vectorwrapper/test/unit/test_c_array.cpp

130 lines
3.3 KiB
C++

/*
* Copyright 2015-2020 Michele "King_DuckZ" Santullo
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "vectorwrapper/vectorwrapper.hpp"
#include <gtest/gtest.h>
#include <cstddef>
namespace {
struct Point {
unsigned short int x, y, z;
};
} //unnamed namespace
namespace vwr {
template <> struct VectorWrapperInfo<unsigned short int[3]> {
enum { dimensions = 3 };
using scalar_type = unsigned short int;
using vector_type = unsigned short int[3];
using higer_vector_type = unsigned short int[4];
enum {
offset_x = sizeof(scalar_type) * 0,
offset_y = sizeof(scalar_type) * 1,
offset_z = sizeof(scalar_type) * 2
};
};
template <> struct VectorWrapperInfo<unsigned short int[4]> {
enum { dimensions = 4 };
using scalar_type = unsigned short int;
using vector_type = unsigned short int[4];
using lower_vector_type = unsigned short int[3];
enum {
offset_x = sizeof(scalar_type) * 0,
offset_y = sizeof(scalar_type) * 1,
offset_z = sizeof(scalar_type) * 2,
offset_w = sizeof(scalar_type) * 3
};
};
template <> struct VectorWrapperInfo<Point> {
enum { dimensions = 3 };
using scalar_type = unsigned short int;
using vector_type = Point;
enum {
offset_x = offsetof(Point, x),
offset_y = offsetof(Point, y),
offset_z = offsetof(Point, z)
};
};
} //namespace vwr
namespace {
typedef vwr::Vec<unsigned short int[3]> vec3;
typedef vwr::Vec<unsigned short int[4]> vec4;
typedef vwr::Vec<Point> struct_vec3;
} //unnamed namespace
TEST(vwr, c_array) {
constexpr const unsigned short int test_val = 0b1010101010101010;
vec4 myvec4(test_val);
vec3 myvec3(myvec4.xyz());
EXPECT_EQ(myvec3, myvec4.xyz());
EXPECT_EQ(test_val, myvec3.x());
EXPECT_EQ(test_val, myvec3.y());
EXPECT_EQ(test_val, myvec3.z());
for (int z = 0; z < 4; ++z) {
const auto val = myvec4.data()[z];
EXPECT_EQ(test_val, val);
}
myvec4.data()[1] = 5;
{
unsigned short int vals[4] { test_val, 5, test_val, test_val };
for (int z = 0; z < 4; ++z) {
const auto val = myvec4.data()[z];
EXPECT_EQ(vals[z], val);
}
}
myvec4.w() = 0xFFFFU;
{
unsigned short int vals[4] { test_val, 5, test_val, 0xFFFFU };
for (int z = 0; z < 4; ++z) {
const auto val = myvec4.data()[z];
EXPECT_EQ(vals[z], val);
}
}
myvec3.x() = 1001U;
myvec3.y() = 1503U;
myvec3.z() = 2007U;
EXPECT_EQ(4511U, myvec3.x() + myvec3.y() + myvec3.z());
EXPECT_NE(myvec3, myvec4.xyz());
myvec3 = vec3{800U, 900U, 1000U};
EXPECT_EQ(800U, myvec3.x());
EXPECT_EQ(900U, myvec3.y());
EXPECT_EQ(1000U, myvec3.z());
}
TEST(vwr, c_array_interactions) {
vec3 myvec3 {7, 11, 13};
struct_vec3 mystructvec3 { 17, 19, 23 };
EXPECT_NE(myvec3, mystructvec3);
myvec3 = mystructvec3;
EXPECT_EQ(myvec3, mystructvec3);
mystructvec3 = vec3{29, 31, 37};
EXPECT_NE(myvec3, mystructvec3);
EXPECT_EQ(29, mystructvec3.x());
EXPECT_EQ(31, mystructvec3.y());
EXPECT_EQ(37, mystructvec3.z());
}