Source/modules/indexeddb/IDBTransactionTest.cpp

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#include "config.h"
#include "modules/indexeddb/IDBTransaction.h"

#include "core/dom/DOMError.h"
#include "core/dom/Document.h"
#include "modules/indexeddb/IDBDatabase.h"
#include "modules/indexeddb/IDBDatabaseCallbacks.h"
#include "modules/indexeddb/IDBPendingTransactionMonitor.h"
#include "platform/SharedBuffer.h"

#include <gtest/gtest.h>

using namespace WebCore;

using blink::WebData;
using blink::WebIDBCallbacks;
using blink::WebIDBDatabase;
using blink::WebIDBDatabaseCallbacks;
using blink::WebIDBKey;
using blink::WebIDBKeyPath;
using blink::WebIDBKeyRange;
using blink::WebString;
using blink::WebVector;

namespace {

class IDBTransactionTest : public testing::Test {
public:
    IDBTransactionTest()
        : m_handleScope(v8::Isolate::GetCurrent())
        , m_scope(v8::Context::New(v8::Isolate::GetCurrent()))
        , m_document(Document::create())
    {
    }

    ExecutionContext* executionContext()
    {
        return m_document.get();
    }

private:
    v8::HandleScope m_handleScope;
    v8::Context::Scope m_scope;
    RefPtr<Document> m_document;
};

class FakeWebIDBDatabase : public WebIDBDatabase {
public:
    static PassOwnPtr<FakeWebIDBDatabase> create() { return adoptPtr(new FakeWebIDBDatabase()); }

    virtual void commit(long long transactionId) OVERRIDE { }
    virtual void abort(long long transactionId) OVERRIDE { }
    virtual void close() OVERRIDE { }

private:
    FakeWebIDBDatabase() { }
};

class FakeIDBDatabaseCallbacks : public IDBDatabaseCallbacks {
public:
    static PassRefPtr<FakeIDBDatabaseCallbacks> create() { return adoptRef(new FakeIDBDatabaseCallbacks()); }
    virtual void onVersionChange(int64_t oldVersion, int64_t newVersion) OVERRIDE { }
    virtual void onForcedClose() OVERRIDE { }
    virtual void onAbort(int64_t transactionId, PassRefPtr<DOMError> error) OVERRIDE { }
    virtual void onComplete(int64_t transactionId) OVERRIDE { }
private:
    FakeIDBDatabaseCallbacks() { }
};

TEST_F(IDBTransactionTest, EnsureLifetime)
{
    OwnPtr<FakeWebIDBDatabase> backend = FakeWebIDBDatabase::create();
    RefPtr<FakeIDBDatabaseCallbacks> connection = FakeIDBDatabaseCallbacks::create();
    RefPtr<IDBDatabase> db = IDBDatabase::create(executionContext(), backend.release(), connection);

    const int64_t transactionId = 1234;
    const Vector<String> transactionScope;
    RefPtr<IDBTransaction> transaction = IDBTransaction::create(executionContext(), transactionId, transactionScope, IndexedDB::TransactionReadOnly, db.get());

    // Local reference, IDBDatabase's reference and IDBPendingTransactionMonitor's reference:
    EXPECT_EQ(3, transaction->refCount());

    RefPtr<IDBRequest> request = IDBRequest::create(executionContext(), IDBAny::createInvalid(), transaction.get());
    IDBPendingTransactionMonitor::deactivateNewTransactions();

    // Local reference, IDBDatabase's reference, and the IDBRequest's reference
    EXPECT_EQ(3, transaction->refCount());

    // This will generate an abort() call to the back end which is dropped by the fake proxy,
    // so an explicit onAbort call is made.
    executionContext()->stopActiveDOMObjects();
    transaction->onAbort(DOMError::create(AbortError, "Aborted"));

    EXPECT_EQ(1, transaction->refCount());
}

TEST_F(IDBTransactionTest, TransactionFinish)
{
    OwnPtr<FakeWebIDBDatabase> backend = FakeWebIDBDatabase::create();
    RefPtr<FakeIDBDatabaseCallbacks> connection = FakeIDBDatabaseCallbacks::create();
    RefPtr<IDBDatabase> db = IDBDatabase::create(executionContext(), backend.release(), connection);

    const int64_t transactionId = 1234;
    const Vector<String> transactionScope;
    RefPtr<IDBTransaction> transaction = IDBTransaction::create(executionContext(), transactionId, transactionScope, IndexedDB::TransactionReadOnly, db.get());

    // Local reference, IDBDatabase's reference and IDBPendingTransactionMonitor's reference:
    EXPECT_EQ(3, transaction->refCount());

    IDBPendingTransactionMonitor::deactivateNewTransactions();

    // Local reference, IDBDatabase's reference
    EXPECT_EQ(2, transaction->refCount());

    IDBTransaction* transactionPtr = transaction.get();
    transaction.clear();

    // IDBDatabase's reference
    EXPECT_EQ(1, transactionPtr->refCount());

    // Stop the context, so events don't get queued (which would keep the transaction alive).
    executionContext()->stopActiveDOMObjects();

    // Fire an abort to make sure this doesn't free the transaction during use. The test
    // will not fail if it is, but ASAN would notice the error.
    db->onAbort(transactionId, DOMError::create(AbortError, "Aborted"));
}

} // namespace