diff options
Diffstat (limited to 'image/test/gtest/TestCopyOnWrite.cpp')
-rw-r--r-- | image/test/gtest/TestCopyOnWrite.cpp | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/image/test/gtest/TestCopyOnWrite.cpp b/image/test/gtest/TestCopyOnWrite.cpp deleted file mode 100644 index 0d420b672..000000000 --- a/image/test/gtest/TestCopyOnWrite.cpp +++ /dev/null @@ -1,235 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include "gtest/gtest.h" - -#include "CopyOnWrite.h" - -using namespace mozilla; -using namespace mozilla::image; - -struct ValueStats -{ - int32_t mCopies = 0; - int32_t mFrees = 0; - int32_t mCalls = 0; - int32_t mConstCalls = 0; - int32_t mSerial = 0; -}; - -struct Value -{ - NS_INLINE_DECL_REFCOUNTING(Value) - - explicit Value(ValueStats& aStats) - : mStats(aStats) - , mSerial(mStats.mSerial++) - { } - - Value(const Value& aOther) - : mStats(aOther.mStats) - , mSerial(mStats.mSerial++) - { - mStats.mCopies++; - } - - void Go() { mStats.mCalls++; } - void Go() const { mStats.mConstCalls++; } - - int32_t Serial() const { return mSerial; } - -protected: - ~Value() { mStats.mFrees++; } - -private: - ValueStats& mStats; - int32_t mSerial; -}; - -TEST(ImageCopyOnWrite, Read) -{ - ValueStats stats; - - { - CopyOnWrite<Value> cow(new Value(stats)); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_TRUE(cow.CanRead()); - - cow.Read([&](const Value* aValue) { - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, aValue->Serial()); - EXPECT_TRUE(cow.CanRead()); - EXPECT_TRUE(cow.CanWrite()); - - aValue->Go(); - - EXPECT_EQ(0, stats.mCalls); - EXPECT_EQ(1, stats.mConstCalls); - }); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, stats.mCalls); - EXPECT_EQ(1, stats.mConstCalls); - } - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(1, stats.mFrees); -} - -TEST(ImageCopyOnWrite, RecursiveRead) -{ - ValueStats stats; - - { - CopyOnWrite<Value> cow(new Value(stats)); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_TRUE(cow.CanRead()); - - cow.Read([&](const Value* aValue) { - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, aValue->Serial()); - EXPECT_TRUE(cow.CanRead()); - EXPECT_TRUE(cow.CanWrite()); - - // Make sure that Read() inside a Read() succeeds. - cow.Read([&](const Value* aValue) { - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, aValue->Serial()); - EXPECT_TRUE(cow.CanRead()); - EXPECT_TRUE(cow.CanWrite()); - - aValue->Go(); - - EXPECT_EQ(0, stats.mCalls); - EXPECT_EQ(1, stats.mConstCalls); - }, []() { - // This gets called if we can't read. We shouldn't get here. - EXPECT_TRUE(false); - }); - }); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, stats.mCalls); - EXPECT_EQ(1, stats.mConstCalls); - } - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(1, stats.mFrees); -} - -TEST(ImageCopyOnWrite, Write) -{ - ValueStats stats; - - { - CopyOnWrite<Value> cow(new Value(stats)); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_TRUE(cow.CanRead()); - EXPECT_TRUE(cow.CanWrite()); - - cow.Write([&](Value* aValue) { - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, aValue->Serial()); - EXPECT_TRUE(!cow.CanRead()); - EXPECT_TRUE(!cow.CanWrite()); - - aValue->Go(); - - EXPECT_EQ(1, stats.mCalls); - EXPECT_EQ(0, stats.mConstCalls); - }); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(1, stats.mCalls); - EXPECT_EQ(0, stats.mConstCalls); - } - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(1, stats.mFrees); -} - -TEST(ImageCopyOnWrite, WriteRecursive) -{ - ValueStats stats; - - { - CopyOnWrite<Value> cow(new Value(stats)); - - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_TRUE(cow.CanRead()); - EXPECT_TRUE(cow.CanWrite()); - - cow.Read([&](const Value* aValue) { - EXPECT_EQ(0, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(0, aValue->Serial()); - EXPECT_TRUE(cow.CanRead()); - EXPECT_TRUE(cow.CanWrite()); - - // Make sure Write() inside a Read() succeeds. - cow.Write([&](Value* aValue) { - EXPECT_EQ(1, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(1, aValue->Serial()); - EXPECT_TRUE(!cow.CanRead()); - EXPECT_TRUE(!cow.CanWrite()); - - aValue->Go(); - - EXPECT_EQ(1, stats.mCalls); - EXPECT_EQ(0, stats.mConstCalls); - - // Make sure Read() inside a Write() fails. - cow.Read([](const Value* aValue) { - // This gets called if we can read. We shouldn't get here. - EXPECT_TRUE(false); - }, []() { - // This gets called if we can't read. We *should* get here. - EXPECT_TRUE(true); - }); - - // Make sure Write() inside a Write() fails. - cow.Write([](Value* aValue) { - // This gets called if we can write. We shouldn't get here. - EXPECT_TRUE(false); - }, []() { - // This gets called if we can't write. We *should* get here. - EXPECT_TRUE(true); - }); - }, []() { - // This gets called if we can't write. We shouldn't get here. - EXPECT_TRUE(false); - }); - - aValue->Go(); - - EXPECT_EQ(1, stats.mCopies); - EXPECT_EQ(0, stats.mFrees); - EXPECT_EQ(1, stats.mCalls); - EXPECT_EQ(1, stats.mConstCalls); - }); - - EXPECT_EQ(1, stats.mCopies); - EXPECT_EQ(1, stats.mFrees); - EXPECT_EQ(1, stats.mCalls); - EXPECT_EQ(1, stats.mConstCalls); - } - - EXPECT_EQ(1, stats.mCopies); - EXPECT_EQ(2, stats.mFrees); -} |