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FrequencyStandardDeviationsTest.h
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FrequencyStandardDeviationsTest.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/BinEdges.h"
#include "MantidHistogramData/CountStandardDeviations.h"
#include "MantidHistogramData/CountVariances.h"
#include "MantidHistogramData/FrequencyStandardDeviations.h"
#include "MantidHistogramData/FrequencyVariances.h"
using namespace Mantid;
using namespace HistogramData;
class FrequencyStandardDeviationsTest : 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 FrequencyStandardDeviationsTest *createSuite() { return new FrequencyStandardDeviationsTest(); }
static void destroySuite(FrequencyStandardDeviationsTest *suite) { delete suite; }
void test_has_correct_mixins() {
FrequencyStandardDeviations data;
TS_ASSERT_THROWS_NOTHING(UNUSED_ARG(
(dynamic_cast<detail::StandardDeviationVectorOf<FrequencyStandardDeviations, HistogramE, FrequencyVariances> &>(
data))));
}
void test_construct_default() {
const FrequencyStandardDeviations points{};
TS_ASSERT(!points);
}
void test_construct_from_null_CountStandardDeviations() {
const CountStandardDeviations counts{};
const BinEdges edges{};
const FrequencyStandardDeviations frequencies(counts, edges);
TS_ASSERT(!frequencies);
}
void test_construct_from_empty_CountStandardDeviations() {
const CountStandardDeviations counts(0);
const BinEdges edges{0};
const FrequencyStandardDeviations frequencies(counts, edges);
TS_ASSERT_EQUALS(frequencies.size(), 0);
}
void test_construct_from_empty_CountStandardDeviations_null_BinEdges() {
const CountStandardDeviations counts(0);
const BinEdges edges{};
TS_ASSERT_THROWS(const FrequencyStandardDeviations frequencies(counts, edges), const std::logic_error &);
}
void test_construct_from_empty_CountStandardDeviations_size_mismatch() {
const CountStandardDeviations counts(0);
const BinEdges edges{1.0, 2.0};
TS_ASSERT_THROWS(const FrequencyStandardDeviations frequencies(counts, edges), const std::logic_error &);
}
void test_construct_from_CountStandardDeviations_null_BinEdges() {
const CountStandardDeviations counts(1);
const BinEdges edges{};
TS_ASSERT_THROWS(const FrequencyStandardDeviations frequencies(counts, edges), const std::logic_error &);
}
void test_construct_from_CountStandardDeviations_size_mismatch() {
const CountStandardDeviations counts(2);
const BinEdges edges{1.0, 2.0};
TS_ASSERT_THROWS(const FrequencyStandardDeviations frequencies(counts, edges), const std::logic_error &);
}
void test_construct_from_CountStandardDeviations() {
const CountStandardDeviations counts{1.0, 2.0};
const BinEdges edges{0.1, 0.2, 0.4};
const FrequencyStandardDeviations frequencies(counts, edges);
TS_ASSERT_EQUALS(frequencies.size(), 2);
TS_ASSERT_DELTA(frequencies[0], 10.0, 1e-14);
TS_ASSERT_DELTA(frequencies[1], 10.0, 1e-14);
}
void test_move_construct_from_CountStandardDeviations() {
CountStandardDeviations counts(1);
const BinEdges edges{1.0, 2.0};
auto old_ptr = &counts[0];
const FrequencyStandardDeviations frequencies(std::move(counts), edges);
TS_ASSERT(!counts);
TS_ASSERT_EQUALS(&frequencies[0], old_ptr);
}
void test_move_construct_from_CountStandardDeviations_and_cow() {
CountStandardDeviations counts(1);
const CountStandardDeviations copy(counts);
const BinEdges edges{1.0, 2.0};
auto old_ptr = &counts[0];
const FrequencyStandardDeviations frequencies(std::move(counts), edges);
// Moved from counts...
TS_ASSERT(!counts);
// ... but made a copy of data, since "copy" also held a reference.
TS_ASSERT_DIFFERS(&frequencies[0], old_ptr);
}
void test_construct_from_CountVariances() {
const CountVariances counts{1.0, 2.0};
const BinEdges edges{0.1, 0.2, 0.4};
// This implicitly constructs CountStandardDeviations first.
const FrequencyStandardDeviations frequencies(counts, edges);
TS_ASSERT_EQUALS(frequencies.size(), 2);
TS_ASSERT_DELTA(frequencies[0], 10.0, 1e-14);
TS_ASSERT_DELTA(frequencies[1], M_SQRT2 * 5.0, 1e-14);
}
void test_move_construct_from_CountVariances() {
CountVariances counts(1);
const BinEdges edges{1.0, 2.0};
auto old_ptr = &counts[0];
// This implicitly constructs CountStandardDeviations first, so there is a
// two-step move going on!
const FrequencyStandardDeviations frequencies(std::move(counts), edges);
TS_ASSERT(!counts);
TS_ASSERT_EQUALS(&frequencies[0], old_ptr);
}
};