Ichthyostega
806db414dd
* Lumiera source code always was copyrighted by individual contributors * there is no entity "Lumiera.org" which holds any copyrights * Lumiera source code is provided under the GPL Version 2+ == Explanations == Lumiera as a whole is distributed under Copyleft, GNU General Public License Version 2 or above. For this to become legally effective, the ''File COPYING in the root directory is sufficient.'' The licensing header in each file is not strictly necessary, yet considered good practice; attaching a licence notice increases the likeliness that this information is retained in case someone extracts individual code files. However, it is not by the presence of some text, that legally binding licensing terms become effective; rather the fact matters that a given piece of code was provably copyrighted and published under a license. Even reformatting the code, renaming some variables or deleting parts of the code will not alter this legal situation, but rather creates a derivative work, which is likewise covered by the GPL! The most relevant information in the file header is the notice regarding the time of the first individual copyright claim. By virtue of this initial copyright, the first author is entitled to choose the terms of licensing. All further modifications are permitted and covered by the License. The specific wording or format of the copyright header is not legally relevant, as long as the intention to publish under the GPL remains clear. The extended wording was based on a recommendation by the FSF. It can be shortened, because the full terms of the license are provided alongside the distribution, in the file COPYING.
128 lines
2.8 KiB
C++
128 lines
2.8 KiB
C++
/*
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IosSavepoint(Test) - manipulate and restore output stream formatting
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Copyright (C)
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2022, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file ios-savepoint-test.cpp
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** unit test \ref IosSavepoint_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/format-cout.hpp"
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#include "lib/ios-savepoint.hpp"
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#include <iomanip>
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#include <string>
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using std::string;
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namespace util {
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namespace test {
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/***************************************************************************//**
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* @test verifies capturing and restoring of std::ostream formatting state.
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* @see ios-savepoint.hpp
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*/
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class IosSavepoint_test
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: public Test
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{
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void
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run (Arg)
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{
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switchToHex();
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__verifySane();
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setFill();
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__verifySane();
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nested();
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__verifySane();
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try {
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restoreAfterException();
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} catch(...){
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cout << "Tilt" <<endl;
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}
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__verifySane();
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}
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/** verify that original state is restored */
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void
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__verifySane()
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{
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cout << std::setw(10) << 42 <<endl;
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}
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/** @test verify that hexadecimal output is cleared */
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void
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switchToHex()
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{
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IosSavepoint save{cout};
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cout << std::hex
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<< std::showbase
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<< 42 <<endl;
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}
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/** @test verify that a custom fill character is cleared */
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void
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setFill()
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{
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IosSavepoint save{cout};
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cout << std::setfill('*')
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<< std::setw(20)
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<< 42 <<endl;
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}
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/** @test verify usage in nested scopes */
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void
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nested()
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{
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IosSavepoint save{cout};
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cout << std::hex << 42 <<endl;
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{
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IosSavepoint inner(cout);
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cout << std::oct << std::showbase << 42 <<endl;
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}
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cout << 42 <<endl;
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}
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/** @test verify clean-up happens even in case of an exception */
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void
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restoreAfterException()
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{
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auto boom = []() -> float
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{ throw 42; };
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IosSavepoint save{cout};
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cout << std::hexfloat
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<< 1234
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<< endl
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<< boom()
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<< endl;
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}
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};
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LAUNCHER (IosSavepoint_test, "unit common");
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}} // namespace util::test
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