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VMDTest.h
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VMDTest.h
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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
// NScD Oak Ridge National Laboratory, European Spallation Source,
// Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
#include "MantidKernel/System.h"
#include "MantidKernel/Timer.h"
#include <cmath>
#include <cxxtest/TestSuite.h>
#include "MantidKernel/V3D.h"
#include "MantidKernel/VMD.h"
using namespace Mantid;
using namespace Mantid::Kernel;
class VMDTest : public CxxTest::TestSuite {
public:
void test_constructors() {
TS_ASSERT_EQUALS(VMD().getNumDims(), 1);
TS_ASSERT_EQUALS(VMD(27).getNumDims(), 27);
TS_ASSERT_EQUALS(VMD(2), VMD(0.0, 0.0));
TS_ASSERT_EQUALS(VMD(3), VMD(0.0, 0.0, 0.0));
TS_ASSERT_EQUALS(VMD(4), VMD(0.0, 0.0, 0.0, 0.0));
TS_ASSERT_EQUALS(VMD(V3D(1, 2, 3)), VMD(1, 2, 3));
double v1[4] = {1, 2, 3, 4};
TS_ASSERT_EQUALS(VMD(4, v1), VMD(1, 2, 3, 4));
std::vector<double> v2;
v2.emplace_back(1.f);
v2.emplace_back(2.f);
TS_ASSERT_EQUALS(VMD(v2), VMD(1, 2));
std::vector<float> v3;
v3.emplace_back(1.f);
v3.emplace_back(2.f);
TS_ASSERT_EQUALS(VMD(v3), VMD(1, 2));
// Copy constructor
VMD a(1, 2, 3, 4);
TS_ASSERT_EQUALS(VMD(a), VMD(1, 2, 3, 4));
}
/// Constructors that should throw
void test_constructors_throw() {
double v1[4] = {1, 2, 3, 4};
TS_ASSERT_THROWS_ANYTHING(VMD(0));
TS_ASSERT_THROWS_ANYTHING(VMD(0, v1));
}
void test_notEquals() { TS_ASSERT(VMD(1, 2, 3) != VMD(1, 2, 3.0001)); }
void test_assign() {
VMD a(1, 2, 3);
VMD b(1, 2);
b = a;
TS_ASSERT(a == b);
}
void test_brackets() {
VMD a(1, 2, 3, 4);
TS_ASSERT_DELTA(a[0], 1.0, 1e-5);
TS_ASSERT_DELTA(a[1], 2.0, 1e-5);
TS_ASSERT_DELTA(a[2], 3.0, 1e-5);
TS_ASSERT_DELTA(a[3], 4.0, 1e-5);
}
void test_getBareArray() {
VMD b(1, 2, 3, 4);
const VMD_t *a = b.getBareArray();
TS_ASSERT_DELTA(a[0], 1.0, 1e-5);
TS_ASSERT_DELTA(a[1], 2.0, 1e-5);
TS_ASSERT_DELTA(a[2], 3.0, 1e-5);
TS_ASSERT_DELTA(a[3], 4.0, 1e-5);
}
void test_operators_throw_ifNonMatchingDimensions() {
VMD a(1, 2, 3);
VMD b(1, 2);
TS_ASSERT_THROWS_ANYTHING(a + b);
TS_ASSERT_THROWS_ANYTHING(a - b);
TS_ASSERT_THROWS_ANYTHING(a * b);
TS_ASSERT_THROWS_ANYTHING(a / b);
TS_ASSERT_THROWS_ANYTHING(a += b);
TS_ASSERT_THROWS_ANYTHING(a -= b);
TS_ASSERT_THROWS_ANYTHING(a *= b);
TS_ASSERT_THROWS_ANYTHING(a /= b);
}
void test_plus() {
VMD a(1, 2, 3);
VMD b(2, 3, 4);
VMD c(3, 5, 7);
TS_ASSERT_EQUALS((a + b), c);
b += a;
TS_ASSERT_EQUALS(b, c);
}
void test_minus() {
VMD a(1, 2, 3);
VMD b(2, 3, 4);
VMD c(-1, -1, -1);
TS_ASSERT_EQUALS((a - b), c);
a -= b;
TS_ASSERT_EQUALS(a, c);
}
void test_mult() {
VMD a(1, 2, 3);
VMD b(2, 3, 4);
VMD c(2, 6, 12);
TS_ASSERT_EQUALS((a * b), c);
b *= a;
TS_ASSERT_EQUALS(b, c);
}
void test_div() {
VMD a(1, 2, 3);
VMD b(2, 3, 4);
VMD c(0.5, 2.0 / 3.0, 0.75);
TS_ASSERT_EQUALS((a / b), c);
a /= b;
TS_ASSERT_EQUALS(a, c);
}
void test_mult_scalar() {
VMD a(1, 2, 3);
VMD b(2, 4, 6);
TS_ASSERT_EQUALS((a * 2.0), b);
a *= 2.0;
TS_ASSERT_EQUALS(a, b);
}
void test_div_scalar() {
VMD a(1, 2, 3);
VMD b(0.5, 1, 1.5);
TS_ASSERT_EQUALS((a / 2.0), b);
a /= 2.0;
TS_ASSERT_EQUALS(a, b);
}
void test_scalar_prod() {
VMD a(1, 2, 3);
VMD b(2, 3, 4);
TS_ASSERT_EQUALS(a.scalar_prod(b), 2 + 6 + 12);
}
void test_length() {
VMD a(3, 4, sqrt(39.0));
TS_ASSERT_EQUALS(a.length(), 8.0);
TS_ASSERT_EQUALS(a.norm(), 8.0);
TS_ASSERT_EQUALS(a.norm2(), 64.0);
}
void test_normalize() {
VMD a(3, 4, sqrt(39.0));
VMD b(3. / 8, 4. / 8, sqrt(39.0) / 8.);
TS_ASSERT_EQUALS(a.normalize(), 8.0);
TS_ASSERT_EQUALS(a, b);
}
void test_angle() {
VMD a(1, 0, 0);
VMD b(0, 1, 0);
TS_ASSERT_DELTA(a.angle(b), M_PI_2, 1e-4);
}
void test_toString() {
VMD a(1, 2, 3);
TS_ASSERT_EQUALS(a.toString(), "1 2 3");
TS_ASSERT_EQUALS(a.toString(","), "1,2,3");
TS_ASSERT_EQUALS(a.toString(""), "123");
}
void test_fromString() {
TS_ASSERT_EQUALS(VMD("1,2,3"), VMD(1, 2, 3));
TS_ASSERT_EQUALS(VMD("1, 2, 3"), VMD(1, 2, 3));
TS_ASSERT_EQUALS(VMD("1.234, 2"), VMD(1.234, 2));
TS_ASSERT_EQUALS(VMD("4 5 6 7"), VMD(4, 5, 6, 7));
TS_ASSERT_THROWS_ANYTHING(VMD("monkey"));
TS_ASSERT_THROWS_ANYTHING(VMD(""));
TS_ASSERT_THROWS_ANYTHING(VMD(" , , "));
}
void test_getNormalVector() {}
void test_getNormalVector_2D() {
std::vector<VMD> vectors;
vectors.emplace_back(VMD(1.0, 1.0));
VMD normal = VMD::getNormalVector(vectors);
TS_ASSERT_EQUALS(normal, VMD(1., -1.) * sqrt(0.5));
}
/// Define a plane along x=y axis vertical in Z
void test_getNormalVector_3D() {
std::vector<VMD> vectors;
vectors.emplace_back(VMD(1., 1., 0.));
vectors.emplace_back(VMD(0., 0., 1.));
VMD normal = VMD::getNormalVector(vectors);
TS_ASSERT_EQUALS(normal, VMD(1., -1., 0.) * sqrt(0.5));
}
/// Bad vectors = they are collinear
void test_getNormalVector_3D_collinear() {
std::vector<VMD> vectors;
vectors.emplace_back(VMD(1., 1., 0.));
vectors.emplace_back(VMD(2., 2., 0.));
TS_ASSERT_THROWS_ANYTHING(VMD normal = VMD::getNormalVector(vectors));
}
/// Define a plane along x=y axis vertical in Z and t
void test_getNormalVector_4D() {
std::vector<VMD> vectors;
vectors.emplace_back(VMD(1., 1., 0., 0.));
vectors.emplace_back(VMD(0., 0., 1., 0.));
vectors.emplace_back(VMD(0., 0., 0., 1.));
VMD normal = VMD::getNormalVector(vectors);
TS_ASSERT_EQUALS(normal, VMD(1., -1., 0., 0.) * sqrt(0.5));
}
};