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.
277 lines
8.4 KiB
C++
277 lines
8.4 KiB
C++
/*
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FormatHelper(Test) - validate formatting and diagnostics helpers
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Copyright (C)
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2009, 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 format-helper-test.cpp
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** unit test \ref FormatHelper_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/format-util.hpp"
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#include "lib/format-string.hpp"
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#include "lib/iter-adapter-stl.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/error.hpp"
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#include <vector>
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#include <string>
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using lib::transformIterator;
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using lib::iter_stl::snapshot;
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using lib::iter_stl::eachElm;
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using lib::eachNum;
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using util::_Fmt;
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using std::vector;
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using std::string;
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using std::to_string;
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namespace util {
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namespace test {
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namespace { // test fixture...
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class Reticent
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{ };
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class UnReticent
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: public Reticent
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{
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public:
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operator string() const { return "hey Joe!"; }
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};
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class AutoCounter
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{
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static uint cnt;
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uint id_;
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double d_;
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public:
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AutoCounter(double d)
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: id_(++cnt)
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, d_(d*2)
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{ }
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operator string() const
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{
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return _Fmt("Nr.%02d(%3.1f)") % id_ % d_;
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}
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};
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uint AutoCounter::cnt = 0;
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}
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/***************************************************************************//**
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* @test verifies the proper working of some string-formatting helper functions.
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* - util::toString() provides a failsafe to-String conversion, preferring
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* an built-in conversion, falling back to just a type string.
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* - util::join() combines elements from arbitrary containers or iterators
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* into a string, relying on aforementioned generic string conversion
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* @see format-util.hpp
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*/
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class FormatHelper_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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check2String();
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checkStringify();
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checkStringJoin();
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checkPrefixSuffix();
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}
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/** @test verify a failsafe to-string conversion. */
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void
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check2String ()
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{
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Reticent closeLipped;
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UnReticent chatterer;
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CHECK (toString (closeLipped) == "«Reticent»"_expect);
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CHECK (toString (chatterer) == "hey Joe!"_expect);
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CHECK (toString (&chatterer) == "↗hey Joe!"_expect); // pointer indicated
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CHECK (toString (nullptr) == "↯"_expect); // runtime exception, caught
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CHECK (toString (true) == "true"_expect); // special handling for bool
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CHECK (toString (2+2 == 5) == "false"_expect);
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CHECK (toString (12.34e55) == "1.234e+56"_expect);
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CHECK (toString (short(12))
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+toString (345L)
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+toString ("67")
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+toString ('8') == "12345678"_expect); // these go through lexical_cast<string>
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}
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/** @test inline to-string converter function
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* - can be used as transforming iterator
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* - alternatively accept arbitrary arguments
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*/
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void
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checkStringify()
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{
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// use as transformer within an (iterator) pipeline
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auto ss = stringify (eachNum (1.11, 10.2));
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CHECK (ss);
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CHECK ("1.11" == *ss);
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++ss;
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CHECK ("2.11" == *ss);
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string res{".."};
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for (auto s : ss)
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res += s;
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CHECK (res == "..2.113.114.115.116.117.118.119.1110.11"_expect);
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using VecS = vector<string>;
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// another variant: collect arbitrary heterogeneous arguments
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VecS vals = stringify (short(12), 345L, "67", '8');
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CHECK (vals == VecS({"12", "345", "67", "8"}));
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// stringify can both consume (RValue-Ref) or take a copy from its source
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auto nn = snapshot (eachNum (5, 10));
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CHECK (5 == *nn);
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++nn;
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CHECK (6 == *nn);
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auto sn = stringify (nn);
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CHECK ("6" == *sn);
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++sn;
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CHECK ("7" == *sn);
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CHECK (6 == *nn);
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++++nn;
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CHECK (8 == *nn);
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CHECK ("7" == *sn);
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sn = stringify (std::move(nn));
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CHECK ("8" == *sn);
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CHECK (isnil (nn)); // was consumed by moving it into sn
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++sn;
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CHECK ("9" == *sn);
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++sn;
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CHECK (isnil (sn));
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}
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/** @test verify delimiter separated joining of arbitrary collections.
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* - the first test uses a STL container, which means we need to wrap
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* into a lib::RangeIter. Moreover, lexical_cast is used to convert
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* the double numbers into strings.
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* - the second test uses an inline transforming iterator to build a
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* series of AutoCounter objects, which provide a custom string
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* conversion function. Moreover, since the transforming iterator
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* conforms to the Lumiera Forward Iterator concept, we can just
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* move the rvalue into the formatting function without much ado
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*/
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void
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checkStringJoin()
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{
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vector<double> dubious;
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for (uint i=0; i<10; ++i)
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dubious.push_back(1.1*i);
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std::function<AutoCounter(double)> justCount = [](double d){ return AutoCounter(d); };
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CHECK (join (dubious, "--+--")
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== "0--+--"
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"1.1--+--"
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"2.2--+--"
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"3.3--+--"
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"4.4--+--"
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"5.5--+--"
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"6.6--+--"
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"7.7--+--"
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"8.8--+--"
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"9.9"_expect);
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CHECK (join (transformIterator(eachElm(dubious), justCount))
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== "Nr.01(0.0), "
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"Nr.02(2.2), "
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"Nr.03(4.4), "
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"Nr.04(6.6), "
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"Nr.05(8.8), "
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"Nr.06(11.0), "
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"Nr.07(13.2), "
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"Nr.08(15.4), "
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"Nr.09(17.6), "
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"Nr.10(19.8)"_expect);
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}
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/** @test convenience helpers to deal with prefixes and suffixes */
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void
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checkPrefixSuffix()
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{
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string abcdef{"abcdef"};
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CHECK (startsWith (abcdef, "abcdef"));
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CHECK (startsWith (abcdef, "abcde"));
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CHECK (startsWith (abcdef, "abcd"));
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CHECK (startsWith (abcdef, "abc"));
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CHECK (startsWith (abcdef, "ab"));
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CHECK (startsWith (abcdef, "a"));
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CHECK (startsWith (abcdef, ""));
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CHECK (endsWith (abcdef, "abcdef"));
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CHECK (endsWith (abcdef, "bcdef"));
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CHECK (endsWith (abcdef, "cdef"));
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CHECK (endsWith (abcdef, "def"));
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CHECK (endsWith (abcdef, "ef"));
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CHECK (endsWith (abcdef, "f"));
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CHECK (endsWith (abcdef, ""));
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CHECK (startsWith (string{}, ""));
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CHECK (endsWith (string{}, ""));
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CHECK (not startsWith (string{"abc"}, "abcd"));
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CHECK (not startsWith (string{"a"}, "ä"));
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CHECK (not startsWith (string{"ä"}, "a"));
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CHECK (not endsWith (string{"abc"}, " abc"));
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CHECK (not endsWith (string{"a"}, "ä"));
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CHECK (not endsWith (string{"ä"}, "a"));
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string abc{"abcdef"};
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removePrefix(abc, "ab");
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CHECK ("cdef" == abc);
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removeSuffix(abc, "ef");
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CHECK ("cd" == abc);
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abc = "bcdef";
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removePrefix(abc, "ab");
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CHECK ("bcdef" == abc);
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removeSuffix(abc, "abcdef");
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CHECK ("bcdef" == abc);
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removeSuffix(abc, "bcdef");
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CHECK (isnil (abc));
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}
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};
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LAUNCHER (FormatHelper_test, "unit common");
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}} // namespace util::test
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