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05294a4e68
Count iterations of zero-trip loops and assert the count is zero, rather than asserting inside the loop. Unreachable functions should use llvm_unreachable. Remove tautological 'if' statements, even when they're following a pattern of checks. Found by the Rotten Green Tests project.
273 lines
7.9 KiB
C++
273 lines
7.9 KiB
C++
//===--------- ImmutableListTest.cpp - ImmutableList unit tests --*- C++ -*-==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/ImmutableList.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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template <typename Fundamental> struct Wrapper : llvm::FoldingSetNode {
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Fundamental F;
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Wrapper(Fundamental F) : F(F) {}
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operator Fundamental() const { return F; }
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void Profile(FoldingSetNodeID &ID) const { ID.AddInteger(F); }
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};
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class ImmutableListTest : public testing::Test {};
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void concat(const ImmutableList<Wrapper<char>> &L, char *Buffer) {
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int Index = 0;
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for (ImmutableList<Wrapper<char>>::iterator It = L.begin(), End = L.end();
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It != End; ++It) {
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Buffer[Index++] = *It;
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}
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Buffer[Index] = '\0';
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}
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TEST_F(ImmutableListTest, EmptyIntListTest) {
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ImmutableList<Wrapper<int>>::Factory f;
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EXPECT_TRUE(f.getEmptyList() == f.getEmptyList());
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EXPECT_TRUE(f.getEmptyList().isEqual(f.getEmptyList()));
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EXPECT_TRUE(f.getEmptyList().isEmpty());
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ImmutableList<Wrapper<int>> L = f.getEmptyList();
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EXPECT_EQ(nullptr, L.getTail().getInternalPointer());
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EXPECT_TRUE(L.getTail().isEmpty());
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EXPECT_TRUE(L.begin() == L.end());
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}
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TEST_F(ImmutableListTest, OneElemIntListTest) {
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ImmutableList<Wrapper<int>>::Factory f;
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ImmutableList<Wrapper<int>> L = f.getEmptyList();
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ImmutableList<Wrapper<int>> L2 = f.add(3, L);
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EXPECT_TRUE(L.isEmpty());
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EXPECT_FALSE(L2.isEmpty());
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EXPECT_TRUE(L2.getTail().isEmpty());
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EXPECT_FALSE(L == L2);
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EXPECT_TRUE(L == L2.getTail());
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EXPECT_FALSE(L.isEqual(L2));
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EXPECT_TRUE(L.isEqual(L2.getTail()));
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EXPECT_FALSE(L2.begin() == L2.end());
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EXPECT_TRUE(L2.begin() != L2.end());
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EXPECT_FALSE(L.contains(3));
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EXPECT_EQ(3, L2.getHead());
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EXPECT_TRUE(L2.contains(3));
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ImmutableList<Wrapper<int>> L3 = f.add(2, L);
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EXPECT_TRUE(L.isEmpty());
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EXPECT_FALSE(L3.isEmpty());
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EXPECT_FALSE(L == L3);
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EXPECT_FALSE(L.contains(2));
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EXPECT_TRUE(L3.contains(2));
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EXPECT_EQ(2, L3.getHead());
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EXPECT_FALSE(L2 == L3);
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EXPECT_FALSE(L2.contains(2));
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}
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// We'll store references to objects of this type.
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struct Unmodifiable {
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Unmodifiable() = default;
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// We'll delete all of these special member functions to make sure no copy or
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// move happens during insertation.
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Unmodifiable(const Unmodifiable &) = delete;
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Unmodifiable(const Unmodifiable &&) = delete;
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Unmodifiable &operator=(const Unmodifiable &) = delete;
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Unmodifiable &operator=(const Unmodifiable &&) = delete;
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void doNothing() const {}
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void Profile(FoldingSetNodeID &ID) const { ID.AddPointer(this); }
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};
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// Mostly just a check whether ImmutableList::iterator can be instantiated
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// with a reference type as a template argument.
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TEST_F(ImmutableListTest, ReferenceStoringTest) {
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ImmutableList<const Unmodifiable &>::Factory f;
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Unmodifiable N;
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ImmutableList<const Unmodifiable &> L = f.create(N);
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for (ImmutableList<const Unmodifiable &>::iterator It = L.begin(),
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E = L.end();
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It != E; ++It) {
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It->doNothing();
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}
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}
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TEST_F(ImmutableListTest, CreatingIntListTest) {
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ImmutableList<Wrapper<int>>::Factory f;
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ImmutableList<Wrapper<int>> L = f.getEmptyList();
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ImmutableList<Wrapper<int>> L2 = f.create(3);
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EXPECT_FALSE(L2.isEmpty());
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EXPECT_TRUE(L2.getTail().isEmpty());
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EXPECT_EQ(3, L2.getHead());
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EXPECT_TRUE(L.isEqual(L2.getTail()));
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EXPECT_TRUE(L2.getTail().isEqual(L));
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}
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TEST_F(ImmutableListTest, MultiElemIntListTest) {
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ImmutableList<Wrapper<int>>::Factory f;
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ImmutableList<Wrapper<int>> L = f.getEmptyList();
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ImmutableList<Wrapper<int>> L2 = f.add(5, f.add(4, f.add(3, L)));
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ImmutableList<Wrapper<int>> L3 = f.add(43, f.add(20, f.add(9, L2)));
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ImmutableList<Wrapper<int>> L4 = f.add(9, L2);
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ImmutableList<Wrapper<int>> L5 = f.add(9, L2);
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EXPECT_TRUE(L.isEmpty());
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EXPECT_FALSE(L2.isEmpty());
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EXPECT_FALSE(L3.isEmpty());
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EXPECT_FALSE(L4.isEmpty());
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EXPECT_FALSE(L.contains(3));
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EXPECT_FALSE(L.contains(9));
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EXPECT_TRUE(L2.contains(3));
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EXPECT_TRUE(L2.contains(4));
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EXPECT_TRUE(L2.contains(5));
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EXPECT_FALSE(L2.contains(9));
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EXPECT_FALSE(L2.contains(0));
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EXPECT_EQ(5, L2.getHead());
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EXPECT_EQ(4, L2.getTail().getHead());
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EXPECT_EQ(3, L2.getTail().getTail().getHead());
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EXPECT_TRUE(L3.contains(43));
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EXPECT_TRUE(L3.contains(20));
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EXPECT_TRUE(L3.contains(9));
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EXPECT_TRUE(L3.contains(3));
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EXPECT_TRUE(L3.contains(4));
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EXPECT_TRUE(L3.contains(5));
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EXPECT_FALSE(L3.contains(0));
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EXPECT_EQ(43, L3.getHead());
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EXPECT_EQ(20, L3.getTail().getHead());
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EXPECT_EQ(9, L3.getTail().getTail().getHead());
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EXPECT_TRUE(L3.getTail().getTail().getTail() == L2);
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EXPECT_TRUE(L2 == L3.getTail().getTail().getTail());
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EXPECT_TRUE(L3.getTail().getTail().getTail().isEqual(L2));
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EXPECT_TRUE(L2.isEqual(L3.getTail().getTail().getTail()));
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EXPECT_TRUE(L4.contains(9));
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EXPECT_TRUE(L4.contains(3));
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EXPECT_TRUE(L4.contains(4));
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EXPECT_TRUE(L4.contains(5));
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EXPECT_FALSE(L4.contains(20));
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EXPECT_FALSE(L4.contains(43));
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EXPECT_TRUE(L4.isEqual(L4));
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EXPECT_TRUE(L4.isEqual(L5));
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EXPECT_TRUE(L5.isEqual(L4));
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EXPECT_TRUE(L5.isEqual(L5));
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}
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template <typename Fundamental>
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struct ExplicitCtorWrapper : public Wrapper<Fundamental> {
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explicit ExplicitCtorWrapper(Fundamental F) : Wrapper<Fundamental>(F) {}
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ExplicitCtorWrapper(const ExplicitCtorWrapper &) = delete;
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ExplicitCtorWrapper(ExplicitCtorWrapper &&) = default;
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ExplicitCtorWrapper &operator=(const ExplicitCtorWrapper &) = delete;
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ExplicitCtorWrapper &operator=(ExplicitCtorWrapper &&) = default;
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};
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TEST_F(ImmutableListTest, EmplaceIntListTest) {
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ImmutableList<ExplicitCtorWrapper<int>>::Factory f;
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ImmutableList<ExplicitCtorWrapper<int>> L = f.getEmptyList();
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ImmutableList<ExplicitCtorWrapper<int>> L2 = f.emplace(L, 3);
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ImmutableList<ExplicitCtorWrapper<int>> L3 =
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f.add(ExplicitCtorWrapper<int>(2), L2);
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ImmutableList<ExplicitCtorWrapper<int>> L4 =
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f.emplace(L3, ExplicitCtorWrapper<int>(1));
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ImmutableList<ExplicitCtorWrapper<int>> L5 =
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f.add(ExplicitCtorWrapper<int>(1), L3);
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EXPECT_FALSE(L2.isEmpty());
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EXPECT_TRUE(L2.getTail().isEmpty());
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EXPECT_EQ(3, L2.getHead());
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EXPECT_TRUE(L.isEqual(L2.getTail()));
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EXPECT_TRUE(L2.getTail().isEqual(L));
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EXPECT_FALSE(L3.isEmpty());
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EXPECT_FALSE(L2 == L3);
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EXPECT_EQ(2, L3.getHead());
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EXPECT_TRUE(L2 == L3.getTail());
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EXPECT_FALSE(L4.isEmpty());
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EXPECT_EQ(1, L4.getHead());
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EXPECT_TRUE(L3 == L4.getTail());
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EXPECT_TRUE(L4 == L5);
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EXPECT_TRUE(L3 == L5.getTail());
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}
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TEST_F(ImmutableListTest, CharListOrderingTest) {
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ImmutableList<Wrapper<char>>::Factory f;
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ImmutableList<Wrapper<char>> L = f.getEmptyList();
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ImmutableList<Wrapper<char>> L2 = f.add('i', f.add('e', f.add('a', L)));
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ImmutableList<Wrapper<char>> L3 = f.add('u', f.add('o', L2));
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char Buffer[10];
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concat(L3, Buffer);
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ASSERT_STREQ("uoiea", Buffer);
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}
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TEST_F(ImmutableListTest, LongListOrderingTest) {
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ImmutableList<Wrapper<long>>::Factory f;
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ImmutableList<Wrapper<long>> L = f.getEmptyList();
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ImmutableList<Wrapper<long>> L2 = f.add(3, f.add(4, f.add(5, L)));
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ImmutableList<Wrapper<long>> L3 = f.add(0, f.add(1, f.add(2, L2)));
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int i = 0;
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for (ImmutableList<Wrapper<long>>::iterator I = L.begin(), E = L.end();
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I != E; ++I) {
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i++;
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}
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ASSERT_EQ(0, i);
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i = 3;
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for (ImmutableList<Wrapper<long>>::iterator I = L2.begin(), E = L2.end();
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I != E; ++I) {
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ASSERT_EQ(i, *I);
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i++;
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}
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ASSERT_EQ(6, i);
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i = 0;
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for (ImmutableList<Wrapper<long>>::iterator I = L3.begin(), E = L3.end();
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I != E; ++I) {
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ASSERT_EQ(i, *I);
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i++;
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}
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ASSERT_EQ(6, i);
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}
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static_assert(std::is_trivially_copyable<ImmutableList<Wrapper<long>>>::value,
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"trivially copyable");
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} // namespace
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