b6bc9d72f6
This is step 4 of https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
//===-- Unittests for vprintf --------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// These tests are copies of the non-v variants of the printf functions. This is
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// because these functions are identical in every way except for how the varargs
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// are passed.
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#include "src/stdio/vprintf.h"
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#include "test/UnitTest/Test.h"
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int call_vprintf(const char *__restrict format, ...) {
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va_list vlist;
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va_start(vlist, format);
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int ret = LIBC_NAMESPACE::vprintf(format, vlist);
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va_end(vlist);
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return ret;
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}
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TEST(LlvmLibcVPrintfTest, PrintOut) {
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int written;
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constexpr char simple[] = "A simple string with no conversions.\n";
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written = call_vprintf(simple);
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EXPECT_EQ(written, static_cast<int>(sizeof(simple) - 1));
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constexpr char numbers[] = "1234567890\n";
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written = call_vprintf("%s", numbers);
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EXPECT_EQ(written, static_cast<int>(sizeof(numbers) - 1));
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constexpr char format_more[] = "%s and more\n";
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constexpr char short_numbers[] = "1234";
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written = call_vprintf(format_more, short_numbers);
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EXPECT_EQ(written,
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static_cast<int>(sizeof(format_more) + sizeof(short_numbers) - 4));
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}
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