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//===-- Unittests for asprintf--------------------------------------------===//
//
// 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/asprintf.h"
#include "src/stdio/sprintf.h"
#include "src/string/memset.h"
#include "test/UnitTest/Test.h"
TEST(LlvmLibcASPrintfTest, SimpleNoConv) {
char *buff = nullptr;
int written;
written =
LIBC_NAMESPACE::asprintf(&buff, "A simple string with no conversions.");
EXPECT_EQ(written, 36);
ASSERT_STREQ(buff, "A simple string with no conversions.");
free(buff);
}
TEST(LlvmLibcASPrintfTest, PercentConv) {
char *buff = nullptr;
int written;
written = LIBC_NAMESPACE::asprintf(&buff, "%%");
EXPECT_EQ(written, 1);
ASSERT_STREQ(buff, "%");
free(buff);
written = LIBC_NAMESPACE::asprintf(&buff, "abc %% def");
EXPECT_EQ(written, 9);
ASSERT_STREQ(buff, "abc % def");
free(buff);
written = LIBC_NAMESPACE::asprintf(&buff, "%%%%%%");
EXPECT_EQ(written, 3);
ASSERT_STREQ(buff, "%%%");
free(buff);
}
TEST(LlvmLibcASPrintfTest, CharConv) {
char *buff = nullptr;
int written;
written = LIBC_NAMESPACE::asprintf(&buff, "%c", 'a');
EXPECT_EQ(written, 1);
ASSERT_STREQ(buff, "a");
free(buff);
written = LIBC_NAMESPACE::asprintf(&buff, "%3c %-3c", '1', '2');
EXPECT_EQ(written, 7);
ASSERT_STREQ(buff, " 1 2 ");
free(buff);
written = LIBC_NAMESPACE::asprintf(&buff, "%*c", 2, '3');
EXPECT_EQ(written, 2);
ASSERT_STREQ(buff, " 3");
free(buff);
}
TEST(LlvmLibcASPrintfTest, LargeStringNoConv) {
char *buff = nullptr;
char long_str[1001];
LIBC_NAMESPACE::memset(long_str, 'a', 1000);
long_str[1000] = '\0';
int written;
written = LIBC_NAMESPACE::asprintf(&buff, long_str);
EXPECT_EQ(written, 1000);
ASSERT_STREQ(buff, long_str);
free(buff);
}
TEST(LlvmLibcASPrintfTest, ManyReAlloc) {
char *buff = nullptr;
char long_str[1001];
// TODO: simplify test to match with vasprintf_test
auto expected_num_chars =
LIBC_NAMESPACE::sprintf(long_str, "%200s%200s%200s", "a", "b", "c");
long_str[expected_num_chars] = '\0';
int written;
written = LIBC_NAMESPACE::asprintf(&buff, long_str);
EXPECT_EQ(written, expected_num_chars);
ASSERT_STREQ(buff, long_str);
free(buff);
}
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