326d97a9d1
The manipulator and formatter can be used to ensure a certain piece of output ends with a newline without introducing duplicate newline characters if the previous output ended with a newline already.
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
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* Copyright Andrey Semashev 2019.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* https://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file form_auto_newline.cpp
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* \author Andrey Semashev
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* \date 23.06.2019
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*
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* \brief This header contains tests for the auto_newline formatter.
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*/
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#define BOOST_TEST_MODULE form_auto_newline
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#include <string>
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#include <boost/test/unit_test.hpp>
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#include <boost/log/expressions.hpp>
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#include <boost/log/utility/formatting_ostream.hpp>
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#include "char_definitions.hpp"
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#include "make_record.hpp"
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namespace logging = boost::log;
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namespace expr = logging::expressions;
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// Test appending a newline to a non-empty string
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BOOST_AUTO_TEST_CASE_TEMPLATE(append_to_non_empty_string, CharT, char_types)
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{
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typedef CharT char_type;
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typedef std::basic_ostringstream< char_type > ostream_type;
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typedef logging::basic_formatting_ostream< char_type > formatting_ostream_type;
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typedef typename formatting_ostream_type::string_type string_type;
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typedef logging::record_view record_view;
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typedef logging::basic_formatter< char_type > formatter;
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record_view rec = make_record_view();
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string_type str_fmt;
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formatting_ostream_type strm_fmt(str_fmt);
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formatter f = expr::stream << "Hello" << expr::auto_newline;
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f(rec, strm_fmt);
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ostream_type strm_correct;
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strm_correct << "Hello\n";
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BOOST_CHECK(equal_strings(strm_fmt.str(), strm_correct.str()));
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}
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// Test appending a newline to an empty string
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BOOST_AUTO_TEST_CASE_TEMPLATE(append_to_empty_string, CharT, char_types)
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{
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typedef CharT char_type;
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typedef std::basic_ostringstream< char_type > ostream_type;
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typedef logging::basic_formatting_ostream< char_type > formatting_ostream_type;
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typedef typename formatting_ostream_type::string_type string_type;
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typedef logging::record_view record_view;
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typedef logging::basic_formatter< char_type > formatter;
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record_view rec = make_record_view();
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string_type str_fmt;
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formatting_ostream_type strm_fmt(str_fmt);
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formatter f = expr::stream << expr::auto_newline;
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f(rec, strm_fmt);
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ostream_type strm_correct;
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strm_correct << "\n";
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BOOST_CHECK(equal_strings(strm_fmt.str(), strm_correct.str()));
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}
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// Test not appending a newline to a non-empty string which already ends with a newline
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BOOST_AUTO_TEST_CASE_TEMPLATE(not_append_if_ends_with_a_newline, CharT, char_types)
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{
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typedef CharT char_type;
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typedef std::basic_ostringstream< char_type > ostream_type;
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typedef logging::basic_formatting_ostream< char_type > formatting_ostream_type;
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typedef typename formatting_ostream_type::string_type string_type;
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typedef logging::record_view record_view;
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typedef logging::basic_formatter< char_type > formatter;
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record_view rec = make_record_view();
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string_type str_fmt;
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formatting_ostream_type strm_fmt(str_fmt);
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formatter f = expr::stream << "Hello\n" << expr::auto_newline;
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f(rec, strm_fmt);
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ostream_type strm_correct;
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strm_correct << "Hello\n";
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BOOST_CHECK(equal_strings(strm_fmt.str(), strm_correct.str()));
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}
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