[NaCl SDK] Support non blocking TCP/UDP

native_client_sdk/src/tests/nacl_io_test/fifo_test.cc

+/* Copyright (c) 2013 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#include "gtest/gtest.h"
+
+#include "nacl_io/fifo_char.h"
+#include "nacl_io/fifo_null.h"
+#include "nacl_io/fifo_packet.h"
+
+#include "ppapi_simple/ps.h"
+
+using namespace nacl_io;
+
+namespace {
+const size_t kTestSize = 32;
+const size_t kHalfSize = 16;
+const size_t kQuarterSize = 8;
+};
+
+TEST(FIFONull, Basic) {
+  FIFONull fifo;
+  EXPECT_FALSE(fifo.IsFull());
+  EXPECT_FALSE(fifo.IsEmpty());
+
+  EXPECT_LT(0, fifo.ReadAvailable());
+  EXPECT_LT(0, fifo.WriteAvailable());
+}
+
+TEST(FIFOChar, Wrap) {
+  char temp_wr[kTestSize * 2];
+  char temp_rd[kTestSize * 2];
+  size_t wr_offs = 0;
+  size_t rd_offs = 0;
+
+  FIFOChar fifo(kTestSize);
+
+  memset(temp_rd, 0, sizeof(temp_rd));
+  for (size_t index = 0; index < sizeof(temp_wr); index++)
+    temp_wr[index] = index;
+
+  EXPECT_TRUE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  // Wrap read and write differently, and verify copy is correct
+  EXPECT_EQ(0, fifo.ReadAvailable());
+  EXPECT_EQ(kTestSize, fifo.WriteAvailable());
+
+  wr_offs += fifo.Write(temp_wr, kHalfSize);
+  EXPECT_EQ(kHalfSize, wr_offs);
+
+  EXPECT_FALSE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  rd_offs += fifo.Read(temp_rd, kQuarterSize);
+  EXPECT_EQ(kQuarterSize, rd_offs);
+
+  EXPECT_FALSE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  wr_offs += fifo.Write(&temp_wr[wr_offs], kTestSize);
+  EXPECT_EQ(kTestSize + kQuarterSize, wr_offs);
+
+  EXPECT_FALSE(fifo.IsEmpty());
+
+  rd_offs += fifo.Read(&temp_rd[rd_offs], kTestSize);
+  EXPECT_EQ(kTestSize + kQuarterSize, rd_offs);
+
+  EXPECT_TRUE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  for (size_t index = 0; index < kQuarterSize + kTestSize; index++)
+    EXPECT_EQ((char) index, temp_rd[index]);
+}
+
+TEST(FIFOPacket, Packets) {
+  char temp_wr[kTestSize];
+  FIFOPacket fifo(kTestSize);
+
+  Packet* pkt0 = new Packet(temp_wr, kHalfSize, 0);
+  Packet* pkt1 = new Packet(temp_wr, kTestSize, 0);
+
+  EXPECT_TRUE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  EXPECT_EQ(0, fifo.ReadAvailable());
+  EXPECT_EQ(kTestSize, fifo.WriteAvailable());
+
+  fifo.WritePacket(pkt0);
+  EXPECT_FALSE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  EXPECT_EQ(kHalfSize, fifo.ReadAvailable());
+  EXPECT_EQ(kHalfSize, fifo.WriteAvailable());
+
+  fifo.WritePacket(pkt1);
+  EXPECT_FALSE(fifo.IsEmpty());
+  EXPECT_TRUE(fifo.IsFull());
+
+  EXPECT_EQ(kHalfSize + kTestSize, fifo.ReadAvailable());
+  EXPECT_EQ(0, fifo.WriteAvailable());
+
+  EXPECT_EQ(pkt0, fifo.ReadPacket());
+  EXPECT_FALSE(fifo.IsEmpty());
+  EXPECT_TRUE(fifo.IsFull());
+
+  EXPECT_EQ(kTestSize, fifo.ReadAvailable());
+  EXPECT_EQ(0, fifo.WriteAvailable());
+
+  EXPECT_EQ(pkt1, fifo.ReadPacket());
+
+  EXPECT_TRUE(fifo.IsEmpty());
+  EXPECT_FALSE(fifo.IsFull());
+
+  EXPECT_EQ(0, fifo.ReadAvailable());
+  EXPECT_EQ(kTestSize, fifo.WriteAvailable());
+
+}