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| //===- llvm/unittest/ADT/FoldingSetTest.cpp -------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// FoldingSet unit tests.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/FoldingSet.h"
#include "gtest/gtest.h"
#include <string>
using namespace llvm;
namespace {
// Unaligned string test.
TEST(FoldingSetTest, UnalignedStringTest) {
SCOPED_TRACE("UnalignedStringTest");
FoldingSetNodeID a, b;
// An aligned string.
std::string str1= "a test string";
a.AddString(str1);
// An unaligned string.
std::string str2 = ">" + str1;
b.AddString(str2.c_str() + 1);
EXPECT_EQ(a.ComputeHash(), b.ComputeHash());
}
TEST(FoldingSetTest, LongLongComparison) {
struct LongLongContainer : FoldingSetNode {
unsigned long long A, B;
LongLongContainer(unsigned long long A, unsigned long long B)
: A(A), B(B) {}
void Profile(FoldingSetNodeID &ID) const {
ID.AddInteger(A);
ID.AddInteger(B);
}
};
LongLongContainer C1((1ULL << 32) + 1, 1ULL);
LongLongContainer C2(1ULL, (1ULL << 32) + 1);
FoldingSet<LongLongContainer> Set;
EXPECT_EQ(&C1, Set.GetOrInsertNode(&C1));
EXPECT_EQ(&C2, Set.GetOrInsertNode(&C2));
EXPECT_EQ(2U, Set.size());
}
struct TrivialPair : public FoldingSetNode {
unsigned Key = 0;
unsigned Value = 0;
TrivialPair(unsigned K, unsigned V) : FoldingSetNode(), Key(K), Value(V) {}
void Profile(FoldingSetNodeID &ID) const {
ID.AddInteger(Key);
ID.AddInteger(Value);
}
};
TEST(FoldingSetTest, IDComparison) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
Trivial.InsertNode(&T);
void *InsertPos = nullptr;
FoldingSetNodeID ID;
T.Profile(ID);
TrivialPair *N = Trivial.FindNodeOrInsertPos(ID, InsertPos);
EXPECT_EQ(&T, N);
EXPECT_EQ(nullptr, InsertPos);
}
TEST(FoldingSetTest, MissedIDComparison) {
FoldingSet<TrivialPair> Trivial;
TrivialPair S(100, 42);
TrivialPair T(99, 42);
Trivial.InsertNode(&T);
void *InsertPos = nullptr;
FoldingSetNodeID ID;
S.Profile(ID);
TrivialPair *N = Trivial.FindNodeOrInsertPos(ID, InsertPos);
EXPECT_EQ(nullptr, N);
EXPECT_NE(nullptr, InsertPos);
}
TEST(FoldingSetTest, RemoveNodeThatIsPresent) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
Trivial.InsertNode(&T);
EXPECT_EQ(Trivial.size(), 1U);
bool WasThere = Trivial.RemoveNode(&T);
EXPECT_TRUE(WasThere);
EXPECT_EQ(0U, Trivial.size());
}
TEST(FoldingSetTest, RemoveNodeThatIsAbsent) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
bool WasThere = Trivial.RemoveNode(&T);
EXPECT_FALSE(WasThere);
EXPECT_EQ(0U, Trivial.size());
}
TEST(FoldingSetTest, GetOrInsertInserting) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
TrivialPair *N = Trivial.GetOrInsertNode(&T);
EXPECT_EQ(&T, N);
}
TEST(FoldingSetTest, GetOrInsertGetting) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
TrivialPair T2(99, 42);
Trivial.InsertNode(&T);
TrivialPair *N = Trivial.GetOrInsertNode(&T2);
EXPECT_EQ(&T, N);
}
TEST(FoldingSetTest, InsertAtPos) {
FoldingSet<TrivialPair> Trivial;
void *InsertPos = nullptr;
TrivialPair Finder(99, 42);
FoldingSetNodeID ID;
Finder.Profile(ID);
Trivial.FindNodeOrInsertPos(ID, InsertPos);
TrivialPair T(99, 42);
Trivial.InsertNode(&T, InsertPos);
EXPECT_EQ(1U, Trivial.size());
}
TEST(FoldingSetTest, EmptyIsTrue) {
FoldingSet<TrivialPair> Trivial;
EXPECT_TRUE(Trivial.empty());
}
TEST(FoldingSetTest, EmptyIsFalse) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
Trivial.InsertNode(&T);
EXPECT_FALSE(Trivial.empty());
}
TEST(FoldingSetTest, ClearOnEmpty) {
FoldingSet<TrivialPair> Trivial;
Trivial.clear();
EXPECT_TRUE(Trivial.empty());
}
TEST(FoldingSetTest, ClearOnNonEmpty) {
FoldingSet<TrivialPair> Trivial;
TrivialPair T(99, 42);
Trivial.InsertNode(&T);
Trivial.clear();
EXPECT_TRUE(Trivial.empty());
}
TEST(FoldingSetTest, CapacityLargerThanReserve) {
FoldingSet<TrivialPair> Trivial;
auto OldCapacity = Trivial.capacity();
Trivial.reserve(OldCapacity + 1);
EXPECT_GE(Trivial.capacity(), OldCapacity + 1);
}
TEST(FoldingSetTest, SmallReserveChangesNothing) {
FoldingSet<TrivialPair> Trivial;
auto OldCapacity = Trivial.capacity();
Trivial.reserve(OldCapacity - 1);
EXPECT_EQ(Trivial.capacity(), OldCapacity);
}
}
|