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//===-- Unittests for vasprintf--------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/stdio/vasprintf.h"
#include "src/string/memset.h"
#include "test/UnitTest/Test.h"
int call_vasprintf(char **__restrict buffer, const char *__restrict format,
...) {
va_list vlist;
va_start(vlist, format);
int ret = LIBC_NAMESPACE::vasprintf(buffer, format, vlist);
va_end(vlist);
return ret;
}
TEST(LlvmLibcVASPrintfTest, SimpleNoConv) {
char *buff = nullptr;
int written;
written = call_vasprintf(&buff, "A simple string with no conversions.");
EXPECT_EQ(written, 36);
ASSERT_STREQ(buff, "A simple string with no conversions.");
free(buff);
}
TEST(LlvmLibcVASPrintfTest, PercentConv) {
char *buff = nullptr;
int written;
written = call_vasprintf(&buff, "%%");
EXPECT_EQ(written, 1);
ASSERT_STREQ(buff, "%");
free(buff);
written = call_vasprintf(&buff, "abc %% def");
EXPECT_EQ(written, 9);
ASSERT_STREQ(buff, "abc % def");
free(buff);
written = call_vasprintf(&buff, "%%%%%%");
EXPECT_EQ(written, 3);
ASSERT_STREQ(buff, "%%%");
free(buff);
}
TEST(LlvmLibcVASPrintfTest, CharConv) {
char *buff = nullptr;
int written;
written = call_vasprintf(&buff, "%c", 'a');
EXPECT_EQ(written, 1);
ASSERT_STREQ(buff, "a");
free(buff);
written = call_vasprintf(&buff, "%3c %-3c", '1', '2');
EXPECT_EQ(written, 7);
ASSERT_STREQ(buff, " 1 2 ");
free(buff);
written = call_vasprintf(&buff, "%*c", 2, '3');
EXPECT_EQ(written, 2);
ASSERT_STREQ(buff, " 3");
free(buff);
}
TEST(LlvmLibcVASPrintfTest, LargeStringNoConv) {
char *buff = nullptr;
char long_str[1001];
LIBC_NAMESPACE::memset(long_str, 'a', 1000);
long_str[1000] = '\0';
int written;
written = call_vasprintf(&buff, long_str);
EXPECT_EQ(written, 1000);
ASSERT_STREQ(buff, long_str);
free(buff);
}
TEST(LlvmLibcVASPrintfTest, ManyReAlloc) {
char *buff = nullptr;
const int expected_num_chars = 600;
int written = call_vasprintf(&buff, "%200s%200s%200s", "", "", "");
EXPECT_EQ(written, expected_num_chars);
bool isPadding = true;
for (int i = 0; i < expected_num_chars; i++) {
if (buff[i] != ' ') {
isPadding = false;
break;
}
}
EXPECT_TRUE(isPadding);
free(buff);
}
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