platform_bionic/tests/sys_sysinfo_test.cpp

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <gtest/gtest.h>

#include <sys/sysinfo.h>
#include <unistd.h>

TEST(sys_sysinfo, smoke) {
  int nprocs = get_nprocs();
  ASSERT_GT(nprocs, 0);
  ASSERT_EQ(sysconf(_SC_NPROCESSORS_ONLN), nprocs);

  int nprocs_conf = get_nprocs_conf();
  ASSERT_GE(nprocs_conf, nprocs);
  ASSERT_EQ(sysconf(_SC_NPROCESSORS_CONF), nprocs_conf);

  long phys_pages = get_phys_pages();
  long avail_phys_pages = get_avphys_pages();

  ASSERT_GE(phys_pages, avail_phys_pages);
  ASSERT_EQ(sysconf(_SC_PHYS_PAGES), phys_pages);

  ASSERT_GT(avail_phys_pages, 0);
  ASSERT_GE(phys_pages, sysconf(_SC_AVPHYS_PAGES));
}

TEST(sys_sysinfo, sysinfo) {
  struct sysinfo si;
  memset(&si, 0, sizeof(si));
  ASSERT_EQ(0, sysinfo(&si));

  ASSERT_GT(static_cast<long>(si.uptime), 10);  // You're not running CTS within 10s of booting!
  ASSERT_GT(uint64_t(si.totalram) * si.mem_unit, uint64_t(512 * 1024 * 1024));
  ASSERT_GE(si.totalram, si.freeram);
  ASSERT_GE(si.totalswap, si.freeswap);
  ASSERT_GT(si.procs, 2);  // There's at least this test and init running!
}