sys_select_test.cpp revision 5b9310e502003e584bcb3a028ca3db7aa4d3f01b 
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include <errno.h>
20#include <stdlib.h>
21#include <sys/select.h>
22
23TEST(sys_select, fd_set_smoke) {
24  fd_set fds;
25  FD_ZERO(&fds);
26
27  for (size_t i = 0; i < 1024; ++i) {
28    EXPECT_FALSE(FD_ISSET(i, &fds));
29  }
30
31  FD_SET(0, &fds);
32  EXPECT_TRUE(FD_ISSET(0, &fds));
33  EXPECT_FALSE(FD_ISSET(1, &fds));
34  FD_SET(1, &fds);
35  EXPECT_TRUE(FD_ISSET(0, &fds));
36  EXPECT_TRUE(FD_ISSET(1, &fds));
37  FD_CLR(0, &fds);
38  EXPECT_FALSE(FD_ISSET(0, &fds));
39  EXPECT_TRUE(FD_ISSET(1, &fds));
40  FD_CLR(1, &fds);
41  EXPECT_FALSE(FD_ISSET(0, &fds));
42  EXPECT_FALSE(FD_ISSET(1, &fds));
43}
44