DIFFERENCE, 0u, 1u, 0u, UINT_MAX, true)); + +verify (check_unop (NEGATIVE, INT_MIN, INT_MIN, INT_MAX, + TYPE_TWOS_COMPLEMENT (int))); +verify (check_unop (NEGATIVE, 0, INT_MIN, INT_MAX, false)); +verify (check_unop (NEGATIVE, INT_MAX, INT_MIN, INT_MAX, false)); +verify (check_unop (NEGATIVE, 0u, 0u, UINT_MAX, false)); +verify (check_unop (NEGATIVE, 1u, 0u, UINT_MAX, true)); +verify (check_unop (NEGATIVE, UINT_MAX, 0u, UINT_MAX, true)); + +verify (check_binop (PRODUCT, INT_MAX, INT_MAX, INT_MIN, INT_MAX, true)); +verify (check_binop (PRODUCT, INT_MAX, INT_MIN, INT_MIN, INT_MAX, true)); +verify (check_binop (PRODUCT, INT_MIN, INT_MAX, INT_MIN, INT_MAX, true)); +verify (check_binop (PRODUCT, INT_MIN, INT_MIN, INT_MIN, INT_MAX, true)); +verify (check_binop (PRODUCT, -1, INT_MIN, INT_MIN, INT_MAX, + INT_NEGATIVE_OVERFLOW (INT_MIN))); +verify (check_binop (PRODUCT, LONG_MIN / INT_MAX, (long int) INT_MAX, + LONG_MIN, LONG_MIN, false)); + +verify (check_binop (QUOTIENT, INT_MIN, -1, INT_MIN, INT_MAX, + INT_NEGATIVE_OVERFLOW (INT_MIN))); +verify (check_binop (QUOTIENT, INT_MAX, 1, INT_MIN, INT_MAX, false)); +verify (check_binop (QUOTIENT, (unsigned int) INT_MIN, + -1u, 0u, UINT_MAX, false)); + +verify (check_binop (REMAINDER, INT_MIN, -1, INT_MIN, INT_MAX, + INT_NEGATIVE_OVERFLOW (INT_MIN))); +verify (check_binop (REMAINDER, INT_MAX, 1, INT_MIN, INT_MAX, false)); +verify (check_binop (REMAINDER, (unsigned int) INT_MIN, + -1u, 0u, UINT_MAX, false)); + +verify (check_binop (LEFT_SHIFT, UINT_MAX, 1, 0u, UINT_MAX, true)); +verify (check_binop (LEFT_SHIFT, UINT_MAX / 2 + 1, 1, 0u, UINT_MAX, true)); +verify (check_binop (LEFT_SHIFT, UINT_MAX / 2, 1, 0u, UINT_MAX, false)); + +/* INT_<op>_OVERFLOW with mixed types. */ +#define check_sum(a, b, overflow) \ + verify (INT_SUM_OVERFLOW (a, b) == (overflow)); \ + verify (INT_SUM_OVERFLOW (b, a) == (overflow)) +check_sum (-1, LONG_MIN, true); +check_sum (-1, UINT_MAX, false); +check_sum (-1L, INT_MIN, INT_MIN == LONG_MIN); +check_sum (0u, -1, true); +check_sum (0u, 0, false); +check_sum (0u, 1, false); +check_sum (1, LONG_MAX, true); +check_sum (1, UINT_MAX, true); +check_sum (1L, INT_MAX, INT_MAX == LONG_MAX); +check_sum (1u, INT_MAX, INT_MAX == UINT_MAX); +check_sum (1u, INT_MIN, true); + +verify (! INT_DIFFERENCE_OVERFLOW (INT_MAX, 1u)); +verify (! INT_DIFFERENCE_OVERFLOW (UINT_MAX, 1)); +verify (! INT_DIFFERENCE_OVERFLOW (0u, -1)); +verify (INT_DIFFERENCE_OVERFLOW (UINT_MAX, -1)); +verify (INT_DIFFERENCE_OVERFLOW (INT_MIN, 1u)); +verify (INT_DIFFERENCE_OVERFLOW (-1, 0u)); + +#define check_product(a, b, overflow) \ + verify (INT_PRODUCT_OVERFLOW (a, b) == (overflow)); \ + verify (INT_PRODUCT_OVERFLOW (b, a) == (overflow)) + +check_product (-1, 1u, true); +check_product (-1, INT_MIN, INT_NEGATIVE_OVERFLOW (INT_MIN)); +check_product (-1, UINT_MAX, true); +check_product (-12345, LONG_MAX / -12345 - 1, true); +check_product (-12345, LONG_MAX / -12345, false); +check_product (0, -1, false); +check_product (0, 0, false); +check_product (0, 0u, false); +check_product (0, 1, false); +check_product (0, INT_MAX, false); +check_product (0, INT_MIN, false); +check_product (0, UINT_MAX, false); +check_product (0u, -1, false); +check_product (0u, 0, false); +check_product (0u, 0u, false); +check_product (0u, 1, false); +check_product (0u, INT_MAX, false); +check_product (0u, INT_MIN, false); +check_product (0u, UINT_MAX, false); +check_product (1, INT_MAX, false); +check_product (1, INT_MIN, false); +check_product (1, UINT_MAX, false); +check_product (1u, INT_MIN, true); +check_product (1u, INT_MAX, UINT_MAX < INT_MAX); +check_product (INT_MAX, UINT_MAX, true); +check_product (INT_MAX, ULONG_MAX, true); +check_product (INT_MIN, LONG_MAX / INT_MIN - 1, true); +check_product (INT_MIN, LONG_MAX / INT_MIN, false); +check_product (INT_MIN, UINT_MAX, true); +check_product (INT_MIN, ULONG_MAX, true); + +verify (INT_QUOTIENT_OVERFLOW (INT_MIN, -1L) + == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN)); +verify (! INT_QUOTIENT_OVERFLOW (INT_MIN, UINT_MAX)); +verify (! INT_QUOTIENT_OVERFLOW (INTMAX_MIN, UINTMAX_MAX)); +verify (! INT_QUOTIENT_OVERFLOW (INTMAX_MIN, UINT_MAX)); +verify (INT_QUOTIENT_OVERFLOW (-11, 10u)); +verify (INT_QUOTIENT_OVERFLOW (-10, 10u)); +verify (! INT_QUOTIENT_OVERFLOW (-9, 10u)); +verify (INT_QUOTIENT_OVERFLOW (11u, -10)); +verify (INT_QUOTIENT_OVERFLOW (10u, -10)); +verify (! INT_QUOTIENT_OVERFLOW (9u, -10)); + +verify (INT_REMAINDER_OVERFLOW (INT_MIN, -1L) + == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN)); +verify (INT_REMAINDER_OVERFLOW (-1, UINT_MAX)); +verify (INT_REMAINDER_OVERFLOW ((intmax_t) -1, UINTMAX_MAX)); +verify (INT_REMAINDER_OVERFLOW (INTMAX_MIN, UINT_MAX) + == (INTMAX_MAX < UINT_MAX + && - (unsigned int) INTMAX_MIN % UINT_MAX != 0)); +verify (INT_REMAINDER_OVERFLOW (INT_MIN, ULONG_MAX) + == (INT_MIN % ULONG_MAX != 1)); +verify (! INT_REMAINDER_OVERFLOW (1u, -1)); +verify (! INT_REMAINDER_OVERFLOW (37*39u, -39)); +verify (INT_REMAINDER_OVERFLOW (37*39u + 1, -39)); +verify (INT_REMAINDER_OVERFLOW (37*39u - 1, -39)); +verify (! INT_REMAINDER_OVERFLOW (LONG_MAX, -INT_MAX)); + +int +main (void) +{ + return 0; +}
