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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fxcrt/string_pool_template.h"
#include "core/fxcrt/fx_string.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace fxcrt {
TEST(StringPool, ByteString) {
ByteStringPool pool;
ByteString null1;
ByteString null2;
ByteString goats1("goats");
ByteString goats2("goats");
// Underlying storage, if non-null, is not shared.
EXPECT_EQ(nullptr, null1.m_pData.Get());
EXPECT_EQ(nullptr, null2.m_pData.Get());
EXPECT_NE(goats1.m_pData, goats2.m_pData);
ByteString interned_null1 = pool.Intern(null1);
ByteString interned_null2 = pool.Intern(null2);
ByteString interned_goats1 = pool.Intern(goats1);
ByteString interned_goats2 = pool.Intern(goats2);
// Strings are logically equal after being interned.
EXPECT_EQ(null1, interned_null1);
EXPECT_EQ(null2, interned_null2);
EXPECT_EQ(goats1, interned_goats1);
EXPECT_EQ(goats2, interned_goats2);
// Interned underlying storage, if non-null, belongs to first seen.
EXPECT_EQ(nullptr, interned_null1.m_pData.Get());
EXPECT_EQ(nullptr, interned_null2.m_pData.Get());
EXPECT_EQ(goats1.m_pData, interned_goats1.m_pData);
EXPECT_EQ(goats1.m_pData, interned_goats2.m_pData);
pool.Clear();
ByteString reinterned_null2 = pool.Intern(null2);
ByteString reinterned_null1 = pool.Intern(null2);
ByteString reinterned_goats2 = pool.Intern(goats2);
ByteString reinterned_goats1 = pool.Intern(goats2);
// After clearing pool, storage was re-interned using second strings.
EXPECT_EQ(nullptr, interned_null1.m_pData.Get());
EXPECT_EQ(nullptr, interned_null2.m_pData.Get());
EXPECT_EQ(goats2.m_pData, reinterned_goats1.m_pData);
EXPECT_EQ(goats2.m_pData, reinterned_goats2.m_pData);
}
TEST(StringPool, WideString) {
WideStringPool pool;
WideString null1;
WideString null2;
WideString goats1(L"goats");
WideString goats2(L"goats");
// Underlying storage, if non-null, is not shared.
EXPECT_EQ(nullptr, null1.m_pData.Get());
EXPECT_EQ(nullptr, null2.m_pData.Get());
EXPECT_NE(goats1.m_pData, goats2.m_pData);
WideString interned_null1 = pool.Intern(null1);
WideString interned_null2 = pool.Intern(null2);
WideString interned_goats1 = pool.Intern(goats1);
WideString interned_goats2 = pool.Intern(goats2);
// Strings are logically equal after being interned.
EXPECT_EQ(null1, interned_null1);
EXPECT_EQ(null2, interned_null2);
EXPECT_EQ(goats1, interned_goats1);
EXPECT_EQ(goats2, interned_goats2);
// Interned underlying storage, if non-null, belongs to first seen.
EXPECT_EQ(nullptr, interned_null1.m_pData.Get());
EXPECT_EQ(nullptr, interned_null2.m_pData.Get());
EXPECT_EQ(goats1.m_pData, interned_goats1.m_pData);
EXPECT_EQ(goats1.m_pData, interned_goats2.m_pData);
pool.Clear();
WideString reinterned_null2 = pool.Intern(null2);
WideString reinterned_null1 = pool.Intern(null2);
WideString reinterned_goats2 = pool.Intern(goats2);
WideString reinterned_goats1 = pool.Intern(goats2);
// After clearing pool, storage was re-interned using second strings.
EXPECT_EQ(nullptr, interned_null1.m_pData.Get());
EXPECT_EQ(nullptr, interned_null2.m_pData.Get());
EXPECT_EQ(goats2.m_pData, reinterned_goats1.m_pData);
EXPECT_EQ(goats2.m_pData, reinterned_goats2.m_pData);
}
} // namespace fxcrt
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