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#include "gtest/gtest.h"
#include "nsIStreamTransportService.h"
#include "nsStreamUtils.h"
#include "nsThreadUtils.h"
#include "Helpers.h"
static NS_DEFINE_CID(kStreamTransportServiceCID, NS_STREAMTRANSPORTSERVICE_CID);
void CreateStream(already_AddRefed<nsIInputStream> aSource,
nsIAsyncInputStream** aStream) {
nsCOMPtr<nsIInputStream> source = std::move(aSource);
nsresult rv;
nsCOMPtr<nsIStreamTransportService> sts =
do_GetService(kStreamTransportServiceCID, &rv);
ASSERT_EQ(NS_OK, rv);
nsCOMPtr<nsITransport> transport;
rv = sts->CreateInputTransport(source, true, getter_AddRefs(transport));
ASSERT_EQ(NS_OK, rv);
nsCOMPtr<nsIInputStream> wrapper;
rv = transport->OpenInputStream(0, 0, 0, getter_AddRefs(wrapper));
ASSERT_EQ(NS_OK, rv);
nsCOMPtr<nsIAsyncInputStream> asyncStream = do_QueryInterface(wrapper);
MOZ_ASSERT(asyncStream);
asyncStream.forget(aStream);
}
class BlockingSyncStream final : public nsIInputStream {
nsCOMPtr<nsIInputStream> mStream;
public:
NS_DECL_THREADSAFE_ISUPPORTS
explicit BlockingSyncStream(const nsACString& aBuffer) {
NS_NewCStringInputStream(getter_AddRefs(mStream), aBuffer);
}
NS_IMETHOD
Available(uint64_t* aLength) override { return mStream->Available(aLength); }
NS_IMETHOD
Read(char* aBuffer, uint32_t aCount, uint32_t* aReadCount) override {
return mStream->Read(aBuffer, aCount, aReadCount);
}
NS_IMETHOD
ReadSegments(nsWriteSegmentFun aWriter, void* aClosure, uint32_t aCount,
uint32_t* aResult) override {
return mStream->ReadSegments(aWriter, aClosure, aCount, aResult);
}
NS_IMETHOD
Close() override { return mStream->Close(); }
NS_IMETHOD
IsNonBlocking(bool* aNonBlocking) override {
*aNonBlocking = false;
return NS_OK;
}
private:
~BlockingSyncStream() = default;
};
NS_IMPL_ISUPPORTS(BlockingSyncStream, nsIInputStream)
// Testing a simple blocking stream.
TEST(TestInputStreamTransport, BlockingNotAsync)
{
RefPtr<BlockingSyncStream> stream = new BlockingSyncStream("Hello world"_ns);
nsCOMPtr<nsIAsyncInputStream> ais;
CreateStream(stream.forget(), getter_AddRefs(ais));
ASSERT_TRUE(!!ais);
nsAutoCString data;
nsresult rv = NS_ReadInputStreamToString(ais, data, -1);
ASSERT_EQ(NS_OK, rv);
ASSERT_TRUE(data.EqualsLiteral("Hello world"));
}
class BlockingAsyncStream final : public nsIAsyncInputStream {
nsCOMPtr<nsIInputStream> mStream;
bool mPending;
public:
NS_DECL_THREADSAFE_ISUPPORTS
explicit BlockingAsyncStream(const nsACString& aBuffer) : mPending(false) {
NS_NewCStringInputStream(getter_AddRefs(mStream), aBuffer);
}
NS_IMETHOD
Available(uint64_t* aLength) override {
mStream->Available(aLength);
// 1 char at the time, just to test the asyncWait+Read loop a bit more.
if (*aLength > 0) {
*aLength = 1;
}
return NS_OK;
}
NS_IMETHOD
Read(char* aBuffer, uint32_t aCount, uint32_t* aReadCount) override {
mPending = !mPending;
if (mPending) {
return NS_BASE_STREAM_WOULD_BLOCK;
}
// 1 char at the time, just to test the asyncWait+Read loop a bit more.
aCount = 1;
return mStream->Read(aBuffer, aCount, aReadCount);
}
NS_IMETHOD
ReadSegments(nsWriteSegmentFun aWriter, void* aClosure, uint32_t aCount,
uint32_t* aResult) override {
mPending = !mPending;
if (mPending) {
return NS_BASE_STREAM_WOULD_BLOCK;
}
// 1 char at the time, just to test the asyncWait+Read loop a bit more.
aCount = 1;
return mStream->ReadSegments(aWriter, aClosure, aCount, aResult);
}
NS_IMETHOD
Close() override { return mStream->Close(); }
NS_IMETHOD
IsNonBlocking(bool* aNonBlocking) override {
*aNonBlocking = false;
return NS_OK;
}
NS_IMETHOD
CloseWithStatus(nsresult aStatus) override { return Close(); }
NS_IMETHOD
AsyncWait(nsIInputStreamCallback* aCallback, uint32_t aFlags,
uint32_t aRequestedCount, nsIEventTarget* aEventTarget) override {
RefPtr<BlockingAsyncStream> self = this;
nsCOMPtr<nsIInputStreamCallback> callback = aCallback;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
"gtest-asyncwait",
[self, callback]() { callback->OnInputStreamReady(self); });
if (aEventTarget) {
aEventTarget->Dispatch(r.forget());
} else {
r->Run();
}
return NS_OK;
}
private:
~BlockingAsyncStream() = default;
};
NS_IMPL_ISUPPORTS(BlockingAsyncStream, nsIInputStream, nsIAsyncInputStream)
// Testing an async blocking stream.
TEST(TestInputStreamTransport, BlockingAsync)
{
RefPtr<BlockingAsyncStream> stream =
new BlockingAsyncStream("Hello world"_ns);
nsCOMPtr<nsIAsyncInputStream> ais;
CreateStream(stream.forget(), getter_AddRefs(ais));
ASSERT_TRUE(!!ais);
nsAutoCString data;
nsresult rv = NS_ReadInputStreamToString(ais, data, -1);
ASSERT_EQ(NS_OK, rv);
ASSERT_TRUE(data.EqualsLiteral("Hello world"));
}
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