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llvm-mirror/unittests/ADT/TinyPtrVectorTest.cpp
George Burgess IV 9873867533 Ensure moved-from container is cleared on move 
In all cases except for this optimistic attempt to reuse memory, the
moved-from TinyPtrVector was left `empty()` at the end of this
assignment. Though using a container after it's been moved from can be a
bit sketchy, it's probably best to just be consistent here.

llvm-svn: 320408
2017-12-11 19:22:59 +00:00

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//===- llvm/unittest/ADT/TinyPtrVectorTest.cpp ----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// TinyPtrVector unit tests.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/TinyPtrVector.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/type_traits.h"
#include "gtest/gtest.h"
#include <algorithm>
#include <random>
#include <vector>
using namespace llvm;
namespace {
template <typename VectorT>
class TinyPtrVectorTest : public testing::Test {
protected:
typedef typename VectorT::value_type PtrT;
typedef typename std::remove_pointer<PtrT>::type ValueT;
VectorT V;
VectorT V2;
ValueT TestValues[1024];
std::vector<PtrT> TestPtrs;
TinyPtrVectorTest() {
for (size_t i = 0, e = array_lengthof(TestValues); i != e; ++i)
TestPtrs.push_back(&TestValues[i]);
std::shuffle(TestPtrs.begin(), TestPtrs.end(), std::mt19937{});
}
ArrayRef<PtrT> testArray(size_t N) {
return makeArrayRef(&TestPtrs[0], N);
}
void appendValues(VectorT &V, ArrayRef<PtrT> Values) {
for (size_t i = 0, e = Values.size(); i != e; ++i)
V.push_back(Values[i]);
}
void setVectors(ArrayRef<PtrT> Values1, ArrayRef<PtrT> Values2) {
V.clear();
appendValues(V, Values1);
V2.clear();
appendValues(V2, Values2);
}
void expectValues(const VectorT &V, ArrayRef<PtrT> Values) {
EXPECT_EQ(Values.empty(), V.empty());
EXPECT_EQ(Values.size(), V.size());
for (size_t i = 0, e = Values.size(); i != e; ++i) {
EXPECT_EQ(Values[i], V[i]);
EXPECT_EQ(Values[i], *std::next(V.begin(), i));
}
EXPECT_EQ(V.end(), std::next(V.begin(), Values.size()));
}
};
typedef ::testing::Types<TinyPtrVector<int*>,
TinyPtrVector<double*>
> TinyPtrVectorTestTypes;
TYPED_TEST_CASE(TinyPtrVectorTest, TinyPtrVectorTestTypes);
TYPED_TEST(TinyPtrVectorTest, EmptyTest) {
this->expectValues(this->V, this->testArray(0));
}
TYPED_TEST(TinyPtrVectorTest, PushPopBack) {
this->V.push_back(this->TestPtrs[0]);
this->expectValues(this->V, this->testArray(1));
this->V.push_back(this->TestPtrs[1]);
this->expectValues(this->V, this->testArray(2));
this->V.push_back(this->TestPtrs[2]);
this->expectValues(this->V, this->testArray(3));
this->V.push_back(this->TestPtrs[3]);
this->expectValues(this->V, this->testArray(4));
this->V.push_back(this->TestPtrs[4]);
this->expectValues(this->V, this->testArray(5));
// Pop and clobber a few values to keep things interesting.
this->V.pop_back();
this->expectValues(this->V, this->testArray(4));
this->V.pop_back();
this->expectValues(this->V, this->testArray(3));
this->TestPtrs[3] = &this->TestValues[42];
this->TestPtrs[4] = &this->TestValues[43];
this->V.push_back(this->TestPtrs[3]);
this->expectValues(this->V, this->testArray(4));
this->V.push_back(this->TestPtrs[4]);
this->expectValues(this->V, this->testArray(5));
this->V.pop_back();
this->expectValues(this->V, this->testArray(4));
this->V.pop_back();
this->expectValues(this->V, this->testArray(3));
this->V.pop_back();
this->expectValues(this->V, this->testArray(2));
this->V.pop_back();
this->expectValues(this->V, this->testArray(1));
this->V.pop_back();
this->expectValues(this->V, this->testArray(0));
this->appendValues(this->V, this->testArray(42));
this->expectValues(this->V, this->testArray(42));
}
TYPED_TEST(TinyPtrVectorTest, ClearTest) {
this->expectValues(this->V, this->testArray(0));
this->V.clear();
this->expectValues(this->V, this->testArray(0));
this->appendValues(this->V, this->testArray(1));
this->expectValues(this->V, this->testArray(1));
this->V.clear();
this->expectValues(this->V, this->testArray(0));
this->appendValues(this->V, this->testArray(42));
this->expectValues(this->V, this->testArray(42));
this->V.clear();
this->expectValues(this->V, this->testArray(0));
}
TYPED_TEST(TinyPtrVectorTest, CopyAndMoveCtorTest) {
this->appendValues(this->V, this->testArray(42));
TypeParam Copy(this->V);
this->expectValues(Copy, this->testArray(42));
// This is a separate copy, and so it shouldn't destroy the original.
Copy.clear();
this->expectValues(Copy, this->testArray(0));
this->expectValues(this->V, this->testArray(42));
TypeParam Copy2(this->V2);
this->appendValues(Copy2, this->testArray(42));
this->expectValues(Copy2, this->testArray(42));
this->expectValues(this->V2, this->testArray(0));
TypeParam Move(std::move(Copy2));
this->expectValues(Move, this->testArray(42));
this->expectValues(Copy2, this->testArray(0));
TypeParam MultipleElements(this->testArray(2));
TypeParam SingleElement(this->testArray(1));
MultipleElements = std::move(SingleElement);
this->expectValues(MultipleElements, this->testArray(1));
this->expectValues(SingleElement, this->testArray(0));
}
TYPED_TEST(TinyPtrVectorTest, CopyAndMoveTest) {
this->V = this->V2;
this->expectValues(this->V, this->testArray(0));
this->expectValues(this->V2, this->testArray(0));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(0));
this->setVectors(this->testArray(1), this->testArray(0));
this->V = this->V2;
this->expectValues(this->V, this->testArray(0));
this->expectValues(this->V2, this->testArray(0));
this->setVectors(this->testArray(1), this->testArray(0));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(0));
this->setVectors(this->testArray(2), this->testArray(0));
this->V = this->V2;
this->expectValues(this->V, this->testArray(0));
this->expectValues(this->V2, this->testArray(0));
this->setVectors(this->testArray(2), this->testArray(0));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(0));
this->setVectors(this->testArray(42), this->testArray(0));
this->V = this->V2;
this->expectValues(this->V, this->testArray(0));
this->expectValues(this->V2, this->testArray(0));
this->setVectors(this->testArray(42), this->testArray(0));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(0));
this->setVectors(this->testArray(0), this->testArray(1));
this->V = this->V2;
this->expectValues(this->V, this->testArray(1));
this->expectValues(this->V2, this->testArray(1));
this->setVectors(this->testArray(0), this->testArray(1));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(1));
this->setVectors(this->testArray(0), this->testArray(2));
this->V = this->V2;
this->expectValues(this->V, this->testArray(2));
this->expectValues(this->V2, this->testArray(2));
this->setVectors(this->testArray(0), this->testArray(2));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(2));
this->setVectors(this->testArray(0), this->testArray(42));
this->V = this->V2;
this->expectValues(this->V, this->testArray(42));
this->expectValues(this->V2, this->testArray(42));
this->setVectors(this->testArray(0), this->testArray(42));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(42));
this->setVectors(this->testArray(1), this->testArray(1));
this->V = this->V2;
this->expectValues(this->V, this->testArray(1));
this->expectValues(this->V2, this->testArray(1));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(1));
this->setVectors(this->testArray(1), this->testArray(2));
this->V = this->V2;
this->expectValues(this->V, this->testArray(2));
this->expectValues(this->V2, this->testArray(2));
this->setVectors(this->testArray(1), this->testArray(2));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(2));
this->setVectors(this->testArray(1), this->testArray(42));
this->V = this->V2;
this->expectValues(this->V, this->testArray(42));
this->expectValues(this->V2, this->testArray(42));
this->setVectors(this->testArray(1), this->testArray(42));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(42));
this->setVectors(this->testArray(2), this->testArray(1));
this->V = this->V2;
this->expectValues(this->V, this->testArray(1));
this->expectValues(this->V2, this->testArray(1));
this->setVectors(this->testArray(2), this->testArray(1));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(1));
this->setVectors(this->testArray(2), this->testArray(2));
this->V = this->V2;
this->expectValues(this->V, this->testArray(2));
this->expectValues(this->V2, this->testArray(2));
this->setVectors(this->testArray(2), this->testArray(2));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(2));
this->setVectors(this->testArray(2), this->testArray(42));
this->V = this->V2;
this->expectValues(this->V, this->testArray(42));
this->expectValues(this->V2, this->testArray(42));
this->setVectors(this->testArray(2), this->testArray(42));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(42));
this->setVectors(this->testArray(42), this->testArray(1));
this->V = this->V2;
this->expectValues(this->V, this->testArray(1));
this->expectValues(this->V2, this->testArray(1));
this->setVectors(this->testArray(42), this->testArray(1));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(1));
this->setVectors(this->testArray(42), this->testArray(2));
this->V = this->V2;
this->expectValues(this->V, this->testArray(2));
this->expectValues(this->V2, this->testArray(2));
this->setVectors(this->testArray(42), this->testArray(2));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(2));
this->setVectors(this->testArray(42), this->testArray(42));
this->V = this->V2;
this->expectValues(this->V, this->testArray(42));
this->expectValues(this->V2, this->testArray(42));
this->setVectors(this->testArray(42), this->testArray(42));
this->V = std::move(this->V2);
this->expectValues(this->V, this->testArray(42));
}
TYPED_TEST(TinyPtrVectorTest, EraseTest) {
this->appendValues(this->V, this->testArray(1));
this->expectValues(this->V, this->testArray(1));
this->V.erase(this->V.begin());
this->expectValues(this->V, this->testArray(0));
this->appendValues(this->V, this->testArray(42));
this->expectValues(this->V, this->testArray(42));
this->V.erase(this->V.begin());
this->TestPtrs.erase(this->TestPtrs.begin());
this->expectValues(this->V, this->testArray(41));
this->V.erase(std::next(this->V.begin(), 1));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 1));
this->expectValues(this->V, this->testArray(40));
this->V.erase(std::next(this->V.begin(), 2));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 2));
this->expectValues(this->V, this->testArray(39));
this->V.erase(std::next(this->V.begin(), 5));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 5));
this->expectValues(this->V, this->testArray(38));
this->V.erase(std::next(this->V.begin(), 13));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 13));
this->expectValues(this->V, this->testArray(37));
typename TypeParam::iterator I = this->V.begin();
do {
I = this->V.erase(I);
} while (I != this->V.end());
this->expectValues(this->V, this->testArray(0));
}
TYPED_TEST(TinyPtrVectorTest, EraseRangeTest) {
this->appendValues(this->V, this->testArray(1));
this->expectValues(this->V, this->testArray(1));
this->V.erase(this->V.begin(), this->V.begin());
this->expectValues(this->V, this->testArray(1));
this->V.erase(this->V.end(), this->V.end());
this->expectValues(this->V, this->testArray(1));
this->V.erase(this->V.begin(), this->V.end());
this->expectValues(this->V, this->testArray(0));
this->appendValues(this->V, this->testArray(42));
this->expectValues(this->V, this->testArray(42));
this->V.erase(this->V.begin(), std::next(this->V.begin(), 1));
this->TestPtrs.erase(this->TestPtrs.begin(),
std::next(this->TestPtrs.begin(), 1));
this->expectValues(this->V, this->testArray(41));
this->V.erase(std::next(this->V.begin(), 1), std::next(this->V.begin(), 2));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 1),
std::next(this->TestPtrs.begin(), 2));
this->expectValues(this->V, this->testArray(40));
this->V.erase(std::next(this->V.begin(), 2), std::next(this->V.begin(), 4));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 2),
std::next(this->TestPtrs.begin(), 4));
this->expectValues(this->V, this->testArray(38));
this->V.erase(std::next(this->V.begin(), 5), std::next(this->V.begin(), 10));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 5),
std::next(this->TestPtrs.begin(), 10));
this->expectValues(this->V, this->testArray(33));
this->V.erase(std::next(this->V.begin(), 13), std::next(this->V.begin(), 26));
this->TestPtrs.erase(std::next(this->TestPtrs.begin(), 13),
std::next(this->TestPtrs.begin(), 26));
this->expectValues(this->V, this->testArray(20));
this->V.erase(std::next(this->V.begin(), 7), this->V.end());
this->expectValues(this->V, this->testArray(7));
this->V.erase(this->V.begin(), this->V.end());
this->expectValues(this->V, this->testArray(0));
}
TYPED_TEST(TinyPtrVectorTest, Insert) {
this->V.insert(this->V.end(), this->TestPtrs[0]);
this->expectValues(this->V, this->testArray(1));
this->V.clear();
this->appendValues(this->V, this->testArray(4));
this->expectValues(this->V, this->testArray(4));
this->V.insert(this->V.end(), this->TestPtrs[4]);
this->expectValues(this->V, this->testArray(5));
this->V.insert(this->V.begin(), this->TestPtrs[42]);
this->TestPtrs.insert(this->TestPtrs.begin(), this->TestPtrs[42]);
this->expectValues(this->V, this->testArray(6));
this->V.insert(std::next(this->V.begin(), 3), this->TestPtrs[43]);
this->TestPtrs.insert(std::next(this->TestPtrs.begin(), 3),
this->TestPtrs[43]);
this->expectValues(this->V, this->testArray(7));
}
TYPED_TEST(TinyPtrVectorTest, InsertRange) {
this->V.insert(this->V.end(), this->TestPtrs.begin(), this->TestPtrs.begin());
this->expectValues(this->V, this->testArray(0));
this->V.insert(this->V.begin(), this->TestPtrs.begin(),
this->TestPtrs.begin());
this->expectValues(this->V, this->testArray(0));
this->V.insert(this->V.end(), this->TestPtrs.end(), this->TestPtrs.end());
this->expectValues(this->V, this->testArray(0));
this->V.insert(this->V.end(), this->TestPtrs.begin(),
std::next(this->TestPtrs.begin()));
this->expectValues(this->V, this->testArray(1));
this->V.clear();
this->V.insert(this->V.end(), this->TestPtrs.begin(),
std::next(this->TestPtrs.begin(), 2));
this->expectValues(this->V, this->testArray(2));
this->V.clear();
this->V.insert(this->V.end(), this->TestPtrs.begin(),
std::next(this->TestPtrs.begin(), 42));
this->expectValues(this->V, this->testArray(42));
this->V.clear();
this->V.insert(this->V.end(),
std::next(this->TestPtrs.begin(), 5),
std::next(this->TestPtrs.begin(), 13));
this->V.insert(this->V.begin(),
std::next(this->TestPtrs.begin(), 0),
std::next(this->TestPtrs.begin(), 3));
this->V.insert(std::next(this->V.begin(), 2),
std::next(this->TestPtrs.begin(), 2),
std::next(this->TestPtrs.begin(), 4));
this->V.erase(std::next(this->V.begin(), 4));
this->V.insert(std::next(this->V.begin(), 4),
std::next(this->TestPtrs.begin(), 4),
std::next(this->TestPtrs.begin(), 5));
this->expectValues(this->V, this->testArray(13));
}
}
TEST(TinyPtrVectorTest, SingleEltCtorTest) {
int v = 55;
TinyPtrVector<int *> V(&v);
EXPECT_TRUE(V.size() == 1);
EXPECT_FALSE(V.empty());
EXPECT_TRUE(V.front() == &v);
}
TEST(TinyPtrVectorTest, ArrayRefCtorTest) {
int data_array[128];
std::vector<int *> data;
for (unsigned i = 0, e = 128; i != e; ++i) {
data_array[i] = 324 - int(i);
data.push_back(&data_array[i]);
}
TinyPtrVector<int *> V(data);
EXPECT_TRUE(V.size() == 128);
EXPECT_FALSE(V.empty());
for (unsigned i = 0, e = 128; i != e; ++i) {
EXPECT_TRUE(V[i] == data[i]);
}
}
TEST(TinyPtrVectorTest, MutableArrayRefTest) {
int data_array[128];
std::vector<int *> data;
for (unsigned i = 0, e = 128; i != e; ++i) {
data_array[i] = 324 - int(i);
data.push_back(&data_array[i]);
}
TinyPtrVector<int *> V(data);
EXPECT_TRUE(V.size() == 128);
EXPECT_FALSE(V.empty());
MutableArrayRef<int *> mut_array = V;
for (unsigned i = 0, e = 128; i != e; ++i) {
EXPECT_TRUE(mut_array[i] == data[i]);
mut_array[i] = 324 + mut_array[i];
EXPECT_TRUE(mut_array[i] == (324 + data[i]));
}
}
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