| // Copyright 2016 The PDFium Authors |
| // 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_FALSE(null1.m_pData.Get()); |
| EXPECT_FALSE(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_FALSE(interned_null1.m_pData.Get()); |
| EXPECT_FALSE(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_FALSE(interned_null1.m_pData.Get()); |
| EXPECT_FALSE(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_FALSE(null1.m_pData.Get()); |
| EXPECT_FALSE(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_FALSE(interned_null1.m_pData.Get()); |
| EXPECT_FALSE(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_FALSE(interned_null1.m_pData.Get()); |
| EXPECT_FALSE(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 |