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/**
* @file llsingleton_test.cpp
* @date 2011-08-11
* @brief Unit test for the LLSingleton class
*
* $LicenseInfo:firstyear=2011&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2011, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llunit.h"
#include "../test/lltut.h"
namespace LLUnits
{
// using powers of 2 to allow strict floating point equality
LL_DECLARE_BASE_UNIT(Quatloos, "Quat");
LL_DECLARE_DERIVED_UNIT(Quatloos, * 4, Latinum, "Lat");
LL_DECLARE_DERIVED_UNIT(Latinum, / 16, Solari, "Sol");
}
LL_DECLARE_UNIT_TYPEDEFS(LLUnits, Quatloos);
LL_DECLARE_UNIT_TYPEDEFS(LLUnits, Latinum);
LL_DECLARE_UNIT_TYPEDEFS(LLUnits, Solari);
namespace tut
{
using namespace LLUnits;
struct units
{
};
typedef test_group<units> units_t;
typedef units_t::object units_object_t;
tut::units_t tut_singleton("LLUnit");
// storage type conversions
template<> template<>
void units_object_t::test<1>()
{
LLUnit<F32, Quatloos> float_quatloos;
ensure("default float unit is zero", float_quatloos == F32Quatloos(0.f));
LLUnit<F32, Quatloos> float_initialize_quatloos(1);
ensure("non-zero initialized unit", float_initialize_quatloos == F32Quatloos(1.f));
LLUnit<S32, Quatloos> int_quatloos;
ensure("default int unit is zero", int_quatloos == S32Quatloos(0));
int_quatloos = S32Quatloos(42);
ensure("int assignment is preserved", int_quatloos == S32Quatloos(42));
float_quatloos = int_quatloos;
ensure("float assignment from int preserves value", float_quatloos == F32Quatloos(42.f));
int_quatloos = float_quatloos;
ensure("int assignment from float preserves value", int_quatloos == S32Quatloos(42));
float_quatloos = F32Quatloos(42.1f);
int_quatloos = float_quatloos;
ensure("int units truncate float units on assignment", int_quatloos == S32Quatloos(42));
LLUnit<U32, Quatloos> unsigned_int_quatloos(float_quatloos);
ensure("unsigned int can be initialized from signed int", unsigned_int_quatloos == S32Quatloos(42));
S32Solari int_solari(1);
float_quatloos = int_solari;
ensure("fractional units are preserved in conversion from integer to float type", float_quatloos == F32Quatloos(0.25f));
int_quatloos = S32Quatloos(1);
F32Solari float_solari = int_quatloos;
ensure("can convert with fractional intermediates from integer to float type", float_solari == F32Solari(4.f));
}
// conversions to/from base unit
template<> template<>
void units_object_t::test<2>()
{
LLUnit<F32, Quatloos> quatloos(1.f);
LLUnit<F32, Latinum> latinum_bars(quatloos);
ensure("conversion between units is automatic via initialization", latinum_bars == F32Latinum(1.f / 4.f));
latinum_bars = S32Latinum(256);
quatloos = latinum_bars;
ensure("conversion between units is automatic via assignment, and bidirectional", quatloos == S32Quatloos(1024));
LLUnit<S32, Quatloos> single_quatloo(1);
LLUnit<F32, Latinum> quarter_latinum = single_quatloo;
ensure("division of integer unit preserves fractional values when converted to float unit", quarter_latinum == F32Latinum(0.25f));
}
// conversions across non-base units
template<> template<>
void units_object_t::test<3>()
{
LLUnit<F32, Quatloos> quatloos(1024);
LLUnit<F32, Solari> solari(quatloos);
ensure("conversions can work between indirectly related units: Quatloos -> Latinum -> Solari", solari == S32Solari(4096));
LLUnit<F32, Latinum> latinum_bars = solari;
ensure("Non base units can be converted between each other", latinum_bars == S32Latinum(256));
}
// math operations
template<> template<>
void units_object_t::test<4>()
{
// exercise math operations
LLUnit<F32, Quatloos> quatloos(1.f);
quatloos *= 4.f;
ensure(quatloos == S32Quatloos(4));
quatloos = quatloos * 2;
ensure(quatloos == S32Quatloos(8));
quatloos = 2.f * quatloos;
ensure(quatloos == S32Quatloos(16));
quatloos += F32Quatloos(4.f);
ensure(quatloos == S32Quatloos(20));
quatloos += S32Quatloos(4);
ensure(quatloos == S32Quatloos(24));
quatloos = quatloos + S32Quatloos(4);
ensure(quatloos == S32Quatloos(28));
quatloos = S32Quatloos(4) + quatloos;
ensure(quatloos == S32Quatloos(32));
quatloos += quatloos * 3;
ensure(quatloos == S32Quatloos(128));
quatloos -= quatloos / 4 * 3;
ensure(quatloos == S32Quatloos(32));
quatloos = quatloos - S32Quatloos(8);
ensure(quatloos == S32Quatloos(24));
quatloos -= S32Quatloos(4);
ensure(quatloos == S32Quatloos(20));
quatloos -= F32Quatloos(4.f);
ensure(quatloos == S32Quatloos(16));
quatloos /= 2.f;
ensure(quatloos == S32Quatloos(8));
quatloos = quatloos / 4;
ensure(quatloos == S32Quatloos(2));
F32 ratio = quatloos / LLUnit<F32, Quatloos>(2.f);
ensure(ratio == 1);
ratio = quatloos / LLUnit<F32, Solari>(8.f);
ensure(ratio == 1);
quatloos += LLUnit<F32, Solari>(8.f);
ensure(quatloos == S32Quatloos(4));
quatloos -= LLUnit<F32, Latinum>(1.f);
ensure(quatloos == S32Quatloos(0));
}
// comparison operators
template<> template<>
void units_object_t::test<5>()
{
LLUnit<S32, Quatloos> quatloos(1);
ensure("can perform less than comparison against same type", quatloos < S32Quatloos(2));
ensure("can perform less than comparison against different storage type", quatloos < F32Quatloos(2.f));
ensure("can perform less than comparison against different units", quatloos < S32Latinum(5));
ensure("can perform less than comparison against different storage type and units", quatloos < F32Latinum(5.f));
ensure("can perform greater than comparison against same type", quatloos > S32Quatloos(0));
ensure("can perform greater than comparison against different storage type", quatloos > F32Quatloos(0.f));
ensure("can perform greater than comparison against different units", quatloos > S32Latinum(0));
ensure("can perform greater than comparison against different storage type and units", quatloos > F32Latinum(0.f));
}
bool accept_explicit_quatloos(S32Quatloos q)
{
return true;
}
bool accept_implicit_quatloos(S32Quatloos q)
{
return true;
}
// signature compatibility
template<> template<>
void units_object_t::test<6>()
{
S32Quatloos quatloos(1);
ensure("can pass unit values as argument", accept_explicit_quatloos(S32Quatloos(1)));
ensure("can pass unit values as argument", accept_explicit_quatloos(quatloos));
}
// implicit units
template<> template<>
void units_object_t::test<7>()
{
LLUnit<F32, Quatloos> quatloos;
LLUnitImplicit<F32, Quatloos> quatloos_implicit = quatloos + S32Quatloos(1);
ensure("can initialize implicit unit from explicit", quatloos_implicit == 1);
quatloos = quatloos_implicit;
ensure("can assign implicit unit to explicit unit", quatloos == S32Quatloos(1));
quatloos += quatloos_implicit;
ensure("can perform math operation using mixture of implicit and explicit units", quatloos == S32Quatloos(2));
// math operations on implicits
quatloos_implicit = 1;
ensure(quatloos_implicit == 1);
quatloos_implicit += 2;
ensure(quatloos_implicit == 3);
quatloos_implicit *= 2;
ensure(quatloos_implicit == 6);
quatloos_implicit -= 1;
ensure(quatloos_implicit == 5);
quatloos_implicit /= 5;
ensure(quatloos_implicit == 1);
quatloos_implicit = quatloos_implicit + 3 + quatloos_implicit;
ensure(quatloos_implicit == 5);
quatloos_implicit = 10 - quatloos_implicit - 1;
ensure(quatloos_implicit == 4);
quatloos_implicit = 2 * quatloos_implicit * 2;
ensure(quatloos_implicit == 16);
F32 one_half = quatloos_implicit / (quatloos_implicit * 2);
ensure(one_half == 0.5f);
// implicit conversion to POD
F32 float_val = quatloos_implicit;
ensure("implicit units convert implicitly to regular values", float_val == 16);
S32 int_val = quatloos_implicit;
ensure("implicit units convert implicitly to regular values", int_val == 16);
// conversion of implicits
LLUnitImplicit<F32, Latinum> latinum_implicit(2);
ensure("implicit units of different types are comparable", latinum_implicit * 2 == quatloos_implicit);
}
// precision tests
template<> template<>
void units_object_t::test<8>()
{
U32Bytes max_bytes(U32_MAX);
S32Megabytes mega_bytes = max_bytes;
ensure("max available precision is used when converting units", mega_bytes == (S32Megabytes)4095);
mega_bytes = (S32Megabytes)-5 + (U32Megabytes)1;
ensure("can mix signed and unsigned in units addition", mega_bytes == (S32Megabytes)-4);
mega_bytes = (U32Megabytes)5 + (S32Megabytes)-1;
ensure("can mix unsigned and signed in units addition", mega_bytes == (S32Megabytes)4);
}
}
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