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/* Copyright (c) 2011, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include <gtest/gtest.h>
#include <sys/types.h>
#include "sql/sql_plist.h"
#include "template_utils.h"
namespace sql_plist_unittest {
// A simple helper function to insert values into a List.
template <class T, int size, class L>
void insert_values(T (&array)[size], L *list) {
uint ix, elements = list->elements();
for (ix = 0; ix < size; ++ix) list->push_back(&array[ix]);
EXPECT_EQ(ix + elements, list->elements());
}
/*
The fixture for testing the MySQL List and List_iterator classes.
A fresh instance of this class will be created for each of the
TEST_F functions below.
*/
class IPListTest : public ::testing::Test {
protected:
IPListTest() : m_int_list(), m_int_list_iter(m_int_list) {}
public:
template <typename V>
struct I_P_ListTestValue {
V value;
I_P_ListTestValue(V val) : value(val) {}
bool operator==(const I_P_ListTestValue<V> &obj) const {
return value == obj.value;
}
struct I_P_ListTestValue<V> *next;
struct I_P_ListTestValue<V> **prev;
};
protected:
template <typename V>
struct I_P_ListCountedPushBack {
typedef I_P_ListTestValue<V> Value;
typedef I_P_List<Value, I_P_List_adapter<Value, &Value::next, &Value::prev>,
I_P_List_counter, I_P_List_fast_push_back<Value>>
Type;
};
I_P_ListCountedPushBack<int>::Type m_int_list;
I_P_ListCountedPushBack<int>::Type::Iterator m_int_list_iter;
private:
IPListTest(IPListTest const &) = delete;
IPListTest &operator=(IPListTest const &) = delete;
};
// Allow construction of test messages via the << operator.
template <typename T>
std::ostream &operator<<(std::ostream &s,
const IPListTest::I_P_ListTestValue<T> &v) {
return s << v.value;
}
// Tests that we can construct and destruct lists.
TEST_F(IPListTest, ConstructAndDestruct) {
EXPECT_TRUE(m_int_list.is_empty());
I_P_ListCountedPushBack<int>::Type *p_int_list;
p_int_list = new I_P_ListCountedPushBack<int>::Type;
EXPECT_TRUE(p_int_list->is_empty());
delete p_int_list;
}
// Tests basic operations push and remove.
TEST_F(IPListTest, BasicOperations) {
I_P_ListTestValue<int> v1(1), v2(2), v3(3);
m_int_list.push_front(&v1);
m_int_list.insert_after(&v1, &v2);
m_int_list.push_back(&v3);
EXPECT_FALSE(m_int_list.is_empty());
EXPECT_EQ(3U, m_int_list.elements());
EXPECT_EQ(&v1, m_int_list.front());
m_int_list.remove(&v1);
EXPECT_EQ(&v2, m_int_list.front());
m_int_list.remove(&v2);
EXPECT_EQ(&v3, m_int_list.front());
m_int_list.remove(&v3);
EXPECT_TRUE(m_int_list.is_empty()) << "The list should be empty now!";
}
// Tests that we can iterate over values.
TEST_F(IPListTest, Iterate) {
I_P_ListTestValue<int> values[] = {3, 2, 1};
insert_values(values, &m_int_list);
m_int_list_iter.init(m_int_list);
for (size_t ix = 0; ix < array_elements(values); ++ix) {
EXPECT_EQ(values[ix], *m_int_list_iter++);
}
m_int_list_iter.init(m_int_list);
I_P_ListTestValue<int> *value;
int value_number = 0;
while ((value = m_int_list_iter++)) {
EXPECT_EQ(values[value_number++], value->value);
}
}
} // namespace sql_plist_unittest
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