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llvm-mirror/unittests/ADT/IntervalMapTest.cpp
Vedant Kumar dfa1bc247b [ADT] Add CoalescingBitVector, implemented using IntervalMap [1/3] 
Add CoalescingBitVector to ADT. This is part 1 of a 3-part series to
address a compile-time explosion issue in LiveDebugValues.

---

CoalescingBitVector is a bitvector that, under the hood, relies on an
IntervalMap to coalesce elements into intervals.

CoalescingBitVector efficiently represents sets which predominantly
contain contiguous ranges (e.g.  the VarLocSets in LiveDebugValues,
which are very long sequences that look like {1, 2, 3, ...}). OTOH,
CoalescingBitVector isn't good at representing sets with lots of gaps
between elements. The first N coalesced intervals of set bits are stored
in-place (in the initial heap allocation).

Compared to SparseBitVector, CoalescingBitVector offers more predictable
performance for non-sequential find() operations. This provides a
crucial speedup in LiveDebugValues.

Differential Revision: https://reviews.llvm.org/D74984
2020-02-27 12:39:46 -08:00

817 lines
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//===---- ADT/IntervalMapTest.cpp - IntervalMap unit tests ------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/IntervalMap.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
typedef IntervalMap<unsigned, unsigned, 4> UUMap;
typedef IntervalMap<unsigned, unsigned, 4,
IntervalMapHalfOpenInfo<unsigned>> UUHalfOpenMap;
// Empty map tests
TEST(IntervalMapTest, EmptyMap) {
UUMap::Allocator allocator;
UUMap map(allocator);
EXPECT_TRUE(map.empty());
// Lookup on empty map.
EXPECT_EQ(0u, map.lookup(0));
EXPECT_EQ(7u, map.lookup(0, 7));
EXPECT_EQ(0u, map.lookup(~0u-1));
EXPECT_EQ(7u, map.lookup(~0u-1, 7));
// Iterators.
EXPECT_TRUE(map.begin() == map.begin());
EXPECT_TRUE(map.begin() == map.end());
EXPECT_TRUE(map.end() == map.end());
EXPECT_FALSE(map.begin() != map.begin());
EXPECT_FALSE(map.begin() != map.end());
EXPECT_FALSE(map.end() != map.end());
EXPECT_FALSE(map.begin().valid());
EXPECT_FALSE(map.end().valid());
UUMap::iterator I = map.begin();
EXPECT_FALSE(I.valid());
EXPECT_TRUE(I == map.end());
// Default constructor and cross-constness compares.
UUMap::const_iterator CI;
CI = map.begin();
EXPECT_TRUE(CI == I);
UUMap::iterator I2;
I2 = map.end();
EXPECT_TRUE(I2 == CI);
}
// Test one-element closed ranges.
TEST(IntervalMapTest, OneElementRanges) {
UUMap::Allocator allocator;
UUMap map(allocator);
map.insert(1, 1, 1);
map.insert(2, 2, 2);
EXPECT_EQ(1u, map.lookup(1));
EXPECT_EQ(2u, map.lookup(2));
}
// Single entry map tests
TEST(IntervalMapTest, SingleEntryMap) {
UUMap::Allocator allocator;
UUMap map(allocator);
map.insert(100, 150, 1);
EXPECT_FALSE(map.empty());
// Lookup around interval.
EXPECT_EQ(0u, map.lookup(0));
EXPECT_EQ(0u, map.lookup(99));
EXPECT_EQ(1u, map.lookup(100));
EXPECT_EQ(1u, map.lookup(101));
EXPECT_EQ(1u, map.lookup(125));
EXPECT_EQ(1u, map.lookup(149));
EXPECT_EQ(1u, map.lookup(150));
EXPECT_EQ(0u, map.lookup(151));
EXPECT_EQ(0u, map.lookup(200));
EXPECT_EQ(0u, map.lookup(~0u-1));
// Iterators.
EXPECT_TRUE(map.begin() == map.begin());
EXPECT_FALSE(map.begin() == map.end());
EXPECT_TRUE(map.end() == map.end());
EXPECT_TRUE(map.begin().valid());
EXPECT_FALSE(map.end().valid());
// Iter deref.
UUMap::iterator I = map.begin();
ASSERT_TRUE(I.valid());
EXPECT_EQ(100u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(1u, I.value());
// Preincrement.
++I;
EXPECT_FALSE(I.valid());
EXPECT_FALSE(I == map.begin());
EXPECT_TRUE(I == map.end());
// PreDecrement.
--I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(100u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(1u, I.value());
EXPECT_TRUE(I == map.begin());
EXPECT_FALSE(I == map.end());
// Change the value.
I.setValue(2);
ASSERT_TRUE(I.valid());
EXPECT_EQ(100u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(2u, I.value());
// Grow the bounds.
I.setStart(0);
ASSERT_TRUE(I.valid());
EXPECT_EQ(0u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(2u, I.value());
I.setStop(200);
ASSERT_TRUE(I.valid());
EXPECT_EQ(0u, I.start());
EXPECT_EQ(200u, I.stop());
EXPECT_EQ(2u, I.value());
// Shrink the bounds.
I.setStart(150);
ASSERT_TRUE(I.valid());
EXPECT_EQ(150u, I.start());
EXPECT_EQ(200u, I.stop());
EXPECT_EQ(2u, I.value());
// Shrink the interval to have a length of 1
I.setStop(150);
ASSERT_TRUE(I.valid());
EXPECT_EQ(150u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(2u, I.value());
I.setStop(160);
ASSERT_TRUE(I.valid());
EXPECT_EQ(150u, I.start());
EXPECT_EQ(160u, I.stop());
EXPECT_EQ(2u, I.value());
// Shrink the interval to have a length of 1
I.setStart(160);
ASSERT_TRUE(I.valid());
EXPECT_EQ(160u, I.start());
EXPECT_EQ(160u, I.stop());
EXPECT_EQ(2u, I.value());
// Erase last elem.
I.erase();
EXPECT_TRUE(map.empty());
EXPECT_EQ(0, std::distance(map.begin(), map.end()));
}
// Single entry half-open map tests
TEST(IntervalMapTest, SingleEntryHalfOpenMap) {
UUHalfOpenMap::Allocator allocator;
UUHalfOpenMap map(allocator);
map.insert(100, 150, 1);
EXPECT_FALSE(map.empty());
UUHalfOpenMap::iterator I = map.begin();
ASSERT_TRUE(I.valid());
// Shrink the interval to have a length of 1
I.setStart(149);
ASSERT_TRUE(I.valid());
EXPECT_EQ(149u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(1u, I.value());
I.setStop(160);
ASSERT_TRUE(I.valid());
EXPECT_EQ(149u, I.start());
EXPECT_EQ(160u, I.stop());
EXPECT_EQ(1u, I.value());
// Shrink the interval to have a length of 1
I.setStop(150);
ASSERT_TRUE(I.valid());
EXPECT_EQ(149u, I.start());
EXPECT_EQ(150u, I.stop());
EXPECT_EQ(1u, I.value());
}
// Flat coalescing tests.
TEST(IntervalMapTest, RootCoalescing) {
UUMap::Allocator allocator;
UUMap map(allocator);
map.insert(100, 150, 1);
// Coalesce from the left.
map.insert(90, 99, 1);
EXPECT_EQ(1, std::distance(map.begin(), map.end()));
EXPECT_EQ(90u, map.start());
EXPECT_EQ(150u, map.stop());
// Coalesce from the right.
map.insert(151, 200, 1);
EXPECT_EQ(1, std::distance(map.begin(), map.end()));
EXPECT_EQ(90u, map.start());
EXPECT_EQ(200u, map.stop());
// Non-coalesce from the left.
map.insert(60, 89, 2);
EXPECT_EQ(2, std::distance(map.begin(), map.end()));
EXPECT_EQ(60u, map.start());
EXPECT_EQ(200u, map.stop());
EXPECT_EQ(2u, map.lookup(89));
EXPECT_EQ(1u, map.lookup(90));
UUMap::iterator I = map.begin();
EXPECT_EQ(60u, I.start());
EXPECT_EQ(89u, I.stop());
EXPECT_EQ(2u, I.value());
++I;
EXPECT_EQ(90u, I.start());
EXPECT_EQ(200u, I.stop());
EXPECT_EQ(1u, I.value());
++I;
EXPECT_FALSE(I.valid());
// Non-coalesce from the right.
map.insert(201, 210, 2);
EXPECT_EQ(3, std::distance(map.begin(), map.end()));
EXPECT_EQ(60u, map.start());
EXPECT_EQ(210u, map.stop());
EXPECT_EQ(2u, map.lookup(201));
EXPECT_EQ(1u, map.lookup(200));
// Erase from the left.
map.begin().erase();
EXPECT_EQ(2, std::distance(map.begin(), map.end()));
EXPECT_EQ(90u, map.start());
EXPECT_EQ(210u, map.stop());
// Erase from the right.
(--map.end()).erase();
EXPECT_EQ(1, std::distance(map.begin(), map.end()));
EXPECT_EQ(90u, map.start());
EXPECT_EQ(200u, map.stop());
// Add non-coalescing, then trigger coalescing with setValue.
map.insert(80, 89, 2);
map.insert(201, 210, 2);
EXPECT_EQ(3, std::distance(map.begin(), map.end()));
(++map.begin()).setValue(2);
EXPECT_EQ(1, std::distance(map.begin(), map.end()));
I = map.begin();
ASSERT_TRUE(I.valid());
EXPECT_EQ(80u, I.start());
EXPECT_EQ(210u, I.stop());
EXPECT_EQ(2u, I.value());
}
// Flat multi-coalescing tests.
TEST(IntervalMapTest, RootMultiCoalescing) {
UUMap::Allocator allocator;
UUMap map(allocator);
map.insert(140, 150, 1);
map.insert(160, 170, 1);
map.insert(100, 110, 1);
map.insert(120, 130, 1);
EXPECT_EQ(4, std::distance(map.begin(), map.end()));
EXPECT_EQ(100u, map.start());
EXPECT_EQ(170u, map.stop());
// Verify inserts.
UUMap::iterator I = map.begin();
EXPECT_EQ(100u, I.start());
EXPECT_EQ(110u, I.stop());
++I;
EXPECT_EQ(120u, I.start());
EXPECT_EQ(130u, I.stop());
++I;
EXPECT_EQ(140u, I.start());
EXPECT_EQ(150u, I.stop());
++I;
EXPECT_EQ(160u, I.start());
EXPECT_EQ(170u, I.stop());
++I;
EXPECT_FALSE(I.valid());
// Test advanceTo on flat tree.
I = map.begin();
I.advanceTo(135);
ASSERT_TRUE(I.valid());
EXPECT_EQ(140u, I.start());
EXPECT_EQ(150u, I.stop());
I.advanceTo(145);
ASSERT_TRUE(I.valid());
EXPECT_EQ(140u, I.start());
EXPECT_EQ(150u, I.stop());
I.advanceTo(200);
EXPECT_FALSE(I.valid());
I.advanceTo(300);
EXPECT_FALSE(I.valid());
// Coalesce left with followers.
// [100;110] [120;130] [140;150] [160;170]
map.insert(111, 115, 1);
I = map.begin();
ASSERT_TRUE(I.valid());
EXPECT_EQ(100u, I.start());
EXPECT_EQ(115u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(120u, I.start());
EXPECT_EQ(130u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(140u, I.start());
EXPECT_EQ(150u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(160u, I.start());
EXPECT_EQ(170u, I.stop());
++I;
EXPECT_FALSE(I.valid());
// Coalesce right with followers.
// [100;115] [120;130] [140;150] [160;170]
map.insert(135, 139, 1);
I = map.begin();
ASSERT_TRUE(I.valid());
EXPECT_EQ(100u, I.start());
EXPECT_EQ(115u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(120u, I.start());
EXPECT_EQ(130u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(135u, I.start());
EXPECT_EQ(150u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(160u, I.start());
EXPECT_EQ(170u, I.stop());
++I;
EXPECT_FALSE(I.valid());
// Coalesce left and right with followers.
// [100;115] [120;130] [135;150] [160;170]
map.insert(131, 134, 1);
I = map.begin();
ASSERT_TRUE(I.valid());
EXPECT_EQ(100u, I.start());
EXPECT_EQ(115u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(120u, I.start());
EXPECT_EQ(150u, I.stop());
++I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(160u, I.start());
EXPECT_EQ(170u, I.stop());
++I;
EXPECT_FALSE(I.valid());
// Test clear() on non-branched map.
map.clear();
EXPECT_TRUE(map.empty());
EXPECT_TRUE(map.begin() == map.end());
}
// Branched, non-coalescing tests.
TEST(IntervalMapTest, Branched) {
UUMap::Allocator allocator;
UUMap map(allocator);
// Insert enough intervals to force a branched tree.
// This creates 9 leaf nodes with 11 elements each, tree height = 1.
for (unsigned i = 1; i < 100; ++i) {
map.insert(10*i, 10*i+5, i);
EXPECT_EQ(10u, map.start());
EXPECT_EQ(10*i+5, map.stop());
}
// Tree limits.
EXPECT_FALSE(map.empty());
EXPECT_EQ(10u, map.start());
EXPECT_EQ(995u, map.stop());
// Tree lookup.
for (unsigned i = 1; i < 100; ++i) {
EXPECT_EQ(0u, map.lookup(10*i-1));
EXPECT_EQ(i, map.lookup(10*i));
EXPECT_EQ(i, map.lookup(10*i+5));
EXPECT_EQ(0u, map.lookup(10*i+6));
}
// Forward iteration.
UUMap::iterator I = map.begin();
for (unsigned i = 1; i < 100; ++i) {
ASSERT_TRUE(I.valid());
EXPECT_EQ(10*i, I.start());
EXPECT_EQ(10*i+5, I.stop());
EXPECT_EQ(i, *I);
++I;
}
EXPECT_FALSE(I.valid());
EXPECT_TRUE(I == map.end());
// Backwards iteration.
for (unsigned i = 99; i; --i) {
--I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(10*i, I.start());
EXPECT_EQ(10*i+5, I.stop());
EXPECT_EQ(i, *I);
}
EXPECT_TRUE(I == map.begin());
// Test advanceTo in same node.
I.advanceTo(20);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(25u, I.stop());
// Change value, no coalescing.
I.setValue(0);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(25u, I.stop());
EXPECT_EQ(0u, I.value());
// Close the gap right, no coalescing.
I.setStop(29);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(29u, I.stop());
EXPECT_EQ(0u, I.value());
// Change value, no coalescing.
I.setValue(2);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(29u, I.stop());
EXPECT_EQ(2u, I.value());
// Change value, now coalescing.
I.setValue(3);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(35u, I.stop());
EXPECT_EQ(3u, I.value());
// Close the gap, now coalescing.
I.setValue(4);
ASSERT_TRUE(I.valid());
I.setStop(39);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(45u, I.stop());
EXPECT_EQ(4u, I.value());
// advanceTo another node.
I.advanceTo(200);
ASSERT_TRUE(I.valid());
EXPECT_EQ(200u, I.start());
EXPECT_EQ(205u, I.stop());
// Close the gap left, no coalescing.
I.setStart(196);
ASSERT_TRUE(I.valid());
EXPECT_EQ(196u, I.start());
EXPECT_EQ(205u, I.stop());
EXPECT_EQ(20u, I.value());
// Change value, no coalescing.
I.setValue(0);
ASSERT_TRUE(I.valid());
EXPECT_EQ(196u, I.start());
EXPECT_EQ(205u, I.stop());
EXPECT_EQ(0u, I.value());
// Change value, now coalescing.
I.setValue(19);
ASSERT_TRUE(I.valid());
EXPECT_EQ(190u, I.start());
EXPECT_EQ(205u, I.stop());
EXPECT_EQ(19u, I.value());
// Close the gap, now coalescing.
I.setValue(18);
ASSERT_TRUE(I.valid());
I.setStart(186);
ASSERT_TRUE(I.valid());
EXPECT_EQ(180u, I.start());
EXPECT_EQ(205u, I.stop());
EXPECT_EQ(18u, I.value());
// Erase from the front.
I = map.begin();
for (unsigned i = 0; i != 20; ++i) {
I.erase();
EXPECT_TRUE(I == map.begin());
EXPECT_FALSE(map.empty());
EXPECT_EQ(I.start(), map.start());
EXPECT_EQ(995u, map.stop());
}
// Test clear() on branched map.
map.clear();
EXPECT_TRUE(map.empty());
EXPECT_TRUE(map.begin() == map.end());
}
// Branched, high, non-coalescing tests.
TEST(IntervalMapTest, Branched2) {
UUMap::Allocator allocator;
UUMap map(allocator);
// Insert enough intervals to force a height >= 2 tree.
for (unsigned i = 1; i < 1000; ++i)
map.insert(10*i, 10*i+5, i);
// Tree limits.
EXPECT_FALSE(map.empty());
EXPECT_EQ(10u, map.start());
EXPECT_EQ(9995u, map.stop());
// Tree lookup.
for (unsigned i = 1; i < 1000; ++i) {
EXPECT_EQ(0u, map.lookup(10*i-1));
EXPECT_EQ(i, map.lookup(10*i));
EXPECT_EQ(i, map.lookup(10*i+5));
EXPECT_EQ(0u, map.lookup(10*i+6));
}
// Forward iteration.
UUMap::iterator I = map.begin();
for (unsigned i = 1; i < 1000; ++i) {
ASSERT_TRUE(I.valid());
EXPECT_EQ(10*i, I.start());
EXPECT_EQ(10*i+5, I.stop());
EXPECT_EQ(i, *I);
++I;
}
EXPECT_FALSE(I.valid());
EXPECT_TRUE(I == map.end());
// Backwards iteration.
for (unsigned i = 999; i; --i) {
--I;
ASSERT_TRUE(I.valid());
EXPECT_EQ(10*i, I.start());
EXPECT_EQ(10*i+5, I.stop());
EXPECT_EQ(i, *I);
}
EXPECT_TRUE(I == map.begin());
// Test advanceTo in same node.
I.advanceTo(20);
ASSERT_TRUE(I.valid());
EXPECT_EQ(20u, I.start());
EXPECT_EQ(25u, I.stop());
// advanceTo sibling leaf node.
I.advanceTo(200);
ASSERT_TRUE(I.valid());
EXPECT_EQ(200u, I.start());
EXPECT_EQ(205u, I.stop());
// advanceTo further.
I.advanceTo(2000);
ASSERT_TRUE(I.valid());
EXPECT_EQ(2000u, I.start());
EXPECT_EQ(2005u, I.stop());
// advanceTo beyond end()
I.advanceTo(20000);
EXPECT_FALSE(I.valid());
// end().advanceTo() is valid as long as x > map.stop()
I.advanceTo(30000);
EXPECT_FALSE(I.valid());
// Test clear() on branched map.
map.clear();
EXPECT_TRUE(map.empty());
EXPECT_TRUE(map.begin() == map.end());
}
// Random insertions, coalescing to a single interval.
TEST(IntervalMapTest, RandomCoalescing) {
UUMap::Allocator allocator;
UUMap map(allocator);
// This is a poor PRNG with maximal period:
// x_n = 5 x_{n-1} + 1 mod 2^N
unsigned x = 100;
for (unsigned i = 0; i != 4096; ++i) {
map.insert(10*x, 10*x+9, 1);
EXPECT_GE(10*x, map.start());
EXPECT_LE(10*x+9, map.stop());
x = (5*x+1)%4096;
}
// Map should be fully coalesced after that exercise.
EXPECT_FALSE(map.empty());
EXPECT_EQ(0u, map.start());
EXPECT_EQ(40959u, map.stop());
EXPECT_EQ(1, std::distance(map.begin(), map.end()));
}
TEST(IntervalMapTest, Overlaps) {
UUMap::Allocator allocator;
UUMap map(allocator);
map.insert(10, 20, 0);
map.insert(30, 40, 0);
map.insert(50, 60, 0);
EXPECT_FALSE(map.overlaps(0, 9));
EXPECT_TRUE(map.overlaps(0, 10));
EXPECT_TRUE(map.overlaps(0, 15));
EXPECT_TRUE(map.overlaps(0, 25));
EXPECT_TRUE(map.overlaps(0, 45));
EXPECT_TRUE(map.overlaps(10, 45));
EXPECT_TRUE(map.overlaps(30, 45));
EXPECT_TRUE(map.overlaps(35, 36));
EXPECT_TRUE(map.overlaps(40, 45));
EXPECT_FALSE(map.overlaps(45, 45));
EXPECT_TRUE(map.overlaps(60, 60));
EXPECT_TRUE(map.overlaps(60, 66));
EXPECT_FALSE(map.overlaps(66, 66));
}
TEST(IntervalMapTest, OverlapsHalfOpen) {
UUHalfOpenMap::Allocator allocator;
UUHalfOpenMap map(allocator);
map.insert(10, 20, 0);
map.insert(30, 40, 0);
map.insert(50, 60, 0);
EXPECT_FALSE(map.overlaps(0, 9));
EXPECT_FALSE(map.overlaps(0, 10));
EXPECT_TRUE(map.overlaps(0, 15));
EXPECT_TRUE(map.overlaps(0, 25));
EXPECT_TRUE(map.overlaps(0, 45));
EXPECT_TRUE(map.overlaps(10, 45));
EXPECT_TRUE(map.overlaps(30, 45));
EXPECT_TRUE(map.overlaps(35, 36));
EXPECT_FALSE(map.overlaps(40, 45));
EXPECT_FALSE(map.overlaps(45, 46));
EXPECT_FALSE(map.overlaps(60, 61));
EXPECT_FALSE(map.overlaps(60, 66));
EXPECT_FALSE(map.overlaps(66, 67));
}
TEST(IntervalMapOverlapsTest, SmallMaps) {
typedef IntervalMapOverlaps<UUMap,UUMap> UUOverlaps;
UUMap::Allocator allocator;
UUMap mapA(allocator);
UUMap mapB(allocator);
// empty, empty.
EXPECT_FALSE(UUOverlaps(mapA, mapB).valid());
mapA.insert(1, 2, 3);
// full, empty
EXPECT_FALSE(UUOverlaps(mapA, mapB).valid());
// empty, full
EXPECT_FALSE(UUOverlaps(mapB, mapA).valid());
mapB.insert(3, 4, 5);
// full, full, non-overlapping
EXPECT_FALSE(UUOverlaps(mapA, mapB).valid());
EXPECT_FALSE(UUOverlaps(mapB, mapA).valid());
// Add an overlapping segment.
mapA.insert(4, 5, 6);
UUOverlaps AB(mapA, mapB);
ASSERT_TRUE(AB.valid());
EXPECT_EQ(4u, AB.a().start());
EXPECT_EQ(3u, AB.b().start());
++AB;
EXPECT_FALSE(AB.valid());
UUOverlaps BA(mapB, mapA);
ASSERT_TRUE(BA.valid());
EXPECT_EQ(3u, BA.a().start());
EXPECT_EQ(4u, BA.b().start());
// advance past end.
BA.advanceTo(6);
EXPECT_FALSE(BA.valid());
// advance an invalid iterator.
BA.advanceTo(7);
EXPECT_FALSE(BA.valid());
}
TEST(IntervalMapOverlapsTest, BigMaps) {
typedef IntervalMapOverlaps<UUMap,UUMap> UUOverlaps;
UUMap::Allocator allocator;
UUMap mapA(allocator);
UUMap mapB(allocator);
// [0;4] [10;14] [20;24] ...
for (unsigned n = 0; n != 100; ++n)
mapA.insert(10*n, 10*n+4, n);
// [5;6] [15;16] [25;26] ...
for (unsigned n = 10; n != 20; ++n)
mapB.insert(10*n+5, 10*n+6, n);
// [208;209] [218;219] ...
for (unsigned n = 20; n != 30; ++n)
mapB.insert(10*n+8, 10*n+9, n);
// insert some overlapping segments.
mapB.insert(400, 400, 400);
mapB.insert(401, 401, 401);
mapB.insert(402, 500, 402);
mapB.insert(600, 601, 402);
UUOverlaps AB(mapA, mapB);
ASSERT_TRUE(AB.valid());
EXPECT_EQ(400u, AB.a().start());
EXPECT_EQ(400u, AB.b().start());
++AB;
ASSERT_TRUE(AB.valid());
EXPECT_EQ(400u, AB.a().start());
EXPECT_EQ(401u, AB.b().start());
++AB;
ASSERT_TRUE(AB.valid());
EXPECT_EQ(400u, AB.a().start());
EXPECT_EQ(402u, AB.b().start());
++AB;
ASSERT_TRUE(AB.valid());
EXPECT_EQ(410u, AB.a().start());
EXPECT_EQ(402u, AB.b().start());
++AB;
ASSERT_TRUE(AB.valid());
EXPECT_EQ(420u, AB.a().start());
EXPECT_EQ(402u, AB.b().start());
AB.skipB();
ASSERT_TRUE(AB.valid());
EXPECT_EQ(600u, AB.a().start());
EXPECT_EQ(600u, AB.b().start());
++AB;
EXPECT_FALSE(AB.valid());
// Test advanceTo.
UUOverlaps AB2(mapA, mapB);
AB2.advanceTo(410);
ASSERT_TRUE(AB2.valid());
EXPECT_EQ(410u, AB2.a().start());
EXPECT_EQ(402u, AB2.b().start());
// It is valid to advanceTo with any monotonic sequence.
AB2.advanceTo(411);
ASSERT_TRUE(AB2.valid());
EXPECT_EQ(410u, AB2.a().start());
EXPECT_EQ(402u, AB2.b().start());
// Check reversed maps.
UUOverlaps BA(mapB, mapA);
ASSERT_TRUE(BA.valid());
EXPECT_EQ(400u, BA.b().start());
EXPECT_EQ(400u, BA.a().start());
++BA;
ASSERT_TRUE(BA.valid());
EXPECT_EQ(400u, BA.b().start());
EXPECT_EQ(401u, BA.a().start());
++BA;
ASSERT_TRUE(BA.valid());
EXPECT_EQ(400u, BA.b().start());
EXPECT_EQ(402u, BA.a().start());
++BA;
ASSERT_TRUE(BA.valid());
EXPECT_EQ(410u, BA.b().start());
EXPECT_EQ(402u, BA.a().start());
++BA;
ASSERT_TRUE(BA.valid());
EXPECT_EQ(420u, BA.b().start());
EXPECT_EQ(402u, BA.a().start());
BA.skipA();
ASSERT_TRUE(BA.valid());
EXPECT_EQ(600u, BA.b().start());
EXPECT_EQ(600u, BA.a().start());
++BA;
EXPECT_FALSE(BA.valid());
// Test advanceTo.
UUOverlaps BA2(mapB, mapA);
BA2.advanceTo(410);
ASSERT_TRUE(BA2.valid());
EXPECT_EQ(410u, BA2.b().start());
EXPECT_EQ(402u, BA2.a().start());
BA2.advanceTo(411);
ASSERT_TRUE(BA2.valid());
EXPECT_EQ(410u, BA2.b().start());
EXPECT_EQ(402u, BA2.a().start());
}
} // namespace
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