cosmopolitan/test/libc/runtime/grow_test.c
Justine Tunney 39bf41f4eb Make numerous improvements
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2021-09-28 01:52:34 -07:00

100 lines
3.8 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/pushpop.h"
#include "libc/limits.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
#include "libc/nt/enum/version.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
TEST(grow, testNull_hasAllocatingBehavior) {
void *p = NULL;
size_t capacity = 0;
EXPECT_TRUE(__grow(&p, &capacity, 1, 0));
EXPECT_NE(NULL, p);
EXPECT_EQ(32, capacity);
free_s(&p);
}
TEST(grow, testCapacity_isInUnits_withTerminatorGuarantee) {
void *p = NULL;
size_t capacity = 0;
EXPECT_TRUE(__grow(&p, &capacity, 8, 0));
EXPECT_NE(NULL, p);
EXPECT_EQ(32 / 8 + 1, capacity);
free_s(&p);
}
TEST(grow, testStackMemory_convertsToDynamic) {
int A[] = {1, 2, 3};
int *p = A;
size_t capacity = ARRAYLEN(A);
if (!_isheap(p)) {
EXPECT_TRUE(__grow(&p, &capacity, sizeof(int), 0));
EXPECT_TRUE(_isheap(p));
EXPECT_GT(capacity, ARRAYLEN(A));
EXPECT_EQ(1, p[0]);
EXPECT_EQ(2, p[1]);
EXPECT_EQ(3, p[2]);
p[0] = 7;
EXPECT_EQ(1, A[0]);
free(p);
}
}
TEST(grow, testGrowth_clearsNewMemory) {
size_t i, capacity = 123;
char *p = malloc(capacity);
memset(p, 'a', capacity);
EXPECT_TRUE(__grow(&p, &capacity, 1, 0));
EXPECT_GT(capacity, 123);
for (i = 0; i < 123; ++i) ASSERT_EQ('a', p[i]);
for (i = 123; i < capacity; ++i) ASSERT_EQ(0, p[i]);
free_s(&p);
}
TEST(grow, testBonusParam_willGoAboveAndBeyond) {
size_t capacity = 32;
char *p = malloc(capacity);
EXPECT_TRUE(__grow(&p, &capacity, 1, 0));
EXPECT_LT(capacity, 1024);
free_s(&p);
p = malloc((capacity = 32));
EXPECT_TRUE(__grow(&p, &capacity, 1, 1024));
EXPECT_GT(capacity, 1024);
free_s(&p);
}
TEST(grow, testOverflow_returnsFalseAndDoesNotFree) {
int A[] = {1, 2, 3};
int *p = A;
size_t capacity = ARRAYLEN(A);
if (!_isheap(p)) {
EXPECT_FALSE(__grow(&p, &capacity, pushpop(SIZE_MAX), 0));
EXPECT_FALSE(_isheap(p));
EXPECT_EQ(capacity, ARRAYLEN(A));
EXPECT_EQ(1, p[0]);
EXPECT_EQ(2, p[1]);
EXPECT_EQ(3, p[2]);
free_s(&p);
}
}