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// Copyright (c) 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/third_party/quiche/src/quic/core/quic_interval.h"
#include <sstream>
#include <string>
#include <type_traits>
#include <utility>
#include "net/third_party/quiche/src/quic/core/quic_time.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
namespace quic {
namespace test {
namespace {
template <typename ForwardIterator>
void STLDeleteContainerPointers(ForwardIterator begin, ForwardIterator end) {
while (begin != end) {
auto temp = begin;
++begin;
delete *temp;
}
}
template <typename T>
void STLDeleteElements(T* container) {
if (!container)
return;
STLDeleteContainerPointers(container->begin(), container->end());
container->clear();
}
class ConstructorListener {
public:
ConstructorListener(int* copy_construct_counter, int* move_construct_counter)
: copy_construct_counter_(copy_construct_counter),
move_construct_counter_(move_construct_counter) {
*copy_construct_counter_ = 0;
*move_construct_counter_ = 0;
}
ConstructorListener(const ConstructorListener& other) {
copy_construct_counter_ = other.copy_construct_counter_;
move_construct_counter_ = other.move_construct_counter_;
++*copy_construct_counter_;
}
ConstructorListener(ConstructorListener&& other) {
copy_construct_counter_ = other.copy_construct_counter_;
move_construct_counter_ = other.move_construct_counter_;
++*move_construct_counter_;
}
bool operator<(const ConstructorListener&) { return false; }
bool operator>(const ConstructorListener&) { return false; }
bool operator<=(const ConstructorListener&) { return true; }
bool operator>=(const ConstructorListener&) { return true; }
bool operator==(const ConstructorListener&) { return true; }
private:
int* copy_construct_counter_;
int* move_construct_counter_;
};
TEST(IntervalConstructorTest, Move) {
int object1_copy_count, object1_move_count;
ConstructorListener object1(&object1_copy_count, &object1_move_count);
int object2_copy_count, object2_move_count;
ConstructorListener object2(&object2_copy_count, &object2_move_count);
QuicInterval<ConstructorListener> interval(object1, std::move(object2));
EXPECT_EQ(1, object1_copy_count);
EXPECT_EQ(0, object1_move_count);
EXPECT_EQ(0, object2_copy_count);
EXPECT_EQ(1, object2_move_count);
}
TEST(IntervalConstructorTest, ImplicitConversion) {
struct WrappedInt {
WrappedInt(int value) : value(value) {}
bool operator<(const WrappedInt& other) { return value < other.value; }
bool operator>(const WrappedInt& other) { return value > other.value; }
bool operator<=(const WrappedInt& other) { return value <= other.value; }
bool operator>=(const WrappedInt& other) { return value >= other.value; }
bool operator==(const WrappedInt& other) { return value == other.value; }
int value;
};
static_assert(std::is_convertible<int, WrappedInt>::value, "");
static_assert(
std::is_constructible<QuicInterval<WrappedInt>, int, int>::value, "");
QuicInterval<WrappedInt> i(10, 20);
EXPECT_EQ(10, i.min().value);
EXPECT_EQ(20, i.max().value);
}
class IntervalTest : public QuicTest {
protected:
// Test intersection between the two intervals i1 and i2. Tries
// i1.IntersectWith(i2) and vice versa. The intersection should change i1 iff
// changes_i1 is true, and the same for changes_i2. The resulting
// intersection should be result.
void TestIntersect(const QuicInterval<int64_t>& i1,
const QuicInterval<int64_t>& i2,
bool changes_i1,
bool changes_i2,
const QuicInterval<int64_t>& result) {
QuicInterval<int64_t> i;
i = i1;
EXPECT_TRUE(i.IntersectWith(i2) == changes_i1 && i == result);
i = i2;
EXPECT_TRUE(i.IntersectWith(i1) == changes_i2 && i == result);
}
};
TEST_F(IntervalTest, ConstructorsCopyAndClear) {
QuicInterval<int32_t> empty;
EXPECT_TRUE(empty.Empty());
QuicInterval<int32_t> d2(0, 100);
EXPECT_EQ(0, d2.min());
EXPECT_EQ(100, d2.max());
EXPECT_EQ(QuicInterval<int32_t>(0, 100), d2);
EXPECT_NE(QuicInterval<int32_t>(0, 99), d2);
empty = d2;
EXPECT_EQ(0, d2.min());
EXPECT_EQ(100, d2.max());
EXPECT_TRUE(empty == d2);
EXPECT_EQ(empty, d2);
EXPECT_TRUE(d2 == empty);
EXPECT_EQ(d2, empty);
QuicInterval<int32_t> max_less_than_min(40, 20);
EXPECT_TRUE(max_less_than_min.Empty());
EXPECT_EQ(40, max_less_than_min.min());
EXPECT_EQ(20, max_less_than_min.max());
QuicInterval<int> d3(10, 20);
d3.Clear();
EXPECT_TRUE(d3.Empty());
}
TEST_F(IntervalTest, MakeQuicInterval) {
static_assert(
std::is_same<QuicInterval<int>, decltype(MakeQuicInterval(0, 3))>::value,
"Type is deduced incorrectly.");
static_assert(std::is_same<QuicInterval<double>,
decltype(MakeQuicInterval(0., 3.))>::value,
"Type is deduced incorrectly.");
EXPECT_EQ(MakeQuicInterval(0., 3.), QuicInterval<double>(0, 3));
}
TEST_F(IntervalTest, GettersSetters) {
QuicInterval<int32_t> d1(100, 200);
// SetMin:
d1.SetMin(30);
EXPECT_EQ(30, d1.min());
EXPECT_EQ(200, d1.max());
// SetMax:
d1.SetMax(220);
EXPECT_EQ(30, d1.min());
EXPECT_EQ(220, d1.max());
// Set:
d1.Clear();
d1.Set(30, 220);
EXPECT_EQ(30, d1.min());
EXPECT_EQ(220, d1.max());
// SpanningUnion:
QuicInterval<int32_t> d2;
EXPECT_TRUE(!d1.SpanningUnion(d2));
EXPECT_EQ(30, d1.min());
EXPECT_EQ(220, d1.max());
EXPECT_TRUE(d2.SpanningUnion(d1));
EXPECT_EQ(30, d2.min());
EXPECT_EQ(220, d2.max());
d2.SetMin(40);
d2.SetMax(100);
EXPECT_TRUE(!d1.SpanningUnion(d2));
EXPECT_EQ(30, d1.min());
EXPECT_EQ(220, d1.max());
d2.SetMin(20);
d2.SetMax(100);
EXPECT_TRUE(d1.SpanningUnion(d2));
EXPECT_EQ(20, d1.min());
EXPECT_EQ(220, d1.max());
d2.SetMin(50);
d2.SetMax(300);
EXPECT_TRUE(d1.SpanningUnion(d2));
EXPECT_EQ(20, d1.min());
EXPECT_EQ(300, d1.max());
d2.SetMin(0);
d2.SetMax(500);
EXPECT_TRUE(d1.SpanningUnion(d2));
EXPECT_EQ(0, d1.min());
EXPECT_EQ(500, d1.max());
d2.SetMin(100);
d2.SetMax(0);
EXPECT_TRUE(!d1.SpanningUnion(d2));
EXPECT_EQ(0, d1.min());
EXPECT_EQ(500, d1.max());
EXPECT_TRUE(d2.SpanningUnion(d1));
EXPECT_EQ(0, d2.min());
EXPECT_EQ(500, d2.max());
}
TEST_F(IntervalTest, CoveringOps) {
const QuicInterval<int64_t> empty;
const QuicInterval<int64_t> d(100, 200);
const QuicInterval<int64_t> d1(0, 50);
const QuicInterval<int64_t> d2(50, 110);
const QuicInterval<int64_t> d3(110, 180);
const QuicInterval<int64_t> d4(180, 220);
const QuicInterval<int64_t> d5(220, 300);
const QuicInterval<int64_t> d6(100, 150);
const QuicInterval<int64_t> d7(150, 200);
const QuicInterval<int64_t> d8(0, 300);
// Intersection:
EXPECT_TRUE(d.Intersects(d));
EXPECT_TRUE(!empty.Intersects(d) && !d.Intersects(empty));
EXPECT_TRUE(!d.Intersects(d1) && !d1.Intersects(d));
EXPECT_TRUE(d.Intersects(d2) && d2.Intersects(d));
EXPECT_TRUE(d.Intersects(d3) && d3.Intersects(d));
EXPECT_TRUE(d.Intersects(d4) && d4.Intersects(d));
EXPECT_TRUE(!d.Intersects(d5) && !d5.Intersects(d));
EXPECT_TRUE(d.Intersects(d6) && d6.Intersects(d));
EXPECT_TRUE(d.Intersects(d7) && d7.Intersects(d));
EXPECT_TRUE(d.Intersects(d8) && d8.Intersects(d));
QuicInterval<int64_t> i;
EXPECT_TRUE(d.Intersects(d, &i) && d == i);
EXPECT_TRUE(!empty.Intersects(d, nullptr) && !d.Intersects(empty, nullptr));
EXPECT_TRUE(!d.Intersects(d1, nullptr) && !d1.Intersects(d, nullptr));
EXPECT_TRUE(d.Intersects(d2, &i) && i == QuicInterval<int64_t>(100, 110));
EXPECT_TRUE(d2.Intersects(d, &i) && i == QuicInterval<int64_t>(100, 110));
EXPECT_TRUE(d.Intersects(d3, &i) && i == d3);
EXPECT_TRUE(d3.Intersects(d, &i) && i == d3);
EXPECT_TRUE(d.Intersects(d4, &i) && i == QuicInterval<int64_t>(180, 200));
EXPECT_TRUE(d4.Intersects(d, &i) && i == QuicInterval<int64_t>(180, 200));
EXPECT_TRUE(!d.Intersects(d5, nullptr) && !d5.Intersects(d, nullptr));
EXPECT_TRUE(d.Intersects(d6, &i) && i == d6);
EXPECT_TRUE(d6.Intersects(d, &i) && i == d6);
EXPECT_TRUE(d.Intersects(d7, &i) && i == d7);
EXPECT_TRUE(d7.Intersects(d, &i) && i == d7);
EXPECT_TRUE(d.Intersects(d8, &i) && i == d);
EXPECT_TRUE(d8.Intersects(d, &i) && i == d);
// Test IntersectsWith().
// Arguments are TestIntersect(i1, i2, changes_i1, changes_i2, result).
TestIntersect(empty, d, false, true, empty);
TestIntersect(d, d1, true, true, empty);
TestIntersect(d1, d2, true, true, empty);
TestIntersect(d, d2, true, true, QuicInterval<int64_t>(100, 110));
TestIntersect(d8, d, true, false, d);
TestIntersect(d8, d1, true, false, d1);
TestIntersect(d8, d5, true, false, d5);
// Contains:
EXPECT_TRUE(!empty.Contains(d) && !d.Contains(empty));
EXPECT_TRUE(d.Contains(d));
EXPECT_TRUE(!d.Contains(d1) && !d1.Contains(d));
EXPECT_TRUE(!d.Contains(d2) && !d2.Contains(d));
EXPECT_TRUE(d.Contains(d3) && !d3.Contains(d));
EXPECT_TRUE(!d.Contains(d4) && !d4.Contains(d));
EXPECT_TRUE(!d.Contains(d5) && !d5.Contains(d));
EXPECT_TRUE(d.Contains(d6) && !d6.Contains(d));
EXPECT_TRUE(d.Contains(d7) && !d7.Contains(d));
EXPECT_TRUE(!d.Contains(d8) && d8.Contains(d));
EXPECT_TRUE(d.Contains(100));
EXPECT_TRUE(!d.Contains(200));
EXPECT_TRUE(d.Contains(150));
EXPECT_TRUE(!d.Contains(99));
EXPECT_TRUE(!d.Contains(201));
// Difference:
std::vector<QuicInterval<int64_t>*> diff;
EXPECT_TRUE(!d.Difference(empty, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(100, diff[0]->min());
EXPECT_EQ(200, diff[0]->max());
STLDeleteElements(&diff);
EXPECT_TRUE(!empty.Difference(d, &diff) && diff.empty());
EXPECT_TRUE(d.Difference(d, &diff) && diff.empty());
EXPECT_TRUE(!d.Difference(d1, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(100, diff[0]->min());
EXPECT_EQ(200, diff[0]->max());
STLDeleteElements(&diff);
QuicInterval<int64_t> lo;
QuicInterval<int64_t> hi;
EXPECT_TRUE(d.Difference(d2, &lo, &hi));
EXPECT_TRUE(lo.Empty());
EXPECT_EQ(110, hi.min());
EXPECT_EQ(200, hi.max());
EXPECT_TRUE(d.Difference(d2, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(110, diff[0]->min());
EXPECT_EQ(200, diff[0]->max());
STLDeleteElements(&diff);
EXPECT_TRUE(d.Difference(d3, &lo, &hi));
EXPECT_EQ(100, lo.min());
EXPECT_EQ(110, lo.max());
EXPECT_EQ(180, hi.min());
EXPECT_EQ(200, hi.max());
EXPECT_TRUE(d.Difference(d3, &diff));
EXPECT_EQ(2, diff.size());
EXPECT_EQ(100, diff[0]->min());
EXPECT_EQ(110, diff[0]->max());
EXPECT_EQ(180, diff[1]->min());
EXPECT_EQ(200, diff[1]->max());
STLDeleteElements(&diff);
EXPECT_TRUE(d.Difference(d4, &lo, &hi));
EXPECT_EQ(100, lo.min());
EXPECT_EQ(180, lo.max());
EXPECT_TRUE(hi.Empty());
EXPECT_TRUE(d.Difference(d4, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(100, diff[0]->min());
EXPECT_EQ(180, diff[0]->max());
STLDeleteElements(&diff);
EXPECT_FALSE(d.Difference(d5, &lo, &hi));
EXPECT_EQ(100, lo.min());
EXPECT_EQ(200, lo.max());
EXPECT_TRUE(hi.Empty());
EXPECT_FALSE(d.Difference(d5, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(100, diff[0]->min());
EXPECT_EQ(200, diff[0]->max());
STLDeleteElements(&diff);
EXPECT_TRUE(d.Difference(d6, &lo, &hi));
EXPECT_TRUE(lo.Empty());
EXPECT_EQ(150, hi.min());
EXPECT_EQ(200, hi.max());
EXPECT_TRUE(d.Difference(d6, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(150, diff[0]->min());
EXPECT_EQ(200, diff[0]->max());
STLDeleteElements(&diff);
EXPECT_TRUE(d.Difference(d7, &lo, &hi));
EXPECT_EQ(100, lo.min());
EXPECT_EQ(150, lo.max());
EXPECT_TRUE(hi.Empty());
EXPECT_TRUE(d.Difference(d7, &diff));
EXPECT_EQ(1, diff.size());
EXPECT_EQ(100, diff[0]->min());
EXPECT_EQ(150, diff[0]->max());
STLDeleteElements(&diff);
EXPECT_TRUE(d.Difference(d8, &lo, &hi));
EXPECT_TRUE(lo.Empty());
EXPECT_TRUE(hi.Empty());
EXPECT_TRUE(d.Difference(d8, &diff) && diff.empty());
}
TEST_F(IntervalTest, Length) {
const QuicInterval<int> empty1;
const QuicInterval<int> empty2(1, 1);
const QuicInterval<int> empty3(1, 0);
const QuicInterval<QuicTime> empty4(
QuicTime::Zero() + QuicTime::Delta::FromSeconds(1), QuicTime::Zero());
const QuicInterval<int> d1(1, 2);
const QuicInterval<int> d2(0, 50);
const QuicInterval<QuicTime> d3(
QuicTime::Zero(), QuicTime::Zero() + QuicTime::Delta::FromSeconds(1));
const QuicInterval<QuicTime> d4(
QuicTime::Zero() + QuicTime::Delta::FromSeconds(3600),
QuicTime::Zero() + QuicTime::Delta::FromSeconds(5400));
EXPECT_EQ(0, empty1.Length());
EXPECT_EQ(0, empty2.Length());
EXPECT_EQ(0, empty3.Length());
EXPECT_EQ(QuicTime::Delta::Zero(), empty4.Length());
EXPECT_EQ(1, d1.Length());
EXPECT_EQ(50, d2.Length());
EXPECT_EQ(QuicTime::Delta::FromSeconds(1), d3.Length());
EXPECT_EQ(QuicTime::Delta::FromSeconds(1800), d4.Length());
}
TEST_F(IntervalTest, IntervalOfTypeWithNoOperatorMinus) {
// QuicInterval<T> should work even if T does not support operator-(). We
// just can't call QuicInterval<T>::Length() for such types.
const QuicInterval<string> d1("a", "b");
const QuicInterval<std::pair<int, int>> d2({1, 2}, {4, 3});
EXPECT_EQ("a", d1.min());
EXPECT_EQ("b", d1.max());
EXPECT_EQ(std::make_pair(1, 2), d2.min());
EXPECT_EQ(std::make_pair(4, 3), d2.max());
}
struct NoEquals {
NoEquals(int v) : value(v) {} // NOLINT
int value;
bool operator<(const NoEquals& other) const { return value < other.value; }
};
TEST_F(IntervalTest, OrderedComparisonForTypeWithoutEquals) {
const QuicInterval<NoEquals> d1(0, 4);
const QuicInterval<NoEquals> d2(0, 3);
const QuicInterval<NoEquals> d3(1, 4);
const QuicInterval<NoEquals> d4(1, 5);
const QuicInterval<NoEquals> d6(0, 4);
EXPECT_TRUE(d1 < d2);
EXPECT_TRUE(d1 < d3);
EXPECT_TRUE(d1 < d4);
EXPECT_FALSE(d1 < d6);
}
TEST_F(IntervalTest, OutputReturnsOstreamRef) {
std::stringstream ss;
const QuicInterval<int> v(1, 2);
// If (ss << v) were to return a value, it wouldn't match the signature of
// return_type_is_a_ref() function.
auto return_type_is_a_ref = [](std::ostream&) {};
return_type_is_a_ref(ss << v);
}
struct NotOstreamable {
bool operator<(const NotOstreamable& other) const { return false; }
bool operator>=(const NotOstreamable& other) const { return true; }
bool operator==(const NotOstreamable& other) const { return true; }
};
TEST_F(IntervalTest, IntervalOfTypeWithNoOstreamSupport) {
const NotOstreamable v;
const QuicInterval<NotOstreamable> d(v, v);
// EXPECT_EQ builds a string representation of d. If d::operator<<() would be
// defined then this test would not compile because NotOstreamable objects
// lack the operator<<() support.
EXPECT_EQ(d, d);
}
} // namespace
} // namespace test
} // namespace quic