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| //===- unittests/ADT/IListBaseTest.cpp - ilist_base unit tests ------------===//
//
// 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/ilist_base.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
// Test fixture.
template <typename T> class IListBaseTest : public ::testing::Test {};
// Test variants with the same test.
typedef ::testing::Types<ilist_base<false>, ilist_base<true>>
IListBaseTestTypes;
TYPED_TEST_CASE(IListBaseTest, IListBaseTestTypes);
TYPED_TEST(IListBaseTest, insertBeforeImpl) {
typedef TypeParam list_base_type;
typedef typename list_base_type::node_base_type node_base_type;
node_base_type S, A, B;
// [S] <-> [S]
S.setPrev(&S);
S.setNext(&S);
// [S] <-> A <-> [S]
list_base_type::insertBeforeImpl(S, A);
EXPECT_EQ(&A, S.getPrev());
EXPECT_EQ(&S, A.getPrev());
EXPECT_EQ(&A, S.getNext());
EXPECT_EQ(&S, A.getNext());
// [S] <-> A <-> B <-> [S]
list_base_type::insertBeforeImpl(S, B);
EXPECT_EQ(&B, S.getPrev());
EXPECT_EQ(&A, B.getPrev());
EXPECT_EQ(&S, A.getPrev());
EXPECT_EQ(&A, S.getNext());
EXPECT_EQ(&B, A.getNext());
EXPECT_EQ(&S, B.getNext());
}
TYPED_TEST(IListBaseTest, removeImpl) {
typedef TypeParam list_base_type;
typedef typename list_base_type::node_base_type node_base_type;
node_base_type S, A, B;
// [S] <-> A <-> B <-> [S]
S.setPrev(&S);
S.setNext(&S);
list_base_type::insertBeforeImpl(S, A);
list_base_type::insertBeforeImpl(S, B);
// [S] <-> B <-> [S]
list_base_type::removeImpl(A);
EXPECT_EQ(&B, S.getPrev());
EXPECT_EQ(&S, B.getPrev());
EXPECT_EQ(&B, S.getNext());
EXPECT_EQ(&S, B.getNext());
EXPECT_EQ(nullptr, A.getPrev());
EXPECT_EQ(nullptr, A.getNext());
// [S] <-> [S]
list_base_type::removeImpl(B);
EXPECT_EQ(&S, S.getPrev());
EXPECT_EQ(&S, S.getNext());
EXPECT_EQ(nullptr, B.getPrev());
EXPECT_EQ(nullptr, B.getNext());
}
TYPED_TEST(IListBaseTest, removeRangeImpl) {
typedef TypeParam list_base_type;
typedef typename list_base_type::node_base_type node_base_type;
node_base_type S, A, B, C, D;
// [S] <-> A <-> B <-> C <-> D <-> [S]
S.setPrev(&S);
S.setNext(&S);
list_base_type::insertBeforeImpl(S, A);
list_base_type::insertBeforeImpl(S, B);
list_base_type::insertBeforeImpl(S, C);
list_base_type::insertBeforeImpl(S, D);
// [S] <-> A <-> D <-> [S]
list_base_type::removeRangeImpl(B, D);
EXPECT_EQ(&D, S.getPrev());
EXPECT_EQ(&A, D.getPrev());
EXPECT_EQ(&S, A.getPrev());
EXPECT_EQ(&A, S.getNext());
EXPECT_EQ(&D, A.getNext());
EXPECT_EQ(&S, D.getNext());
EXPECT_EQ(nullptr, B.getPrev());
EXPECT_EQ(nullptr, C.getNext());
}
TYPED_TEST(IListBaseTest, removeRangeImplAllButSentinel) {
typedef TypeParam list_base_type;
typedef typename list_base_type::node_base_type node_base_type;
node_base_type S, A, B;
// [S] <-> A <-> B <-> [S]
S.setPrev(&S);
S.setNext(&S);
list_base_type::insertBeforeImpl(S, A);
list_base_type::insertBeforeImpl(S, B);
// [S] <-> [S]
list_base_type::removeRangeImpl(A, S);
EXPECT_EQ(&S, S.getPrev());
EXPECT_EQ(&S, S.getNext());
EXPECT_EQ(nullptr, A.getPrev());
EXPECT_EQ(nullptr, B.getNext());
}
TYPED_TEST(IListBaseTest, transferBeforeImpl) {
typedef TypeParam list_base_type;
typedef typename list_base_type::node_base_type node_base_type;
node_base_type S1, S2, A, B, C, D, E;
// [S1] <-> A <-> B <-> C <-> [S1]
S1.setPrev(&S1);
S1.setNext(&S1);
list_base_type::insertBeforeImpl(S1, A);
list_base_type::insertBeforeImpl(S1, B);
list_base_type::insertBeforeImpl(S1, C);
// [S2] <-> D <-> E <-> [S2]
S2.setPrev(&S2);
S2.setNext(&S2);
list_base_type::insertBeforeImpl(S2, D);
list_base_type::insertBeforeImpl(S2, E);
// [S1] <-> C <-> [S1]
list_base_type::transferBeforeImpl(D, A, C);
EXPECT_EQ(&C, S1.getPrev());
EXPECT_EQ(&S1, C.getPrev());
EXPECT_EQ(&C, S1.getNext());
EXPECT_EQ(&S1, C.getNext());
// [S2] <-> A <-> B <-> D <-> E <-> [S2]
EXPECT_EQ(&E, S2.getPrev());
EXPECT_EQ(&D, E.getPrev());
EXPECT_EQ(&B, D.getPrev());
EXPECT_EQ(&A, B.getPrev());
EXPECT_EQ(&S2, A.getPrev());
EXPECT_EQ(&A, S2.getNext());
EXPECT_EQ(&B, A.getNext());
EXPECT_EQ(&D, B.getNext());
EXPECT_EQ(&E, D.getNext());
EXPECT_EQ(&S2, E.getNext());
}
} // end namespace
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