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author | tsepez <tsepez@chromium.org> | 2016-09-15 14:01:31 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2016-09-15 14:01:31 -0700 |
commit | d9871435eb7cea00a173baf780934f9d3525329a (patch) | |
tree | ec96dffc6e25865d6015f754b1a6406621c31bf4 /core/fxcrt/cfx_string_pool_template_unittest.cpp | |
parent | 0a17fafd723e8684d1deb4b5ceea58967a0154da (diff) | |
download | pdfium-d9871435eb7cea00a173baf780934f9d3525329a.tar.xz |
Add string pools to save storage.
Adds string hashes so CFX strings will interoperate with
STL unordered containers.
These will be employed per-document in a subsequent cl.
BUG=pdfium:597
Review-Url: https://codereview.chromium.org/2341683005
Diffstat (limited to 'core/fxcrt/cfx_string_pool_template_unittest.cpp')
-rw-r--r-- | core/fxcrt/cfx_string_pool_template_unittest.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/core/fxcrt/cfx_string_pool_template_unittest.cpp b/core/fxcrt/cfx_string_pool_template_unittest.cpp new file mode 100644 index 0000000000..95a9007b92 --- /dev/null +++ b/core/fxcrt/cfx_string_pool_template_unittest.cpp @@ -0,0 +1,94 @@ +// 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/include/cfx_string_pool_template.h" +#include "core/fxcrt/include/fx_string.h" +#include "testing/fx_string_testhelpers.h" +#include "testing/gtest/include/gtest/gtest.h" + +TEST(fxcrt, ByteStringPool) { + CFX_ByteStringPool pool; + + CFX_ByteString null1; + CFX_ByteString null2; + CFX_ByteString goats1("goats"); + CFX_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); + + CFX_ByteString interned_null1 = pool.Intern(null1); + CFX_ByteString interned_null2 = pool.Intern(null2); + CFX_ByteString interned_goats1 = pool.Intern(goats1); + CFX_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(); + CFX_ByteString reinterned_null2 = pool.Intern(null2); + CFX_ByteString reinterned_null1 = pool.Intern(null2); + CFX_ByteString reinterned_goats2 = pool.Intern(goats2); + CFX_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(fxcrt, WideStringPool) { + CFX_WideStringPool pool; + + CFX_WideString null1; + CFX_WideString null2; + CFX_WideString goats1(L"goats"); + CFX_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); + + CFX_WideString interned_null1 = pool.Intern(null1); + CFX_WideString interned_null2 = pool.Intern(null2); + CFX_WideString interned_goats1 = pool.Intern(goats1); + CFX_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(); + CFX_WideString reinterned_null2 = pool.Intern(null2); + CFX_WideString reinterned_null1 = pool.Intern(null2); + CFX_WideString reinterned_goats2 = pool.Intern(goats2); + CFX_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); +} |