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FixedLengthVectorTest.h
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FixedLengthVectorTest.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 <cxxtest/TestSuite.h>
#include "MantidHistogramData/FixedLengthVector.h"
#include "MantidKernel/make_cow.h"
using Mantid::HistogramData::detail::FixedLengthVector;
using Mantid::Kernel::make_cow;
struct FixedLengthVectorTester : public FixedLengthVector<FixedLengthVectorTester> {
FixedLengthVectorTester() = default;
~FixedLengthVectorTester() = default;
FixedLengthVectorTester(const FixedLengthVectorTester &) = default;
FixedLengthVectorTester(FixedLengthVectorTester &&) = default;
FixedLengthVectorTester &operator=(const FixedLengthVectorTester &) = default;
FixedLengthVectorTester &operator=(FixedLengthVectorTester &&) = default;
using FixedLengthVector<FixedLengthVectorTester>::FixedLengthVector;
using FixedLengthVector<FixedLengthVectorTester>::operator=;
};
class FixedLengthVectorTest : public CxxTest::TestSuite {
public:
// This pair of boilerplate methods prevent the suite being created statically
// This means the constructor isn't called when running other tests
static FixedLengthVectorTest *createSuite() { return new FixedLengthVectorTest(); }
static void destroySuite(FixedLengthVectorTest *suite) { delete suite; }
void test_empty_constructor() {
const FixedLengthVectorTester values{};
TS_ASSERT_EQUALS(values.size(), 0);
}
void test_length_zero_constructor() {
const FixedLengthVectorTester values(0);
TS_ASSERT_EQUALS(values.size(), 0);
}
void test_count_value_constructor() {
const FixedLengthVectorTester values(2, 0.1);
TS_ASSERT_EQUALS(values.size(), 2);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.1);
}
void test_length_zero_value_constructor() {
const FixedLengthVectorTester values(0, 0.1);
TS_ASSERT_EQUALS(values.size(), 0);
}
void test_count_constructor() {
const FixedLengthVectorTester values(2);
TS_ASSERT_EQUALS(values.size(), 2);
TS_ASSERT_EQUALS(values[0], 0.0);
TS_ASSERT_EQUALS(values[1], 0.0);
}
void test_initializer_list_constructor() {
const FixedLengthVectorTester values{0.1, 0.2, 0.3};
TS_ASSERT_EQUALS(values.size(), 3);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.2);
TS_ASSERT_EQUALS(values[2], 0.3);
}
void test_empty_initializer_list_constructor() {
std::initializer_list<double> empty_list;
const FixedLengthVectorTester values(empty_list);
TS_ASSERT_EQUALS(values.size(), 0);
}
void test_copy_constructor() {
const FixedLengthVectorTester src(2, 0.1);
const FixedLengthVectorTester dest(src);
TS_ASSERT_EQUALS(dest[0], 0.1);
TS_ASSERT_EQUALS(dest[1], 0.1);
}
void test_move_constructor() {
FixedLengthVectorTester src(2, 0.1);
TS_ASSERT_EQUALS(src.size(), 2);
const FixedLengthVectorTester dest(std::move(src));
TS_ASSERT_EQUALS(dest[0], 0.1);
TS_ASSERT_EQUALS(dest[1], 0.1);
}
void test_iterator_constructor() {
std::vector<double> data{0.1, 0.2, 0.3, 0.4};
FixedLengthVectorTester testee(data.begin() + 1, data.end() - 1);
TS_ASSERT_EQUALS(testee.size(), 2);
TS_ASSERT_EQUALS(testee[0], 0.2);
TS_ASSERT_EQUALS(testee[1], 0.3);
}
void test_generator_constructor() {
FixedLengthVectorTester testee(2, []() { return 0.1; });
TS_ASSERT_EQUALS(testee.size(), 2);
TS_ASSERT_EQUALS(testee[0], 0.1);
TS_ASSERT_EQUALS(testee[1], 0.1);
}
void test_iterator_constructor_special_case() {
// Used like this, we might think that the (count, value) constructor is
// called. However, that would require converting the second int to a
// double, so actually the templated iterator constructor matches. We could
// prevent that with some complicated SFINAE (as done by std::vector),
// however it actually does not seem to matter: We just forward to the
// std::vector constructor, where the templated constructor does not work,
// so we are back to the std::vector(count, value) constructor, after the
// detour to the templated FixedLengthVector constructor.
FixedLengthVectorTester testee(3, 1);
TS_ASSERT_EQUALS(testee.size(), 3);
TS_ASSERT_EQUALS(testee[0], 1.0);
TS_ASSERT_EQUALS(testee[1], 1.0);
TS_ASSERT_EQUALS(testee[2], 1.0);
}
void test_range_assignment() {
std::vector<double> src{3.6, 9.7, 8.5};
FixedLengthVectorTester dest(3);
dest.assign(src.cbegin(), src.cend());
TS_ASSERT_EQUALS(dest.size(), 3);
TS_ASSERT_EQUALS(dest[0], src[0]);
TS_ASSERT_EQUALS(dest[1], src[1]);
TS_ASSERT_EQUALS(dest[2], src[2]);
}
void test_range_assignment_fail() {
std::vector<double> src(10, 0);
FixedLengthVectorTester dest(5);
TS_ASSERT_THROWS(dest.assign(src.cbegin(), src.cend()), const std::logic_error &);
}
void test_length_value_assignment() {
FixedLengthVectorTester dest(4);
dest.assign(4, 3.9);
TS_ASSERT_EQUALS(dest.size(), 4);
TS_ASSERT_EQUALS(dest[0], 3.9);
TS_ASSERT_EQUALS(dest[1], 3.9);
TS_ASSERT_EQUALS(dest[2], 3.9);
TS_ASSERT_EQUALS(dest[3], 3.9);
}
void test_value_assignment_fail() {
FixedLengthVectorTester dest(3);
TS_ASSERT_THROWS(dest.assign(20, 4.5), const std::logic_error &);
}
void test_copy_assignment() {
const FixedLengthVectorTester src(2, 0.1);
FixedLengthVectorTester dest(2);
dest = src;
TS_ASSERT_EQUALS(dest.size(), 2);
TS_ASSERT_EQUALS(dest[0], 0.1);
TS_ASSERT_EQUALS(dest[1], 0.1);
}
void test_assignment() {
const FixedLengthVectorTester src(2, 0.1);
FixedLengthVectorTester dest = src;
TS_ASSERT_EQUALS(dest.size(), 2);
TS_ASSERT_EQUALS(dest[0], 0.1);
TS_ASSERT_EQUALS(dest[1], 0.1);
}
void test_move_rval_ref() {
FixedLengthVectorTester src(2, 0.1);
FixedLengthVectorTester dest(2);
dest = std::move(src);
TS_ASSERT_EQUALS(dest[0], 0.1);
TS_ASSERT_EQUALS(dest[1], 0.1);
}
void test_move_assignment() {
FixedLengthVectorTester src(2, 0.1);
FixedLengthVectorTester dest = std::move(src);
TS_ASSERT_EQUALS(dest.size(), 2);
TS_ASSERT_EQUALS(dest[0], 0.1);
TS_ASSERT_EQUALS(dest[1], 0.1);
}
void test_initializer_list_assignment() {
FixedLengthVectorTester values(3);
values = {0.1, 0.2, 0.3};
TS_ASSERT_EQUALS(values.size(), 3);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.2);
TS_ASSERT_EQUALS(values[2], 0.3);
}
void test_empty_initializer_list_assignment() {
std::initializer_list<double> empty_list;
FixedLengthVectorTester values(0);
values = empty_list;
TS_ASSERT_EQUALS(values.size(), 0);
}
void test_initializer_list_assignment_fail() {
FixedLengthVectorTester values(2);
TS_ASSERT_THROWS((values = {0.1, 0.2, 0.3}), const std::logic_error &);
}
void test_vector_constructor() {
const std::vector<double> vector(2, 0.1);
FixedLengthVectorTester values(vector);
TS_ASSERT_EQUALS(values.size(), 2);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.1);
}
void test_vector_move_constructor() {
std::vector<double> vector(2, 0.1);
FixedLengthVectorTester values(std::move(vector));
TS_ASSERT_EQUALS(vector.size(), 0);
TS_ASSERT_EQUALS(values.size(), 2);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.1);
}
void test_vector_assignment() {
const std::vector<double> vector{0.1, 0.2};
FixedLengthVectorTester values(2);
TS_ASSERT_THROWS_NOTHING(values = vector);
TS_ASSERT_EQUALS(values.size(), 2);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.2);
}
void test_vector_move_assignment() {
std::vector<double> vector{0.1, 0.2};
FixedLengthVectorTester values(2);
TS_ASSERT_THROWS_NOTHING(values = std::move(vector));
TS_ASSERT_EQUALS(values.size(), 2);
TS_ASSERT_EQUALS(values[0], 0.1);
TS_ASSERT_EQUALS(values[1], 0.2);
}
void test_value_assignment() {
FixedLengthVectorTester dest(4);
dest = 3.9;
TS_ASSERT_EQUALS(dest.size(), 4);
TS_ASSERT_EQUALS(dest[0], 3.9);
TS_ASSERT_EQUALS(dest[1], 3.9);
TS_ASSERT_EQUALS(dest[2], 3.9);
TS_ASSERT_EQUALS(dest[3], 3.9);
}
void test_empty() {
TS_ASSERT_EQUALS(FixedLengthVectorTester(0).empty(), true);
TS_ASSERT_EQUALS(FixedLengthVectorTester(1).empty(), false);
}
void test_size() {
const FixedLengthVectorTester values(42);
TS_ASSERT_EQUALS(values.size(), 42);
}
void test_const_index_operator() {
const FixedLengthVectorTester data{0.1, 0.2};
TS_ASSERT_EQUALS(data[0], 0.1);
TS_ASSERT_EQUALS(data[1], 0.2);
}
void test_index_operator() {
FixedLengthVectorTester data{0.1, 0.2};
TS_ASSERT_EQUALS(data[0], 0.1);
TS_ASSERT_EQUALS(data[1], 0.2);
}
void test_front_back() {
FixedLengthVectorTester data{0.1, 0.2, 0.4};
data.front() += 1.0;
data.back() += 1.0;
TS_ASSERT_EQUALS(data.front(), 1.1);
TS_ASSERT_EQUALS(data.back(), 1.4);
}
void test_const_front_back() {
const FixedLengthVectorTester data{0.1, 0.2, 0.4};
TS_ASSERT_EQUALS(data.front(), 0.1);
TS_ASSERT_EQUALS(data.back(), 0.4);
}
void test_sum_vector() {
const FixedLengthVectorTester data{0.1, 0.2, 0.4};
TS_ASSERT_DELTA(data.sum(), 0.7, 1e-6);
TS_ASSERT_DELTA(data.sum(1), 0.6, 1e-6);
TS_ASSERT_DELTA(data.sum(0, 2), 0.3, 1e-6);
TS_ASSERT_DELTA(data.sum(0, 2, 10.0), 10.3, 1e-6);
}
};