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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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xpcom/tests/gtest/TestCloneInputStream.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 "gtest/gtest.h"
#include "Helpers.h"
#include "mozilla/Unused.h"
#include "nsICloneableInputStream.h"
#include "nsIMultiplexInputStream.h"
#include "nsNetUtil.h"
#include "nsStreamUtils.h"
#include "nsStringStream.h"
#include "nsComponentManagerUtils.h"
TEST(CloneInputStream, InvalidInput)
{
nsCOMPtr<nsIInputStream> clone;
nsresult rv = NS_CloneInputStream(nullptr, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
ASSERT_FALSE(clone);
}
TEST(CloneInputStream, CloneableInput)
{
nsTArray<char> inputData;
testing::CreateData(4 * 1024, inputData);
nsDependentCSubstring inputString(inputData.Elements(), inputData.Length());
nsCOMPtr<nsIInputStream> stream;
nsresult rv = NS_NewCStringInputStream(getter_AddRefs(stream), inputString);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIInputStream> clone;
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_SUCCEEDED(rv));
testing::ConsumeAndValidateStream(stream, inputString);
testing::ConsumeAndValidateStream(clone, inputString);
}
TEST(CloneInputStream, NonCloneableInput_NoFallback)
{
nsTArray<char> inputData;
testing::CreateData(4 * 1024, inputData);
nsDependentCSubstring inputString(inputData.Elements(), inputData.Length());
nsCOMPtr<nsIInputStream> base;
nsresult rv = NS_NewCStringInputStream(getter_AddRefs(base), inputString);
ASSERT_TRUE(NS_SUCCEEDED(rv));
// Take advantage of nsBufferedInputStream being non-cloneable right
// now. If this changes in the future, then we need a different stream
// type in this test.
nsCOMPtr<nsIInputStream> stream;
rv = NS_NewBufferedInputStream(getter_AddRefs(stream), base, 4096);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsICloneableInputStream> cloneable = do_QueryInterface(stream);
ASSERT_TRUE(cloneable == nullptr);
nsCOMPtr<nsIInputStream> clone;
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
ASSERT_TRUE(clone == nullptr);
testing::ConsumeAndValidateStream(stream, inputString);
}
TEST(CloneInputStream, NonCloneableInput_Fallback)
{
nsTArray<char> inputData;
testing::CreateData(4 * 1024, inputData);
nsDependentCSubstring inputString(inputData.Elements(), inputData.Length());
nsCOMPtr<nsIInputStream> base;
nsresult rv = NS_NewCStringInputStream(getter_AddRefs(base), inputString);
ASSERT_TRUE(NS_SUCCEEDED(rv));
// Take advantage of nsBufferedInputStream being non-cloneable right
// now. If this changes in the future, then we need a different stream
// type in this test.
nsCOMPtr<nsIInputStream> stream;
rv = NS_NewBufferedInputStream(getter_AddRefs(stream), base, 4096);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsICloneableInputStream> cloneable = do_QueryInterface(stream);
ASSERT_TRUE(cloneable == nullptr);
nsCOMPtr<nsIInputStream> clone;
nsCOMPtr<nsIInputStream> replacement;
rv = NS_CloneInputStream(stream, getter_AddRefs(clone),
getter_AddRefs(replacement));
ASSERT_TRUE(NS_SUCCEEDED(rv));
ASSERT_TRUE(clone != nullptr);
ASSERT_TRUE(replacement != nullptr);
ASSERT_TRUE(stream.get() != replacement.get());
ASSERT_TRUE(clone.get() != replacement.get());
stream = replacement.forget();
// The stream is being copied asynchronously on the STS event target. Spin
// a yield loop here until the data is available. Yes, this is a bit hacky,
// but AFAICT, gtest does not support async test completion.
uint64_t available;
do {
mozilla::Unused << PR_Sleep(PR_INTERVAL_NO_WAIT);
rv = stream->Available(&available);
ASSERT_TRUE(NS_SUCCEEDED(rv));
} while(available < inputString.Length());
testing::ConsumeAndValidateStream(stream, inputString);
testing::ConsumeAndValidateStream(clone, inputString);
}
TEST(CloneInputStream, CloneMultiplexStream)
{
nsCOMPtr<nsIMultiplexInputStream> stream =
do_CreateInstance("@mozilla.org/io/multiplex-input-stream;1");
ASSERT_TRUE(stream);
nsTArray<char> inputData;
testing::CreateData(1024, inputData);
for (uint32_t i = 0; i < 2; ++i) {
nsCString inputString(inputData.Elements(), inputData.Length());
nsCOMPtr<nsIInputStream> base;
nsresult rv = NS_NewCStringInputStream(getter_AddRefs(base), inputString);
ASSERT_TRUE(NS_SUCCEEDED(rv));
rv = stream->AppendStream(base);
ASSERT_TRUE(NS_SUCCEEDED(rv));
}
// Unread stream should clone successfully.
nsTArray<char> doubled;
doubled.AppendElements(inputData);
doubled.AppendElements(inputData);
nsCOMPtr<nsIInputStream> clone;
nsresult rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_SUCCEEDED(rv));
testing::ConsumeAndValidateStream(clone, doubled);
// Stream that has been read should fail.
char buffer[512];
uint32_t read;
rv = stream->Read(buffer, 512, &read);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIInputStream> clone2;
rv = NS_CloneInputStream(stream, getter_AddRefs(clone2));
ASSERT_TRUE(NS_FAILED(rv));
}
TEST(CloneInputStream, CloneMultiplexStreamPartial)
{
nsCOMPtr<nsIMultiplexInputStream> stream =
do_CreateInstance("@mozilla.org/io/multiplex-input-stream;1");
ASSERT_TRUE(stream);
nsTArray<char> inputData;
testing::CreateData(1024, inputData);
for (uint32_t i = 0; i < 2; ++i) {
nsCString inputString(inputData.Elements(), inputData.Length());
nsCOMPtr<nsIInputStream> base;
nsresult rv = NS_NewCStringInputStream(getter_AddRefs(base), inputString);
ASSERT_TRUE(NS_SUCCEEDED(rv));
rv = stream->AppendStream(base);
ASSERT_TRUE(NS_SUCCEEDED(rv));
}
// Fail when first stream read, but second hasn't been started.
char buffer[1024];
uint32_t read;
nsresult rv = stream->Read(buffer, 1024, &read);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIInputStream> clone;
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
// Fail after beginning read of second stream.
rv = stream->Read(buffer, 512, &read);
ASSERT_TRUE(NS_SUCCEEDED(rv) && read == 512);
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
// Fail at the end.
nsAutoCString consumed;
rv = NS_ConsumeStream(stream, UINT32_MAX, consumed);
ASSERT_TRUE(NS_SUCCEEDED(rv));
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
}