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//===-- Unittests for vsprintf --------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// These tests are shortened copies of the non-v variants of the printf
// functions. This is because these functions are identical in every way except
// for how the varargs are passed.
#include "src/stdio/vsprintf.h"
#include "test/UnitTest/Test.h"
int call_vsprintf(char *__restrict buffer, const char *__restrict format, ...) {
va_list vlist;
va_start(vlist, format);
int ret = LIBC_NAMESPACE::vsprintf(buffer, format, vlist);
va_end(vlist);
return ret;
}
TEST(LlvmLibcVSPrintfTest, SimpleNoConv) {
char buff[64];
int written;
written = call_vsprintf(buff, "A simple string with no conversions.");
EXPECT_EQ(written, 36);
ASSERT_STREQ(buff, "A simple string with no conversions.");
}
TEST(LlvmLibcVSPrintfTest, PercentConv) {
char buff[64];
int written;
written = call_vsprintf(buff, "%%");
EXPECT_EQ(written, 1);
ASSERT_STREQ(buff, "%");
written = call_vsprintf(buff, "abc %% def");
EXPECT_EQ(written, 9);
ASSERT_STREQ(buff, "abc % def");
written = call_vsprintf(buff, "%%%%%%");
EXPECT_EQ(written, 3);
ASSERT_STREQ(buff, "%%%");
}
TEST(LlvmLibcVSPrintfTest, CharConv) {
char buff[64];
int written;
written = call_vsprintf(buff, "%c", 'a');
EXPECT_EQ(written, 1);
ASSERT_STREQ(buff, "a");
written = call_vsprintf(buff, "%3c %-3c", '1', '2');
EXPECT_EQ(written, 7);
ASSERT_STREQ(buff, " 1 2 ");
written = call_vsprintf(buff, "%*c", 2, '3');
EXPECT_EQ(written, 2);
ASSERT_STREQ(buff, " 3");
}
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