1/*
2 * Copyright (C) 2015 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 "collectors/cpu_usage_collector.h"
20#include "metrics/metrics_library_mock.h"
21
22
23TEST(CpuUsageTest, ParseProcStat) {
24  MetricsLibraryMock metrics_lib_mock;
25  CpuUsageCollector collector(&metrics_lib_mock);
26  std::vector<std::string> invalid_contents = {
27    "",
28    // First line does not start with cpu.
29    "spu  17191 11 36579 151118 289 0 2 0 0 0\n"
30    "cpu0 1564 2 866 48650 68 0 2 0 0 0\n"
31    "cpu1 14299 0 35116 1844 81 0 0 0 0 0\n",
32    // One of the field is not a number.
33    "cpu  a17191 11 36579 151118 289 0 2 0 0 0",
34    // To many numbers in the first line.
35    "cpu  17191 11 36579 151118 289 0 2 0 0 0 102"
36  };
37
38  uint64_t user, nice, system;
39  for (int i = 0; i < invalid_contents.size(); i++) {
40    ASSERT_FALSE(collector.ParseProcStat(invalid_contents[i], &user, &nice,
41                                         &system));
42  }
43
44  ASSERT_TRUE(collector.ParseProcStat(
45      std::string("cpu  17191 11 36579 151118 289 0 2 0 0 0"),
46      &user, &nice, &system));
47  ASSERT_EQ(17191, user);
48  ASSERT_EQ(11, nice);
49  ASSERT_EQ(36579, system);
50}
51