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483 lines (401 loc) · 11.4 KB
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// Doesn't make sense to compile this without assertions!
#undef NDEBUG
#include <algorithm>
#include <iostream>
#include <set>
#include <vector>
#include <cassert>
#include "mtree.h"
#include "functions.h"
#include "tests/fixture.h"
#define assertEqual(A, B) assert(A == B);
#define assertLessEqual(A, B) assert(A <= B);
#define assertIn(ELEM, CONTAINER) assert(CONTAINER.find(ELEM) != CONTAINER.end());
#define assertNotIn(ELEM, CONTAINER) assert(CONTAINER.find(ELEM) == CONTAINER.end());
using namespace std;
typedef vector<int> Data;
typedef set<Data> DataSet;
typedef mt::functions::cached_distance_function<Data, mt::functions::euclidean_distance> CachedDistanceFunction;
typedef pair<Data, Data>(*PromotionFunction)(const DataSet&, CachedDistanceFunction&);
PromotionFunction nonRandomPromotion =
[](const DataSet& dataSet, CachedDistanceFunction&) -> pair<Data, Data> {
vector<Data> dataObjects(dataSet.begin(), dataSet.end());
sort(dataObjects.begin(), dataObjects.end());
return {dataObjects.front(), dataObjects.back()};
};
typedef mt::mtree<
Data,
mt::functions::euclidean_distance,
mt::functions::split_function<
PromotionFunction,
mt::functions::balanced_partition
>
>
MTree;
class MTreeTest : public MTree {
private:
struct OnExit {
MTreeTest* mt;
OnExit(MTreeTest* mt) : mt(mt) {}
~OnExit() { mt->_check(); }
};
public:
// Turning the member public
using MTree::distance_function;
MTreeTest()
: MTree(2, -1,
distance_function_type(),
split_function_type(nonRandomPromotion)
)
{}
void add(const Data& data) {
OnExit onExit(this);
return MTree::add(data);
}
bool remove(const Data& data) {
OnExit onExit(this);
return MTree::remove(data);
}
};
class Test {
public:
void testEmpty() {
_checkNearestByRange({1, 2, 3}, 4);
_checkNearestByLimit({1, 2, 3}, 4);
}
void test01() { _test("f01"); }
void test02() { _test("f02"); }
void test03() { _test("f03"); }
void test04() { _test("f04"); }
void test05() { _test("f05"); }
void test06() { _test("f06"); }
void test07() { _test("f07"); }
void test08() { _test("f08"); }
void test09() { _test("f09"); }
void test10() { _test("f10"); }
void test11() { _test("f11"); }
void test12() { _test("f12"); }
void test13() { _test("f13"); }
void test14() { _test("f14"); }
void test15() { _test("f15"); }
void test16() { _test("f16"); }
void test17() { _test("f17"); }
void test18() { _test("f18"); }
void test19() { _test("f19"); }
void test20() { _test("f20"); }
void testLots() { _test("fLots"); }
void testRemoveNonExisting() {
// Empty
assert(!mtree.remove({99, 77}));
// With some items
mtree.add({4, 44});
assert(!mtree.remove({99, 77}));
mtree.add({95, 43});
assert(!mtree.remove({99, 77}));
mtree.add({76, 21});
assert(!mtree.remove({99, 77}));
mtree.add({64, 53});
assert(!mtree.remove({99, 77}));
mtree.add({47, 3});
assert(!mtree.remove({99, 77}));
mtree.add({26, 11});
assert(!mtree.remove({99, 77}));
}
void testGeneratedCase01() { _test("fG01"); }
void testGeneratedCase02() { _test("fG02"); }
void testNotRandom() {
/*
* To generate a random test, execute the following commands:
* py/mtree/tests/fixtures/generator.py -a500 -r0.2 > py/mtree/tests/fixtures/fNotRandom.py
* cpp/convert-fixture-to-cpp.py fNotRandom > cpp/tests/fixtures/fNotRandom.txt
*/
const string fixtureName = "fNotRandom";
string fixtureFileName = Fixture::path(fixtureName);
if(!ifstream(fixtureFileName)) {
cout << "\tskipping..." << endl;
return;
}
_test(fixtureName.c_str());
}
void testIterators() {
struct DistanceFunction {
size_t operator()(int a, int b) const {
return std::abs(a - b);
}
};
mt::mtree<int, DistanceFunction> mt;
mt.add(1);
mt.add(2);
mt.add(3);
mt.add(4);
auto query = mt.get_nearest(0);
#define assertBeginEnd(ITER, BEGIN, END); \
assert(ITER BEGIN query.begin()); \
assert(ITER END query.end());
#define assertIter(ITER, BEGIN, END, DATA, DIST) \
assertBeginEnd(ITER, BEGIN, END); \
assertEqual(ITER->data, DATA); \
assertEqual(ITER->distance, DIST)
#define assertCompareIters(I1, C12, I2, C23, I3, C31, I1_) \
assert(I1 C12 I2); \
assert(I2 C23 I3); \
assert(I3 C31 I1_)
// The first iterator
auto i1 = query.begin();
/* 1 2 3 4 e
* i1: *
*/
assertIter(i1, ==, !=, 1, 1);
// Advance the iterator
i1++;
/* 1 2 3 4 e
* i1: *
*/
assertIter(i1, !=, !=, 2, 2);
// Advance again
++i1;
/* 1 2 3 4 e
* i1: *
*/
assertIter(i1, !=, !=, 3, 3);
// Begin another iteration
auto i2 = query.begin();
/* 1 2 3 4 e
* i1: *
* i2: *
*/
assertIter(i2, ==, !=, 1, 1);
assert(i2 != i1);
// The first iterator must not have been affected
assertIter(i1, !=, !=, 3, 3);
// Copy the first iterator
auto i3 = i1;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i3, !=, !=, 3, 3);
// The first iterator must not have been affected
assertIter(i1, !=, !=, 3, 3);
// The second iterator must not have been affected
assertIter(i2, ==, !=, 1, 1);
// Compare the iterators
assertCompareIters(i1, !=, i2, !=, i3, ==, i1);
// Now continue until all the iterators reach the end
++i2;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 3, 3);
assertIter(i2, !=, !=, 2, 2);
assertIter(i3, !=, !=, 3, 3);
assertCompareIters(i1, !=, i2, !=, i3, ==, i1);
i1++;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 4, 4);
assertIter(i2, !=, !=, 2, 2);
assertIter(i3, !=, !=, 3, 3);
assertCompareIters(i1, !=, i2, !=, i3, !=, i1);
i2++;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 4, 4);
assertIter(i2, !=, !=, 3, 3);
assertIter(i3, !=, !=, 3, 3);
assertCompareIters(i1, !=, i2, ==, i3, !=, i1);
++i3;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 4, 4);
assertIter(i2, !=, !=, 3, 3);
assertIter(i3, !=, !=, 4, 4);
assertCompareIters(i1, !=, i2, !=, i3, ==, i1);
i3++;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 4, 4);
assertIter(i2, !=, !=, 3, 3);
assertBeginEnd(i3, !=, ==);
assertCompareIters(i1, !=, i2, !=, i3, !=, i1);
++i2;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 4, 4);
assertIter(i2, !=, !=, 4, 4);
assertBeginEnd(i3, !=, ==);
assertCompareIters(i1, ==, i2, !=, i3, !=, i1);
++i2;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertIter(i1, !=, !=, 4, 4);
assertBeginEnd(i2, !=, ==);
assertBeginEnd(i3, !=, ==);
assertCompareIters(i1, !=, i2, ==, i3, !=, i1);
++i1;
/* 1 2 3 4 e
* i1: *
* i2: *
* i3: *
*/
assertBeginEnd(i1, !=, ==);
assertBeginEnd(i2, !=, ==);
assertBeginEnd(i3, !=, ==);
assertCompareIters(i1, ==, i2, ==, i3, ==, i1);
#undef assertIter
#undef assertCompareIters
}
private:
typedef vector<MTreeTest::query::result_item> ResultsVector;
MTreeTest mtree;
set<Data> allData;
void _test(const char* fixtureName) {
Fixture fixture = Fixture::load(fixtureName);
_testFixture(fixture);
}
void _testFixture(const Fixture& fixture) {
for(vector<Fixture::Action>::const_iterator i = fixture.actions.begin(); i != fixture.actions.end(); ++i) {
switch(i->cmd) {
case 'A':
allData.insert(i->data);
mtree.add(i->data);
break;
case 'R': {
allData.erase(i->data);
bool removed = mtree.remove(i->data);
assert(removed);
break;
}
default:
cerr << i->cmd << endl;
assert(false);
break;
}
_checkNearestByRange(i->queryData, i->radius);
_checkNearestByLimit(i->queryData, i->limit);
}
}
void _checkNearestByRange(const Data& queryData, double radius) const {
ResultsVector results;
set<Data> strippedResults;
MTreeTest::query query = mtree.get_nearest_by_range(queryData, radius);
for(MTreeTest::query::iterator i = query.begin(); i != query.end(); ++i) {
MTreeTest::query::value_type r = *i;
results.push_back(r);
strippedResults.insert(r.data);
}
double previousDistance = 0;
for(ResultsVector::iterator i = results.begin(); i != results.end(); i++) {
// Check if increasing distance
assertLessEqual(previousDistance, i->distance);
previousDistance = i->distance;
// Check if every item in the results came from the generated queryData
assertIn(i->data, allData);
// Check if every item in the results is within the range
assertLessEqual(i->distance, radius);
assertEqual(mtree.distance_function(i->data, queryData), i->distance);
}
for(set<Data>::const_iterator data = allData.begin(); data != allData.end(); ++data) {
double distance = mtree.distance_function(*data, queryData);
if(distance <= radius) {
assertIn(*data, strippedResults);
} else {
assertNotIn(*data, strippedResults);
}
}
}
void _checkNearestByLimit(const Data& queryData, unsigned int limit) const {
ResultsVector results;
set<Data> strippedResults;
MTreeTest::query query = mtree.get_nearest_by_limit(queryData, limit);
for(MTreeTest::query::iterator i = query.begin(); i != query.end(); i++) {
MTreeTest::query::result_item r = *i;
results.push_back(r);
strippedResults.insert(r.data);
}
if(limit <= allData.size()) {
assertEqual(limit, results.size());
} else {
// limit > allData.size()
assertEqual(allData.size(), results.size());
}
double farthest = 0.0;
double previousDistance = 0.0;
for(ResultsVector::iterator i = results.begin(); i != results.end(); ++i) {
// Check if increasing distance
assertLessEqual(previousDistance, i->distance);
previousDistance = i->distance;
// Check if every item in the results came from the generated queryData
assertIn(i->data, allData);
// Check if items are not repeated
assertEqual(1, count(strippedResults.begin(), strippedResults.end(), i->data));
double distance = mtree.distance_function(i->data, queryData);
assertEqual(distance, i->distance);
farthest = max(farthest, distance);
}
for(set<Data>::iterator pData = allData.begin(); pData != allData.end(); ++pData) {
double distance = mtree.distance_function(*pData, queryData);
if(distance < farthest) {
assertIn(*pData, strippedResults);
} else if(distance > farthest) {
assertNotIn(*pData, strippedResults);
} else {
// distance == farthest
}
}
}
};
int main() {
#define RUN_TEST(T) cout << "Running " #T "..." << endl; Test().T()
RUN_TEST(testEmpty);
RUN_TEST(test01);
RUN_TEST(test02);
RUN_TEST(test03);
RUN_TEST(test04);
RUN_TEST(test05);
RUN_TEST(test06);
RUN_TEST(test07);
RUN_TEST(test08);
RUN_TEST(test09);
RUN_TEST(test10);
RUN_TEST(test11);
RUN_TEST(test12);
RUN_TEST(test13);
RUN_TEST(test14);
RUN_TEST(test15);
RUN_TEST(test16);
RUN_TEST(test17);
RUN_TEST(test18);
RUN_TEST(test19);
RUN_TEST(test20);
RUN_TEST(testLots);
RUN_TEST(testRemoveNonExisting);
RUN_TEST(testGeneratedCase01);
RUN_TEST(testGeneratedCase02);
RUN_TEST(testNotRandom);
RUN_TEST(testIterators);
#undef RUN_TEST
cout << "DONE" << endl;
return 0;
}
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