diff options
Diffstat (limited to 'core/fxcrt/string_pool_template_unittest.cpp')
-rw-r--r-- | core/fxcrt/string_pool_template_unittest.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/core/fxcrt/string_pool_template_unittest.cpp b/core/fxcrt/string_pool_template_unittest.cpp new file mode 100644 index 0000000000..717e33d919 --- /dev/null +++ b/core/fxcrt/string_pool_template_unittest.cpp @@ -0,0 +1,97 @@ +// 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 |