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-rw-r--r--xpcom/tests/gtest/TestStringStream.cpp100
1 files changed, 100 insertions, 0 deletions
diff --git a/xpcom/tests/gtest/TestStringStream.cpp b/xpcom/tests/gtest/TestStringStream.cpp
new file mode 100644
index 0000000000..8314c3e74c
--- /dev/null
+++ b/xpcom/tests/gtest/TestStringStream.cpp
@@ -0,0 +1,100 @@
+/* -*- 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/gtest/MozAssertions.h"
+#include "nsICloneableInputStream.h"
+#include "nsStringStream.h"
+#include "nsTArray.h"
+#include "nsIInputStream.h"
+#include "nsCOMPtr.h"
+#include "nsStreamUtils.h"
+#include "mozilla/Span.h"
+#include "nsISeekableStream.h"
+
+namespace {
+
+static void TestStringStream(uint32_t aNumBytes) {
+ nsTArray<char> inputData;
+ testing::CreateData(aNumBytes, inputData);
+ nsDependentCSubstring inputString(inputData.Elements(), inputData.Length());
+
+ nsCOMPtr<nsIInputStream> stream;
+ nsresult rv = NS_NewCStringInputStream(getter_AddRefs(stream), inputString);
+ ASSERT_NS_SUCCEEDED(rv);
+
+ testing::ConsumeAndValidateStream(stream, inputString);
+}
+
+static void TestStringStreamClone(uint32_t aNumBytes) {
+ nsTArray<char> inputData;
+ testing::CreateData(aNumBytes, inputData);
+ nsDependentCSubstring inputString(inputData.Elements(), inputData.Length());
+
+ nsCOMPtr<nsIInputStream> stream;
+ nsresult rv = NS_NewCStringInputStream(getter_AddRefs(stream), inputString);
+ ASSERT_NS_SUCCEEDED(rv);
+
+ nsCOMPtr<nsICloneableInputStream> cloneable = do_QueryInterface(stream);
+ ASSERT_TRUE(cloneable != nullptr);
+ ASSERT_TRUE(cloneable->GetCloneable());
+
+ nsCOMPtr<nsIInputStream> clone;
+ rv = cloneable->Clone(getter_AddRefs(clone));
+
+ testing::ConsumeAndValidateStream(stream, inputString);
+
+ // Release the stream to verify that the clone's string survives correctly.
+ stream = nullptr;
+
+ testing::ConsumeAndValidateStream(clone, inputString);
+}
+
+} // namespace
+
+TEST(StringStream, Simple_4k)
+{ TestStringStream(1024 * 4); }
+
+TEST(StringStream, Clone_4k)
+{ TestStringStreamClone(1024 * 4); }
+
+static nsresult CloseStreamThenRead(nsIInputStream* aInStr, void* aClosure,
+ const char* aBuffer, uint32_t aOffset,
+ uint32_t aCount, uint32_t* aCountWritten) {
+ // Closing the stream will free the data
+ nsresult rv = aInStr->Close();
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ // This will likely be allocated in the same slot as what we have in aBuffer
+ char* newAlloc = moz_xstrdup("abcd");
+
+ char* toBuf = static_cast<char*>(aClosure);
+ memcpy(&toBuf[aOffset], aBuffer, aCount);
+ *aCountWritten = aCount;
+ free(newAlloc);
+ return NS_OK;
+}
+
+TEST(StringStream, CancelInReadSegments)
+{
+ char* buffer = moz_xstrdup("test");
+ nsCOMPtr<nsIInputStream> stream;
+ nsresult rv = NS_NewByteInputStream(
+ getter_AddRefs(stream), mozilla::Span(buffer, 5), NS_ASSIGNMENT_ADOPT);
+ ASSERT_NS_SUCCEEDED(rv);
+
+ char buf[100];
+ uint32_t count = 0;
+ uint64_t available = 0;
+ rv = stream->Available(&available);
+ ASSERT_NS_SUCCEEDED(rv);
+ rv = stream->ReadSegments(CloseStreamThenRead, buf, available, &count);
+ ASSERT_NS_SUCCEEDED(rv);
+ ASSERT_TRUE(count == 5);
+ ASSERT_TRUE(!strcmp(buf, "test"));
+}