1//
2// Copyright (C) 2012 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 "update_engine/common/cpu_limiter.h"
18
19#include <gtest/gtest.h>
20
21namespace chromeos_update_engine {
22
23class CPULimiterTest : public ::testing::Test {};
24
25namespace {
26// Compares cpu shares and returns an integer that is less
27// than, equal to or greater than 0 if |shares_lhs| is,
28// respectively, lower than, same as or higher than |shares_rhs|.
29int CompareCpuShares(CpuShares shares_lhs, CpuShares shares_rhs) {
30  return static_cast<int>(shares_lhs) - static_cast<int>(shares_rhs);
31}
32}  // namespace
33
34// Tests the CPU shares enum is in the order we expect it.
35TEST(CPULimiterTest, CompareCpuSharesTest) {
36  EXPECT_LT(CompareCpuShares(CpuShares::kLow, CpuShares::kNormal), 0);
37  EXPECT_GT(CompareCpuShares(CpuShares::kNormal, CpuShares::kLow), 0);
38  EXPECT_EQ(CompareCpuShares(CpuShares::kNormal, CpuShares::kNormal), 0);
39  EXPECT_GT(CompareCpuShares(CpuShares::kHigh, CpuShares::kNormal), 0);
40}
41
42}  // namespace chromeos_update_engine
43