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cde3509664
* bugprone-branch-clone * bugprone-copy-constructor-init * bugprone-empty-catch * bugprone-sizeof-expression * bugprone-switch-missing-default-case * bugprone-unused-local-non-trivial-variable * clang-analyzer-core.uninitialized.Assign * clang-analyzer-cplusplus.Move * clang-analyzer-optin.cplusplus.VirtualCall * modernize-loop-convert * modernize-raw-string-literal * modernize-use-equals-default * modernize-use-override * modernize-use-using * performance-avoid-endl * performance-inefficient-string-concatenation * performance-inefficient-vector-operation * performance-noexcept-move-constructor * performance-unnecessary-value-param (and improve generator example) * readability-duplicate-include * readability-inconsistent-declaration-parameter-name * readability-non-const-parameter * readability-redundant-casting * readability-redundant-member-init * readability-redundant-smartptr-get * readability-static-accessed-through-instance * unused variable in amalgamted tests
64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
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// Copyright Catch2 Authors
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.txt or copy at
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// https://www.boost.org/LICENSE_1_0.txt)
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// SPDX-License-Identifier: BSL-1.0
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// 231-Cfg-OutputStreams.cpp
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// Show how to replace the streams with a simple custom made streambuf.
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// Note that this reimplementation _does not_ follow `std::cerr`
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// semantic, because it buffers the output. For most uses however,
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// there is no important difference between having `std::cerr` buffered
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// or unbuffered.
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#include <catch2/catch_test_macros.hpp>
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#include <sstream>
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#include <cstdio>
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class out_buff : public std::stringbuf {
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std::FILE* m_stream;
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public:
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out_buff(std::FILE* stream):m_stream(stream) {}
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~out_buff() override;
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int sync() override {
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int ret = 0;
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for (unsigned char c : str()) {
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if (putc(c, m_stream) == EOF) {
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ret = -1;
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break;
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}
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}
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// Reset the buffer to avoid printing it multiple times
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str("");
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return ret;
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}
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};
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out_buff::~out_buff() { pubsync(); }
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#if defined(__clang__)
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#pragma clang diagnostic ignored "-Wexit-time-destructors" // static variables in cout/cerr/clog
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#endif
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namespace Catch {
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std::ostream& cout() {
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static std::ostream ret(new out_buff(stdout));
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return ret;
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}
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std::ostream& clog() {
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static std::ostream ret(new out_buff(stderr));
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return ret;
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}
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std::ostream& cerr() {
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return clog();
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}
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}
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TEST_CASE("This binary uses putc to write out output", "[compilation-only]") {
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SUCCEED("Nothing to test.");
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}
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