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Diffstat (limited to '')
| -rw-r--r-- | lib/util/tests/binsearch.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/lib/util/tests/binsearch.c b/lib/util/tests/binsearch.c new file mode 100644 index 0000000..b3ecda1 --- /dev/null +++ b/lib/util/tests/binsearch.c @@ -0,0 +1,173 @@ +/* + Unix SMB/CIFS implementation. + + Tests for binsearch.h macros. + + Copyright Catalyst IT 2016. + + Written by Douglas Bagnall <douglas.bagnall@catalyst.net.nz> + + 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/>. +*/ + +#include "includes.h" +#include "lib/util/binsearch.h" +#include "torture/torture.h" +#include "torture/local/proto.h" + +static int int_cmp(int a, int b) +{ + return a - b; +} + +static int int_cmp_p(int a, int *b) +{ + return a - *b; +} + +static bool test_binsearch_v(struct torture_context *tctx) +{ + int array[] = { -11, -7, 0, 1, 723, 1000000}; + int misses[] = { -121, 17, -10, 10, -1, -723, 1000002}; + int i; + int *result = NULL; + + for (i = 0; i < ARRAY_SIZE(misses); i++) { + BINARY_ARRAY_SEARCH_V(array, ARRAY_SIZE(array), + misses[i], int_cmp, result); + torture_comment(tctx, "looking for misses[%d] == %d\n", i, misses[i]); + torture_assert(tctx, result == NULL, "failed to miss"); + } + + for (i = 0; i < ARRAY_SIZE(array); i++) { + BINARY_ARRAY_SEARCH_V(array, ARRAY_SIZE(array), + array[i], int_cmp, result); + torture_comment(tctx, "looking for array[%d] == %d, %p; got %p\n", + i, array[i], &array[i], result); + torture_assert(tctx, result == &array[i], + "failed to find element"); + } + return true; +} + +static bool test_binsearch_gte(struct torture_context *tctx) +{ + int array[] = { -11, -7, -7, -7, -1, 0, 0, 1, 723, 723, 723, + 724, 724, 10000}; + size_t a_len = ARRAY_SIZE(array); + int targets[] = { -121, -8, -7, -6, 17, -10, 10, -1, 723, + 724, 725, 10002, 10000, 0, -11, 1, 11}; + int i, j, target; + int *result = NULL, *next = NULL; + + for (i = 0; i < ARRAY_SIZE(targets); i++) { + target = targets[i]; + torture_comment(tctx, "looking for targets[%d] %d\n", + i, target); + + BINARY_ARRAY_SEARCH_GTE(array, a_len, target, + int_cmp_p, result, next); + + if (result == NULL) { + /* we think there is no exact match */ + for (j = 0; j < a_len; j++) { + if (target == array[j]) { + torture_comment(tctx, + "failed to find %d\n", + targets[i]); + torture_fail(tctx, + "result is wrongly NULL"); + } + } + if (next != NULL) { + torture_assert(tctx, (next >= array && + next < array + a_len), + "next is out of bounds"); + + torture_assert(tctx, *next > target, + "next <= target"); + if (target <= array[0]) { + torture_assert(tctx, next == array, + "search before start failed"); + } + if (next != array) { + torture_assert(tctx, next[-1] < target, + "next[-1] >= target"); + } + } + else { + torture_assert(tctx, array[a_len - 1] < target, + "next was not found\n"); + } + } else { + /* we think we found an exact match */ + torture_assert(tctx, *result == target, + "result has wrong value"); + + torture_assert(tctx, (result >= array && + result < array + a_len), + "result is out of bounds!"); + + torture_assert(tctx, next == NULL, + "next should be NULL on exact match\n"); + if (result != array) { + torture_assert(tctx, result[-1] != target, + "didn't find first target\n"); + } + } + if (target >= array[a_len - 1]) { + torture_assert(tctx, next == NULL, + "next is not NULL at array end\n"); + } + } + + /* try again, with result and next the same pointer */ + for (i = 0; i < ARRAY_SIZE(targets); i++) { + target = targets[i]; + torture_comment(tctx, "looking for targets[%d] %d\n", + i, target); + + BINARY_ARRAY_SEARCH_GTE(array, a_len, target, + int_cmp_p, result, result); + + if (result == NULL) { + /* we think the target is greater than all elements */ + torture_assert(tctx, array[a_len - 1] < target, + "element >= target not found\n"); + } else { + /* we think an element is >= target */ + torture_assert(tctx, *result >= target, + "result has wrong value"); + + torture_assert(tctx, (result >= array && + result < array + a_len), + "result is out of bounds!"); + + if (result != array) { + torture_assert(tctx, result[-1] < target, + "didn't find first target\n"); + } + } + } + + return true; +} + +struct torture_suite *torture_local_util_binsearch(TALLOC_CTX *mem_ctx) +{ + struct torture_suite *suite = torture_suite_create(mem_ctx, "binsearch"); + torture_suite_add_simple_test(suite, "binsearch_v", test_binsearch_v); + torture_suite_add_simple_test(suite, "binsearch_gte", test_binsearch_gte); + return suite; +} |