| //===-- 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"); |
| } |