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