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
19using namespace testing::ext;
20
21namespace {
22
23class SamplerTest : public ::testing::Test {
24public:
25    static void SetUpTestCase() {}
26    static void TearDownTestCase() {}
27    void SetUp() {}
28    void TearDown() {}
29};
30
31/*
32 * @tc.name: Sampler
33 * @tc.desc: test Sampler::InitSampling with normal case.
34 * @tc.type: FUNC
35 */
36HWTEST_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 */
48HWTEST_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 */
61HWTEST_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 */
75HWTEST_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