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-rw-r--r--xpcom/tests/gtest/Helpers.cpp201
1 files changed, 201 insertions, 0 deletions
diff --git a/xpcom/tests/gtest/Helpers.cpp b/xpcom/tests/gtest/Helpers.cpp
new file mode 100644
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+++ b/xpcom/tests/gtest/Helpers.cpp
@@ -0,0 +1,201 @@
+/* -*- 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/. */
+
+/* Helper routines for xpcom gtests. */
+
+#include "Helpers.h"
+
+#include <algorithm>
+#include "gtest/gtest.h"
+#include "mozilla/gtest/MozAssertions.h"
+#include "nsIOutputStream.h"
+#include "nsStreamUtils.h"
+#include "nsTArray.h"
+#include "nsThreadUtils.h"
+
+namespace testing {
+
+// Populate an array with the given number of bytes. Data is lorem ipsum
+// random text, but deterministic across multiple calls.
+void CreateData(uint32_t aNumBytes, nsTArray<char>& aDataOut) {
+ static const char data[] =
+ "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec egestas "
+ "purus eu condimentum iaculis. In accumsan leo eget odio porttitor, non "
+ "rhoncus nulla vestibulum. Etiam lacinia consectetur nisl nec "
+ "sollicitudin. Sed fringilla accumsan diam, pulvinar varius massa. Duis "
+ "mollis dignissim felis, eget tempus nisi tristique ut. Fusce euismod, "
+ "lectus non lacinia tempor, tellus diam suscipit quam, eget hendrerit "
+ "lacus nunc fringilla ante. Sed ultrices massa vitae risus molestie, ut "
+ "finibus quam laoreet nullam.";
+ static const uint32_t dataLength = sizeof(data) - 1;
+
+ aDataOut.SetCapacity(aNumBytes);
+
+ while (aNumBytes > 0) {
+ uint32_t amount = std::min(dataLength, aNumBytes);
+ aDataOut.AppendElements(data, amount);
+ aNumBytes -= amount;
+ }
+}
+
+// Write the given number of bytes out to the stream. Loop until expected
+// bytes count is reached or an error occurs.
+void Write(nsIOutputStream* aStream, const nsTArray<char>& aData,
+ uint32_t aOffset, uint32_t aNumBytes) {
+ uint32_t remaining =
+ std::min(aNumBytes, static_cast<uint32_t>(aData.Length() - aOffset));
+
+ while (remaining > 0) {
+ uint32_t numWritten;
+ nsresult rv =
+ aStream->Write(aData.Elements() + aOffset, remaining, &numWritten);
+ ASSERT_NS_SUCCEEDED(rv);
+ if (numWritten < 1) {
+ break;
+ }
+ aOffset += numWritten;
+ remaining -= numWritten;
+ }
+}
+
+// Write the given number of bytes and then close the stream.
+void WriteAllAndClose(nsIOutputStream* aStream, const nsTArray<char>& aData) {
+ Write(aStream, aData, 0, aData.Length());
+ aStream->Close();
+}
+
+// Synchronously consume the given input stream and validate the resulting data
+// against the given array of expected values.
+void ConsumeAndValidateStream(nsIInputStream* aStream,
+ const nsTArray<char>& aExpectedData) {
+ nsDependentCSubstring data(aExpectedData.Elements(), aExpectedData.Length());
+ ConsumeAndValidateStream(aStream, data);
+}
+
+// Synchronously consume the given input stream and validate the resulting data
+// against the given string of expected values.
+void ConsumeAndValidateStream(nsIInputStream* aStream,
+ const nsACString& aExpectedData) {
+ nsAutoCString outputData;
+ nsresult rv = NS_ConsumeStream(aStream, UINT32_MAX, outputData);
+ ASSERT_NS_SUCCEEDED(rv);
+ ASSERT_EQ(aExpectedData.Length(), outputData.Length());
+ ASSERT_TRUE(aExpectedData.Equals(outputData));
+}
+
+NS_IMPL_ISUPPORTS(OutputStreamCallback, nsIOutputStreamCallback);
+
+OutputStreamCallback::OutputStreamCallback() : mCalled(false) {}
+
+OutputStreamCallback::~OutputStreamCallback() = default;
+
+NS_IMETHODIMP
+OutputStreamCallback::OnOutputStreamReady(nsIAsyncOutputStream* aStream) {
+ mCalled = true;
+ return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS(InputStreamCallback, nsIInputStreamCallback);
+
+InputStreamCallback::InputStreamCallback() : mCalled(false) {}
+
+InputStreamCallback::~InputStreamCallback() = default;
+
+NS_IMETHODIMP
+InputStreamCallback::OnInputStreamReady(nsIAsyncInputStream* aStream) {
+ mCalled = true;
+ return NS_OK;
+}
+
+AsyncStringStream::AsyncStringStream(const nsACString& aBuffer) {
+ NS_NewCStringInputStream(getter_AddRefs(mStream), aBuffer);
+}
+
+NS_IMETHODIMP
+AsyncStringStream::Available(uint64_t* aLength) {
+ return mStream->Available(aLength);
+}
+
+NS_IMETHODIMP
+AsyncStringStream::StreamStatus() { return mStream->StreamStatus(); }
+
+NS_IMETHODIMP
+AsyncStringStream::Read(char* aBuffer, uint32_t aCount, uint32_t* aReadCount) {
+ return mStream->Read(aBuffer, aCount, aReadCount);
+}
+
+NS_IMETHODIMP
+AsyncStringStream::ReadSegments(nsWriteSegmentFun aWriter, void* aClosure,
+ uint32_t aCount, uint32_t* aResult) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+AsyncStringStream::Close() {
+ nsresult rv = mStream->Close();
+ if (NS_SUCCEEDED(rv)) {
+ MaybeExecCallback(mCallback, mCallbackEventTarget);
+ }
+ return rv;
+}
+
+NS_IMETHODIMP
+AsyncStringStream::IsNonBlocking(bool* aNonBlocking) {
+ return mStream->IsNonBlocking(aNonBlocking);
+}
+
+NS_IMETHODIMP
+AsyncStringStream::CloseWithStatus(nsresult aStatus) { return Close(); }
+
+NS_IMETHODIMP
+AsyncStringStream::AsyncWait(nsIInputStreamCallback* aCallback, uint32_t aFlags,
+ uint32_t aRequestedCount,
+ nsIEventTarget* aEventTarget) {
+ if (aFlags & nsIAsyncInputStream::WAIT_CLOSURE_ONLY) {
+ mCallback = aCallback;
+ mCallbackEventTarget = aEventTarget;
+ return NS_OK;
+ }
+
+ MaybeExecCallback(aCallback, aEventTarget);
+ return NS_OK;
+}
+
+void AsyncStringStream::MaybeExecCallback(nsIInputStreamCallback* aCallback,
+ nsIEventTarget* aEventTarget) {
+ if (!aCallback) {
+ return;
+ }
+
+ nsCOMPtr<nsIInputStreamCallback> callback = aCallback;
+ nsCOMPtr<nsIAsyncInputStream> self = this;
+
+ nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
+ "AsyncWait", [callback, self]() { callback->OnInputStreamReady(self); });
+
+ if (aEventTarget) {
+ aEventTarget->Dispatch(r.forget());
+ } else {
+ r->Run();
+ }
+}
+
+NS_IMPL_ISUPPORTS(AsyncStringStream, nsIAsyncInputStream, nsIInputStream)
+
+NS_IMPL_ADDREF(LengthInputStream);
+NS_IMPL_RELEASE(LengthInputStream);
+
+NS_INTERFACE_MAP_BEGIN(LengthInputStream)
+ NS_INTERFACE_MAP_ENTRY(nsIInputStream)
+ NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIInputStreamLength, mIsInputStreamLength)
+ NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAsyncInputStreamLength,
+ mIsAsyncInputStreamLength)
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIInputStream)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_ISUPPORTS(LengthCallback, nsIInputStreamLengthCallback)
+
+} // namespace testing