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LUMIERA.clone/tests/library/format-string-test.cpp
Ichthyostega 806db414dd Copyright: clarify and simplify the file headers 
* 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.
2024-11-17 23:42:55 +01:00

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/*
FormatString(Test) - validate string template formatting (printf style)
Copyright (C)
2011, Hermann Vosseler <Ichthyostega@web.de>
  **Lumiera** is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version. See the file COPYING for further details.
* *****************************************************************/
/** @file format-string-test.cpp
** unit test \ref FormatString_test
*/
#include "lib/test/run.hpp"
#include "lib/test/test-helper.hpp"
#include "lib/format-string.hpp"
#include "lib/symbol.hpp"
#include "lib/error.hpp"
#include "lib/util.hpp"
#include <boost/lexical_cast.hpp>
#include <iostream>
using boost::lexical_cast;
using std::cout;
using std::endl;
namespace util {
namespace test {
namespace error = lumiera::error;
/***************************************************************************//**
* @test verifies our front-end for printf-style format string based formatting.
* - the implementation is based on boost::format
* - we create a wrapper-object on-the fly, which is able to hold
* the result of a partial invocation, until all parameters are given.
* - explicit specialisations feed all primitive types directly down
* into the implementation level. If possible, a custom operator string()
* will be used for formatting.
* - exceptions will be logged, but handled gracefully
*
* @see format-string.hpp
* @see boost::format
*/
class FormatString_test : public Test
{
void
run (Arg)
{
check_simpleInvocation();
check_delayedInvocation();
verify_typeHandling();
verify_customType();
verify_errorHandling();
verify_pointerHandling();
}
void
check_simpleInvocation ()
{
string formatted = _Fmt("--format-template--int=%04d--double=%+5.2f--string=%-9s--")
% 12
% 1.228
% "Lumiera";
cout << formatted << endl;
CHECK (formatted == "--format-template--int=0012--double=+1.23--string=Lumiera --");
}
void
check_delayedInvocation ()
{
string formatString = "%p %|20T_| %u";
_Fmt formatter (formatString);
uint val = rani (100);
void *pt = &val;
formatter % pt;
formatter % val;
cout << formatter << endl;
}
void
verify_typeHandling ()
{
int i(-12);
CHECK (_Fmt("%d") % i == "-12" );
CHECK (_Fmt("%6d") % i == " -12" );
CHECK (_Fmt("%-6d") % i == "-12 " );
CHECK (_Fmt("%+-6d") % -i == "+12 " );
CHECK (_Fmt("%+06d") % -i == "+00012" );
CHECK (_Fmt("%06X") % -i == "00000C" );
CHECK (_Fmt("%#x") % -i == "0xc" );
uint u(12);
CHECK (_Fmt("%d") % u == "12" );
CHECK (_Fmt("%6d") % u == " 12" );
CHECK (_Fmt("%-6d") % u == "12 " );
CHECK (_Fmt("%-+6d") % u == "12 " );
CHECK (_Fmt("%+06d") % u == "000012" );
short sh(-123);
CHECK (_Fmt("%6d") % sh == " -123" );
ushort ush(123);
CHECK (_Fmt("%6d") % ush == " 123" );
long l(-123);
CHECK (_Fmt("%6d") % l == " -123" );
ulong ul(123);
CHECK (_Fmt("%6d") % ul == " 123" );
int64_t ll(5e+9);
CHECK (_Fmt("%d") % ll == "5000000000" );
CHECK (_Fmt("%5.3d") %ll == "5000000000" );
CHECK (_Fmt("%10.3e") %ll == "5000000000" );
uint64_t ull(ll);
CHECK (_Fmt("%d") % ull == "5000000000" );
float f(12.34);
CHECK (_Fmt("%g") % f == "12.34" );
CHECK (_Fmt("%d") % f == "12.34" );
CHECK (_Fmt("%.3f") % f == "12.340" );
CHECK (_Fmt("%.1e") % f == "1.2e+01");
CHECK (_Fmt("%.0f") % f == "12" );
double d(-12.34);
CHECK (_Fmt("%g") % d == "-12.34" );
char c(0x40);
CHECK (_Fmt("%d") % c == "@" );
CHECK (_Fmt("%x") % c == "@" );
CHECK (_Fmt("%o") % c == "@" );
CHECK (_Fmt("%c") % c == "@" );
CHECK (_Fmt("%s") % c == "@" );
CHECK (_Fmt("%d") % short(c) == "64" );
CHECK (_Fmt("%x") % short(c) == "40" );
CHECK (_Fmt("%o") % short(c) == "100" );
CHECK (_Fmt("%c") % short(c) == "6" );
CHECK (_Fmt("%s") % short(c) == "64" );
uchar uc(0xff);
CHECK (_Fmt("%d") % uint(uc) == "255" );
CHECK (_Fmt("%x") % uint(uc) == "ff" );
CHECK (_Fmt("%X") % uint(uc) == "FF" );
CHECK (_Fmt("%c") % uint(uc) == "2" );
CHECK (_Fmt("%s") % uint(uc) == "255" );
CHECK (_Fmt("%d") % uc == "\xFF");
CHECK (_Fmt("%x") % uc == "\xFF");
CHECK (_Fmt("%X") % uc == "\xFF");
CHECK (_Fmt("%c") % uc == "\xFF");
CHECK (_Fmt("%s") % uc == "\xFF");
c = char(uc);
CHECK (_Fmt("%c") % c == "\xFF");
string str("Lumiera");
CHECK (_Fmt("%s") % str == "Lumiera" );
CHECK (_Fmt("%10s") % str == " Lumiera" );
CHECK (_Fmt("%7.4s") %str == " Lumi" );
CHECK (_Fmt("%10c") % str == " L" );
const char* pch("edit");
CHECK (_Fmt("%s") % pch == "edit" );
CHECK (_Fmt("%10s") % pch == " edit" );
CHECK (_Fmt("%7.3s") %pch == " edi" );
CHECK (_Fmt("%10c") % pch == " e" );
lib::Literal lit("your");
CHECK (_Fmt("%s") % lit == "your" );
CHECK (_Fmt("%10s") % lit == " your" );
CHECK (_Fmt("%7.2s") %lit == " yo" );
CHECK (_Fmt("%10c") % lit == " y" );
lib::Symbol sym("freedom");
CHECK (_Fmt("%s") % sym == "freedom" );
CHECK (_Fmt("%10s") % sym == " freedom" );
CHECK (_Fmt("%7.5s") %sym == " freed" );
CHECK (_Fmt("%10c") % sym == " f" );
}
/* == some custom types to test with == */
struct Silent
{
int i_;
Silent(int i) : i_(i) { }
};
struct Verbose
: Silent
{
using Silent::Silent;
virtual ~Verbose() { }
virtual
operator string() const
{
return _Fmt("Number-%03d") % i_;
}
};
struct Explosive
: Verbose
{
using Verbose::Verbose;
operator string() const
{
if (23 == i_)
throw error::State("encountered Fantomas");
else
return Verbose::operator string();
}
};
void
verify_customType ()
{
Silent s(12);
Verbose v(13);
Explosive x(23);
Silent& rs1 = v;
Silent& rs2 = x;
Verbose& rv = x;
string typeDisplay = _Fmt("%s") % s;
cout << typeDisplay << endl;
CHECK (contains (typeDisplay, "test"));
CHECK (contains (typeDisplay, "FormatString_test"));
CHECK (contains (typeDisplay, "Silent"));
CHECK (_Fmt("!!%s!!") % v == "!!Number-013!!");
CHECK (_Fmt("!!%s!!") % x == "!!<string conversion failed: LUMIERA_ERROR_STATE:unforeseen state (encountered Fantomas).>!!");
CHECK (contains (_Fmt("%s") % rs1, "Silent"));
CHECK (contains (_Fmt("%s") % rs2, "Silent"));
CHECK (_Fmt("!!%s!!") % rv == "!!<string conversion failed: LUMIERA_ERROR_STATE:unforeseen state (encountered Fantomas).>!!");
x.i_ = 42;
CHECK (_Fmt("!!%s!!") % rv == "!!Number-042!!");
CHECK (_Fmt("!!%s!!") % x == "!!Number-042!!");
lib::Symbol sym("42");
CHECK (_Fmt("!!%s!!") % sym == "!!42!!"); // but especially Symbol datatype is explicitly treated like a string
}
void
verify_errorHandling ()
{
cout << _Fmt("__nix_") % 1 % 2 << endl;
cout << _Fmt("__%d__") << endl;
cout << _Fmt("__%d__") % 1 << endl;
cout << _Fmt("__%d__") % 1 % 2 << endl;
const char* evil = NULL;
cout << _Fmt("__%d__") % evil << endl;
cout << _Fmt("__%d__") % "dirt" << endl;
cout << _Fmt("__%d__") % "1234" << endl;
cout << _Fmt("__%d__") % "0xff" << endl;
VERIFY_ERROR(FORMAT_SYNTAX, _Fmt("%madness"));
}
void
verify_pointerHandling ()
{
int i(-12); int * pi = & i;
uint u(12); uint * pu = & u;
short sh(-123); short * psh = & sh;
ushort ush(123); ushort * push = &ush;
long l(-123); long * pl = & l;
ulong ul(123); ulong * pul = & ul;
int64_t ll(5e+9); int64_t * pll = & ll;
uint64_t ull(ll); uint64_t * pull = &ull;
float f(12.34); float * pf = & f;
double d(-12.34); double * pd = & d;
uchar uc(0xff); uchar * puc = & uc;
string str("Lumiera"); string * pstr = &str;
CHECK (_Fmt("%d") % i == _Fmt("%d") % pi);
CHECK (_Fmt("%d") % u == _Fmt("%d") % pu);
CHECK (_Fmt("%d") % sh == _Fmt("%d") % psh);
CHECK (_Fmt("%d") % ush == _Fmt("%d") % push);
CHECK (_Fmt("%d") % l == _Fmt("%d") % pl);
CHECK (_Fmt("%d") % ul == _Fmt("%d") % pul);
CHECK (_Fmt("%d") % ll == _Fmt("%d") % pll);
CHECK (_Fmt("%d") % ull == _Fmt("%d") % pull);
CHECK (_Fmt("%e") % f == _Fmt("%e") % pf);
CHECK (_Fmt("%e") % d == _Fmt("%e") % pd);
CHECK (_Fmt("%g") % uc == _Fmt("%g") % puc);
CHECK (_Fmt("%s") % str == _Fmt("%s") % pstr);
char c('a');
char pc[2] = {'a', '\0'};
CHECK (_Fmt("%g") % c == _Fmt("%g") % pc);
Verbose v(42);
Verbose *pv = &v;
void *vv = pv;
CHECK (_Fmt("__%s__") % v == "__Number-042__");
CHECK (_Fmt("__%s__") % pv == "__Number-042__");
CHECK (_Fmt("__%s__") % vv != "__Number-042__");
string address = lexical_cast<string>(pv);
CHECK (_Fmt("__%s__") % vv == "__"+address+"__");
pv = NULL;
vv = NULL;
CHECK (_Fmt("__%s__") % pv == "__"+BOTTOM_INDICATOR+"__");
CHECK (_Fmt("__%s__") % vv == "__0__");
}
};
LAUNCHER (FormatString_test, "unit meta");
}} // namespace util::test
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