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diff --git a/o3d/command_buffer/service/cmd_parser_test.cc b/o3d/command_buffer/service/cmd_parser_test.cc
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+++ b/o3d/command_buffer/service/cmd_parser_test.cc
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+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+// Tests for the command parser.
+
+#include "tests/common/win/testing_common.h"
+#include "command_buffer/service/cmd_parser.h"
+#include "command_buffer/service/mocks.h"
+#include "base/scoped_ptr.h"
+
+namespace command_buffer {
+
+using testing::Return;
+using testing::Mock;
+using testing::Truly;
+using testing::Sequence;
+using testing::_;
+
+// Test fixture for CommandParser test - Creates a mock AsyncAPIInterface, and
+// a fixed size memory buffer. Also provides a simple API to create a
+// CommandParser.
+class CommandParserTest : public testing::Test {
+ protected:
+  virtual void SetUp() {
+    api_mock_.reset(new AsyncAPIMock);
+    buffer_entry_count_ = 20;
+    buffer_.reset(new CommandBufferEntry[buffer_entry_count_]);
+  }
+  virtual void TearDown() {}
+
+  // Adds a DoCommand expectation in the mock.
+  void AddDoCommandExpect(parse_error::ParseError _return,
+                          unsigned int command,
+                          unsigned int arg_count,
+                          CommandBufferEntry *args) {
+    EXPECT_CALL(*api_mock(), DoCommand(command, arg_count,
+        Truly(AsyncAPIMock::IsArgs(arg_count, args))))
+        .InSequence(sequence_)
+        .WillOnce(Return(_return));
+  }
+
+  // Creates a parser, with a buffer of the specified size (in entries).
+  CommandParser *MakeParser(unsigned int entry_count) {
+    size_t shm_size = buffer_entry_count_ *
+                      sizeof(CommandBufferEntry);  // NOLINT
+    size_t command_buffer_size = entry_count *
+                                 sizeof(CommandBufferEntry);  // NOLINT
+    DCHECK_LE(command_buffer_size, shm_size);
+    return new CommandParser(buffer(),
+                             shm_size,
+                             0,
+                             command_buffer_size,
+                             0,
+                             api_mock());
+  }
+
+  unsigned int buffer_entry_count() { return 20; }
+  AsyncAPIMock *api_mock() { return api_mock_.get(); }
+  CommandBufferEntry *buffer() { return buffer_.get(); }
+ private:
+  unsigned int buffer_entry_count_;
+  scoped_ptr<AsyncAPIMock> api_mock_;
+  scoped_array<CommandBufferEntry> buffer_;
+  Sequence sequence_;
+};
+
+// Tests initialization conditions.
+TEST_F(CommandParserTest, TestInit) {
+  scoped_ptr<CommandParser> parser(MakeParser(10));
+  EXPECT_EQ(0u, parser->get());
+  EXPECT_EQ(0u, parser->put());
+  EXPECT_TRUE(parser->IsEmpty());
+}
+
+// Tests simple commands.
+TEST_F(CommandParserTest, TestSimple) {
+  scoped_ptr<CommandParser> parser(MakeParser(10));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // add a single command, no args
+  header.size = 1;
+  header.command = 123;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  AddDoCommandExpect(parse_error::kParseNoError, 123, 0, NULL);
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add a single command, 2 args
+  header.size = 3;
+  header.command = 456;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 2134;
+  buffer()[put++].value_float = 1.f;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  CommandBufferEntry param_array[2];
+  param_array[0].value_int32 = 2134;
+  param_array[1].value_float = 1.f;
+  AddDoCommandExpect(parse_error::kParseNoError, 456, 2, param_array);
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+// Tests having multiple commands in the buffer.
+TEST_F(CommandParserTest, TestMultipleCommands) {
+  scoped_ptr<CommandParser> parser(MakeParser(10));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // add 2 commands, test with single ProcessCommand()
+  header.size = 2;
+  header.command = 789;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 5151;
+
+  CommandBufferOffset put_cmd2 = put;
+  header.size = 2;
+  header.command = 2121;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 3434;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  CommandBufferEntry param_array[2];
+  param_array[0].value_int32 = 5151;
+  AddDoCommandExpect(parse_error::kParseNoError, 789, 1, param_array);
+  param_array[1].value_int32 = 3434;
+  AddDoCommandExpect(parse_error::kParseNoError, 2121, 1,
+                     param_array+1);
+
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put_cmd2, parser->get());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add 2 commands again, test with ProcessAllCommands()
+  header.size = 2;
+  header.command = 4545;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 5656;
+
+  header.size = 2;
+  header.command = 6767;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 7878;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  param_array[0].value_int32 = 5656;
+  AddDoCommandExpect(parse_error::kParseNoError, 4545, 1, param_array);
+  param_array[1].value_int32 = 7878;
+  AddDoCommandExpect(parse_error::kParseNoError, 6767, 1,
+                     param_array+1);
+
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+// Tests that the parser will wrap correctly at the end of the buffer.
+TEST_F(CommandParserTest, TestWrap) {
+  scoped_ptr<CommandParser> parser(MakeParser(5));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // add 3 commands with no args (1 word each)
+  for (unsigned int i = 0; i < 3; ++i) {
+    header.size = 1;
+    header.command = i;
+    buffer()[put++].value_header = header;
+    AddDoCommandExpect(parse_error::kParseNoError, i, 0, NULL);
+  }
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add 1 command with 1 arg (2 words). That should put us at the end of the
+  // buffer.
+  header.size = 2;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 5;
+  CommandBufferEntry param;
+  param.value_int32 = 5;
+  AddDoCommandExpect(parse_error::kParseNoError, 3, 1, &param);
+
+  DCHECK_EQ(5u, put);
+  put = 0;
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add 1 command with 1 arg (2 words).
+  header.size = 2;
+  header.command = 4;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 6;
+  param.value_int32 = 6;
+  AddDoCommandExpect(parse_error::kParseNoError, 4, 1, &param);
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+// Tests error conditions.
+TEST_F(CommandParserTest, TestError) {
+  scoped_ptr<CommandParser> parser(MakeParser(5));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // Generate a command with size 0.
+  header.size = 0;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseInvalidSize,
+            parser->ProcessAllCommands());
+  // check that no DoCommand call was made.
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  parser.reset(MakeParser(5));
+  put = parser->put();
+
+  // Generate a command with size 6, extends beyond the end of the buffer.
+  header.size = 6;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseOutOfBounds,
+            parser->ProcessAllCommands());
+  // check that no DoCommand call was made.
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  parser.reset(MakeParser(5));
+  put = parser->put();
+
+  // Generates 2 commands.
+  header.size = 1;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+  CommandBufferOffset put_post_fail = put;
+  header.size = 1;
+  header.command = 4;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  // have the first command fail to parse.
+  AddDoCommandExpect(parse_error::kParseUnknownCommand, 3, 0, NULL);
+  EXPECT_EQ(parse_error::kParseUnknownCommand,
+            parser->ProcessAllCommands());
+  // check that only one command was executed, and that get reflects that
+  // correctly.
+  EXPECT_EQ(put_post_fail, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+  // make the second one succeed, and check that the parser recovered fine.
+  AddDoCommandExpect(parse_error::kParseNoError, 4, 0, NULL);
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+}  // namespace command_buffer