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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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131
xpcom/tests/gtest/TestStorageStream.cpp Normal file
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 <stdlib.h>
#include "gtest/gtest.h"
#include "Helpers.h"
#include "nsCOMPtr.h"
#include "nsICloneableInputStream.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
#include "nsIStorageStream.h"
#include "nsTArray.h"
namespace {
void
WriteData(nsIOutputStream* aOut, nsTArray<char>& aData, uint32_t aNumBytes,
nsACString& aDataWritten)
{
uint32_t n;
nsresult rv = aOut->Write(aData.Elements(), aNumBytes, &n);
EXPECT_TRUE(NS_SUCCEEDED(rv));
aDataWritten.Append(aData.Elements(), aNumBytes);
}
} // namespace
TEST(StorageStreams, Main)
{
// generate some test data we will write in 4k chunks to the stream
nsTArray<char> kData;
testing::CreateData(4096, kData);
// track how much data was written so we can compare at the end
nsAutoCString dataWritten;
nsresult rv;
nsCOMPtr<nsIStorageStream> stor;
rv = NS_NewStorageStream(kData.Length(), UINT32_MAX, getter_AddRefs(stor));
EXPECT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIOutputStream> out;
rv = stor->GetOutputStream(0, getter_AddRefs(out));
EXPECT_TRUE(NS_SUCCEEDED(rv));
WriteData(out, kData, kData.Length(), dataWritten);
WriteData(out, kData, kData.Length(), dataWritten);
rv = out->Close();
EXPECT_TRUE(NS_SUCCEEDED(rv));
out = nullptr;
nsCOMPtr<nsIInputStream> in;
rv = stor->NewInputStream(0, getter_AddRefs(in));
EXPECT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsICloneableInputStream> cloneable = do_QueryInterface(in);
ASSERT_TRUE(cloneable != nullptr);
ASSERT_TRUE(cloneable->GetCloneable());
nsCOMPtr<nsIInputStream> clone;
rv = cloneable->Clone(getter_AddRefs(clone));
testing::ConsumeAndValidateStream(in, dataWritten);
testing::ConsumeAndValidateStream(clone, dataWritten);
in = nullptr;
clone = nullptr;
// now, write 3 more full 4k segments + 11 bytes, starting at 8192
// total written equals 20491 bytes
rv = stor->GetOutputStream(dataWritten.Length(), getter_AddRefs(out));
EXPECT_TRUE(NS_SUCCEEDED(rv));
WriteData(out, kData, kData.Length(), dataWritten);
WriteData(out, kData, kData.Length(), dataWritten);
WriteData(out, kData, kData.Length(), dataWritten);
WriteData(out, kData, 11, dataWritten);
rv = out->Close();
EXPECT_TRUE(NS_SUCCEEDED(rv));
out = nullptr;
// now, read all
rv = stor->NewInputStream(0, getter_AddRefs(in));
EXPECT_TRUE(NS_SUCCEEDED(rv));
testing::ConsumeAndValidateStream(in, dataWritten);
in = nullptr;
}
TEST(StorageStreams, EarlyInputStream)
{
// generate some test data we will write in 4k chunks to the stream
nsTArray<char> kData;
testing::CreateData(4096, kData);
// track how much data was written so we can compare at the end
nsAutoCString dataWritten;
nsresult rv;
nsCOMPtr<nsIStorageStream> stor;
rv = NS_NewStorageStream(kData.Length(), UINT32_MAX, getter_AddRefs(stor));
EXPECT_TRUE(NS_SUCCEEDED(rv));
// Get input stream before writing data into the output stream
nsCOMPtr<nsIInputStream> in;
rv = stor->NewInputStream(0, getter_AddRefs(in));
EXPECT_TRUE(NS_SUCCEEDED(rv));
// Write data to output stream
nsCOMPtr<nsIOutputStream> out;
rv = stor->GetOutputStream(0, getter_AddRefs(out));
EXPECT_TRUE(NS_SUCCEEDED(rv));
WriteData(out, kData, kData.Length(), dataWritten);
WriteData(out, kData, kData.Length(), dataWritten);
rv = out->Close();
EXPECT_TRUE(NS_SUCCEEDED(rv));
out = nullptr;
// Should be able to consume input stream
testing::ConsumeAndValidateStream(in, dataWritten);
in = nullptr;
}