1 /*
2 * Copyright (c) 2021-2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <gtest/gtest.h>
17 #include "sampling.h"
18
19 using namespace testing::ext;
20
21 namespace {
22
23 class SamplerTest : public ::testing::Test {
24 public:
SetUpTestCase()25 static void SetUpTestCase() {}
TearDownTestCase()26 static void TearDownTestCase() {}
SetUp()27 void SetUp() {}
TearDown()28 void TearDown() {}
29 };
30
31 /*
32 * @tc.name: Sampler
33 * @tc.desc: test Sampler::InitSampling with normal case.
34 * @tc.type: FUNC
35 */
HWTEST_F(SamplerTest, InitSampling001, TestSize.Level1)36 HWTEST_F(SamplerTest, InitSampling001, TestSize.Level1)
37 {
38 Sampling sampler;
39 sampler.InitSampling(512);
40 EXPECT_EQ(sampler.StartSampling(1024), 1024u);
41 }
42
43 /*
44 * @tc.name: Sampler
45 * @tc.desc: test Sampler::InitSampling with abnormal case.
46 * @tc.type: FUNC
47 */
HWTEST_F(SamplerTest, InitSampling002, TestSize.Level1)48 HWTEST_F(SamplerTest, InitSampling002, TestSize.Level1)
49 {
50 Sampling sampler;
51 sampler.SetRandomEngineSeed(1);
52 sampler.InitSampling(512);
53 EXPECT_EQ(sampler.StartSampling(511), 512u);
54 }
55
56 /*
57 * @tc.name: Sampler
58 * @tc.desc: test Sampler::InitSampling with boundary case.
59 * @tc.type: FUNC
60 */
HWTEST_F(SamplerTest, InitSampling003, TestSize.Level1)61 HWTEST_F(SamplerTest, InitSampling003, TestSize.Level1)
62 {
63 Sampling sampler;
64 sampler.InitSampling(1);
65 EXPECT_EQ(sampler.StartSampling(1), 1u);
66 EXPECT_EQ(sampler.StartSampling(5), 5u);
67 EXPECT_EQ(sampler.StartSampling(9), 9u);
68 }
69
70 /*
71 * @tc.name: Sampler
72 * @tc.desc: test Sampler::Reset with normal case.
73 * @tc.type: FUNC
74 */
HWTEST_F(SamplerTest, Reset, TestSize.Level1)75 HWTEST_F(SamplerTest, Reset, TestSize.Level1)
76 {
77 Sampling sampler;
78 sampler.InitSampling(4096);
79 sampler.Reset();
80 EXPECT_EQ(sampler.GetSampleInterval(), 0);
81 }
82 } // namespace