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//===------ ADT/SparseSetTest.cpp - SparseSet 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/SparseMultiSet.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
typedef SparseMultiSet<unsigned> USet;
// Empty set tests.
TEST(SparseMultiSetTest, EmptySet) {
USet Set;
EXPECT_TRUE(Set.empty());
EXPECT_EQ(0u, Set.size());
Set.setUniverse(10);
// Lookups on empty set.
EXPECT_TRUE(Set.find(0) == Set.end());
EXPECT_TRUE(Set.find(9) == Set.end());
// Same thing on a const reference.
const USet &CSet = Set;
EXPECT_TRUE(CSet.empty());
EXPECT_EQ(0u, CSet.size());
EXPECT_TRUE(CSet.find(0) == CSet.end());
USet::const_iterator I = CSet.find(5);
EXPECT_TRUE(I == CSet.end());
}
// Single entry set tests.
TEST(SparseMultiSetTest, SingleEntrySet) {
USet Set;
Set.setUniverse(10);
USet::iterator I = Set.insert(5);
EXPECT_TRUE(I != Set.end());
EXPECT_TRUE(*I == 5);
EXPECT_FALSE(Set.empty());
EXPECT_EQ(1u, Set.size());
EXPECT_TRUE(Set.find(0) == Set.end());
EXPECT_TRUE(Set.find(9) == Set.end());
EXPECT_FALSE(Set.contains(0));
EXPECT_TRUE(Set.contains(5));
// Extra insert.
I = Set.insert(5);
EXPECT_TRUE(I != Set.end());
EXPECT_TRUE(I == ++Set.find(5));
I--;
EXPECT_TRUE(I == Set.find(5));
// Erase non-existent element.
I = Set.find(1);
EXPECT_TRUE(I == Set.end());
EXPECT_EQ(2u, Set.size());
EXPECT_EQ(5u, *Set.find(5));
// Erase iterator.
I = Set.find(5);
EXPECT_TRUE(I != Set.end());
I = Set.erase(I);
EXPECT_TRUE(I != Set.end());
I = Set.erase(I);
EXPECT_TRUE(I == Set.end());
EXPECT_TRUE(Set.empty());
}
// Multiple entry set tests.
TEST(SparseMultiSetTest, MultipleEntrySet) {
USet Set;
Set.setUniverse(10);
Set.insert(5);
Set.insert(5);
Set.insert(5);
Set.insert(3);
Set.insert(2);
Set.insert(1);
Set.insert(4);
EXPECT_EQ(7u, Set.size());
// Erase last element by key.
EXPECT_TRUE(Set.erase(Set.find(4)) == Set.end());
EXPECT_EQ(6u, Set.size());
EXPECT_FALSE(Set.contains(4));
EXPECT_TRUE(Set.find(4) == Set.end());
// Erase first element by key.
EXPECT_EQ(3u, Set.count(5));
EXPECT_TRUE(Set.find(5) != Set.end());
EXPECT_TRUE(Set.erase(Set.find(5)) != Set.end());
EXPECT_EQ(5u, Set.size());
EXPECT_EQ(2u, Set.count(5));
Set.insert(6);
Set.insert(7);
EXPECT_EQ(7u, Set.size());
// Erase tail by iterator.
EXPECT_TRUE(Set.getTail(6) == Set.getHead(6));
USet::iterator I = Set.erase(Set.find(6));
EXPECT_TRUE(I == Set.end());
EXPECT_EQ(6u, Set.size());
// Erase tails by iterator.
EXPECT_EQ(2u, Set.count(5));
I = Set.getTail(5);
I = Set.erase(I);
EXPECT_TRUE(I == Set.end());
--I;
EXPECT_EQ(1u, Set.count(5));
EXPECT_EQ(5u, *I);
I = Set.erase(I);
EXPECT_TRUE(I == Set.end());
EXPECT_EQ(0u, Set.count(5));
Set.insert(8);
Set.insert(8);
Set.insert(8);
Set.insert(8);
Set.insert(8);
// Erase all the 8s
EXPECT_EQ(5, std::distance(Set.getHead(8), Set.end()));
Set.eraseAll(8);
EXPECT_EQ(0, std::distance(Set.getHead(8), Set.end()));
// Clear and resize the universe.
Set.clear();
EXPECT_EQ(0u, Set.size());
EXPECT_FALSE(Set.contains(3));
Set.setUniverse(1000);
// Add more than 256 elements.
for (unsigned i = 100; i != 800; ++i)
Set.insert(i);
for (unsigned i = 0; i != 10; ++i)
Set.eraseAll(i);
for (unsigned i = 100; i != 800; ++i)
EXPECT_EQ(1u, Set.count(i));
EXPECT_FALSE(Set.contains(99));
EXPECT_FALSE(Set.contains(800));
EXPECT_EQ(700u, Set.size());
}
// Test out iterators
TEST(SparseMultiSetTest, Iterators) {
USet Set;
Set.setUniverse(100);
Set.insert(0);
Set.insert(1);
Set.insert(2);
Set.insert(0);
Set.insert(1);
Set.insert(0);
USet::RangePair RangePair = Set.equal_range(0);
USet::iterator B = RangePair.first;
USet::iterator E = RangePair.second;
// Move the iterators around, going to end and coming back.
EXPECT_EQ(3, std::distance(B, E));
EXPECT_EQ(B, --(--(--E)));
EXPECT_EQ(++(++(++E)), Set.end());
EXPECT_EQ(B, --(--(--E)));
EXPECT_EQ(++(++(++E)), Set.end());
// Insert into the tail, and move around again
Set.insert(0);
EXPECT_EQ(B, --(--(--(--E))));
EXPECT_EQ(++(++(++(++E))), Set.end());
EXPECT_EQ(B, --(--(--(--E))));
EXPECT_EQ(++(++(++(++E))), Set.end());
// Erase a tail, and move around again
USet::iterator Erased = Set.erase(Set.getTail(0));
EXPECT_EQ(Erased, E);
EXPECT_EQ(B, --(--(--E)));
USet Set2;
Set2.setUniverse(11);
Set2.insert(3);
EXPECT_TRUE(!Set2.contains(0));
EXPECT_TRUE(!Set.contains(3));
EXPECT_EQ(Set2.getHead(3), Set2.getTail(3));
EXPECT_EQ(Set2.getHead(0), Set2.getTail(0));
B = Set2.find(3);
EXPECT_EQ(Set2.find(3), --(++B));
}
struct Alt {
unsigned Value;
explicit Alt(unsigned x) : Value(x) {}
unsigned getSparseSetIndex() const { return Value - 1000; }
};
TEST(SparseMultiSetTest, AltStructSet) {
typedef SparseMultiSet<Alt> ASet;
ASet Set;
Set.setUniverse(10);
Set.insert(Alt(1005));
ASet::iterator I = Set.find(5);
ASSERT_TRUE(I != Set.end());
EXPECT_EQ(1005u, I->Value);
Set.insert(Alt(1006));
Set.insert(Alt(1006));
I = Set.erase(Set.find(6));
ASSERT_TRUE(I != Set.end());
EXPECT_EQ(1006u, I->Value);
I = Set.erase(Set.find(6));
ASSERT_TRUE(I == Set.end());
EXPECT_TRUE(Set.contains(5));
EXPECT_FALSE(Set.contains(6));
}
} // namespace
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