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/*
* Copyright (c) 2022, Daniel Bertalan <dani@danielbertalan.dev>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <stdio.h>
#include <sys/wait.h>
#include <unistd.h>
// Test whether file writes are flushed to disk at program termination,
// even if we do not close the files or call fflush().
TEST_CASE(flush_on_exit)
{
static constexpr auto test_str = "peekaboo";
auto pid = fork();
VERIFY(pid >= 0);
if (pid == 0) {
auto* fp = fopen("/tmp/flushtest", "w");
VERIFY(fp != nullptr);
auto nwritten = fwrite(test_str, 1, strlen(test_str), fp);
VERIFY(nwritten != 0);
// We intentionally leak `fp` here.
exit(0);
} else {
int wstatus;
auto rc = waitpid(pid, &wstatus, 0);
VERIFY(rc >= 0);
char buf[256];
auto* fp = fopen("/tmp/flushtest", "r");
VERIFY(fp != nullptr);
auto* sp = fgets(buf, sizeof(buf), fp);
VERIFY(sp != nullptr);
fclose(fp);
unlink("/tmp/flushtest");
EXPECT_EQ(strcmp(test_str, buf), 0);
}
}
TEST_CASE(sprintf_sign)
{
char buf1[128];
int ret1 = sprintf(buf1, "%+d", 12);
EXPECT_EQ(ret1, 3);
char buf2[128];
int ret2 = sprintf(buf2, "%+d", -12);
EXPECT_EQ(ret2, 3);
EXPECT_EQ(buf1, "+12"sv);
EXPECT_EQ(buf2, "-12"sv);
}
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