summaryrefslogtreecommitdiffstats
path: root/dom/media/gtest/TestBufferReader.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--dom/media/gtest/TestBufferReader.cpp53
1 files changed, 53 insertions, 0 deletions
diff --git a/dom/media/gtest/TestBufferReader.cpp b/dom/media/gtest/TestBufferReader.cpp
new file mode 100644
index 0000000000..827e55335d
--- /dev/null
+++ b/dom/media/gtest/TestBufferReader.cpp
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "BufferReader.h"
+
+using namespace mozilla;
+
+TEST(BufferReader, ReaderCursor)
+{
+ // Allocate a buffer and create a BufferReader.
+ const size_t BUFFER_SIZE = 10;
+ uint8_t buffer[BUFFER_SIZE] = {0};
+
+ const uint8_t* const HEAD = reinterpret_cast<uint8_t*>(buffer);
+ const uint8_t* const TAIL = HEAD + BUFFER_SIZE;
+
+ BufferReader reader(HEAD, BUFFER_SIZE);
+ ASSERT_EQ(reader.Offset(), static_cast<size_t>(0));
+ ASSERT_EQ(reader.Peek(BUFFER_SIZE), HEAD);
+
+ // Keep reading to the end, and make sure the final read failed.
+ const size_t READ_SIZE = 4;
+ ASSERT_NE(BUFFER_SIZE % READ_SIZE, static_cast<size_t>(0));
+ for (const uint8_t* ptr = reader.Peek(0); ptr != nullptr;
+ ptr = reader.Read(READ_SIZE)) {
+ }
+
+ // Check the reading cursor of the BufferReader is correct
+ // after reading and seeking.
+ const uint8_t* tail = reader.Peek(0);
+ const uint8_t* head = reader.Seek(0);
+
+ EXPECT_EQ(head, HEAD);
+ EXPECT_EQ(tail, TAIL);
+}
+
+TEST(BufferReader, UnalignedRead)
+{
+ // Allocate a buffer and create a BufferReader.
+ const size_t BUFFER_SIZE = 5;
+ uint8_t buffer[BUFFER_SIZE] = {0};
+
+ const uint8_t* const HEAD = reinterpret_cast<uint8_t*>(buffer);
+
+ BufferReader reader(HEAD, BUFFER_SIZE);
+ // adjust the offset so that it's unaligned
+ reader.Read(1);
+ // read an int which needs 4 byte alignment
+ reader.ReadType<uint32_t>();
+}