libc/test/src/stdio/fputc_test.cpp

   1 //===-- Unittests for fputc / putchar -------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/__support/File/file.h"
  10 #include "src/stdio/fputc.h"
  11 #include "src/stdio/putchar.h"
  12
  13 #include "test/UnitTest/Test.h"
  14
  15 TEST(LlvmLibcPutcTest, PrintOut) {
  16   int result;
  17
  18   constexpr char simple[] = "A simple string written to stdout\n";
  19   for (const char &c : simple) {
  20     result = LIBC_NAMESPACE::putchar(c);
  21     EXPECT_GE(result, 0);
  22   }
  23
  24   constexpr char more[] = "A simple string written to stderr\n";
  25   for (const char &c : more) {
  26     result = LIBC_NAMESPACE::fputc(
  27         c, reinterpret_cast<FILE *>(LIBC_NAMESPACE::stderr));
  28   }
  29   EXPECT_GE(result, 0);
  30 }