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SliceTest.h
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SliceTest.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/Slice.h"
using namespace Mantid::HistogramData;
class SliceTest : 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 SliceTest *createSuite() { return new SliceTest(); }
static void destroySuite(SliceTest *suite) { delete suite; }
void test_out_of_range() {
const Histogram histogram(BinEdges{1, 2, 3});
TS_ASSERT_THROWS_EQUALS(slice(histogram, 1, 0), const std::out_of_range &e, std::string(e.what()),
"Histogram slice: begin must not be greater than end");
TS_ASSERT_THROWS_EQUALS(slice(histogram, 0, 3), const std::out_of_range &e, std::string(e.what()),
"Histogram slice: end may not be larger than the histogram size");
}
void test_empty_slice() {
const Histogram histogram(BinEdges{1, 2, 3});
auto sliced = slice(histogram, 1, 1);
TS_ASSERT_EQUALS(sliced.size(), 0);
TS_ASSERT_EQUALS(sliced.x().size(), 0);
}
void test_empty_slice_point_data() {
const Histogram histogram(Points{1, 2});
auto sliced = slice(histogram, 1, 1);
TS_ASSERT_EQUALS(sliced.size(), 0);
TS_ASSERT_EQUALS(sliced.x().size(), 0);
}
void test_full_range_sharing_maintained() {
const Histogram histogram(BinEdges{1, 2, 3}, Counts{4, 9});
auto sliced = slice(histogram, 0, 2);
TS_ASSERT_EQUALS(sliced.sharedX(), histogram.sharedX());
TS_ASSERT_EQUALS(sliced.sharedY(), histogram.sharedY());
TS_ASSERT_EQUALS(sliced.sharedE(), histogram.sharedE());
TS_ASSERT(!sliced.sharedDx());
}
void test_slices_dx() {
Histogram histogram(BinEdges{1, 2, 3}, Counts{4, 9});
histogram.setPointStandardDeviations(2);
auto sliced = slice(histogram, 0, 2);
TS_ASSERT_EQUALS(sliced.dx(), histogram.dx());
}
void test_slice_single_bin_at_start() {
const Histogram histogram(BinEdges{1, 2, 3, 4}, Counts{4, 9, 16});
auto sliced = slice(histogram, 0, 1);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({1, 2}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({4}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({2}));
}
void test_slice_single_bin() {
const Histogram histogram(BinEdges{1, 2, 3, 4}, Counts{4, 9, 16});
auto sliced = slice(histogram, 1, 2);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({2, 3}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({9}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({3}));
}
void test_slice_single_bin_at_end() {
const Histogram histogram(BinEdges{1, 2, 3, 4}, Counts{4, 9, 16});
auto sliced = slice(histogram, 2, 3);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({3, 4}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({16}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({4}));
}
void test_points_slice_single_bin_at_start() {
const Histogram histogram(Points{1, 2, 3}, Counts{4, 9, 16});
auto sliced = slice(histogram, 0, 1);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({1}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({4}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({2}));
}
void test_points_slice_single_bin() {
const Histogram histogram(Points{1, 2, 3}, Counts{4, 9, 16});
auto sliced = slice(histogram, 1, 2);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({2}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({9}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({3}));
}
void test_points_slice_single_bin_at_end() {
const Histogram histogram(Points{1, 2, 3}, Counts{4, 9, 16});
auto sliced = slice(histogram, 2, 3);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({3}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({16}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({4}));
}
void test_slice_two_bins_at_start() {
const Histogram histogram(BinEdges{1, 2, 3, 4, 5}, Counts{1, 4, 9, 16});
auto sliced = slice(histogram, 0, 2);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({1, 2, 3}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({1, 4}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({1, 2}));
}
void test_slice_two_bins() {
const Histogram histogram(BinEdges{1, 2, 3, 4, 5}, Counts{1, 4, 9, 16});
auto sliced = slice(histogram, 1, 3);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({2, 3, 4}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({4, 9}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({2, 3}));
}
void test_slice_two_bins_at_end() {
const Histogram histogram(BinEdges{1, 2, 3, 4, 5}, Counts{1, 4, 9, 16});
auto sliced = slice(histogram, 2, 4);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({3, 4, 5}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({9, 16}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({3, 4}));
}
void test_points_slice_two_bins_at_start() {
const Histogram histogram(Points{1, 2, 3, 4}, Counts{1, 4, 9, 16});
auto sliced = slice(histogram, 0, 2);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({1, 2}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({1, 4}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({1, 2}));
}
void test_points_slice_two_bins() {
const Histogram histogram(Points{1, 2, 3, 4}, Counts{1, 4, 9, 16});
auto sliced = slice(histogram, 1, 3);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({2, 3}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({4, 9}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({2, 3}));
}
void test_points_slice_two_bins_at_end() {
const Histogram histogram(Points{1, 2, 3, 4}, Counts{1, 4, 9, 16});
auto sliced = slice(histogram, 2, 4);
TS_ASSERT_EQUALS(sliced.x(), HistogramX({3, 4}));
TS_ASSERT_EQUALS(sliced.y(), HistogramY({9, 16}));
TS_ASSERT_EQUALS(sliced.e(), HistogramE({3, 4}));
}
};