1/*
2 * Copyright (C) 2024 HiHope Open Source Organization.
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 <sys/random.h>
18
19using namespace testing::ext;
20
21class HatsGetrandomTest : public testing::Test {
22public:
23    static void SetUpTestCase();
24    static void TearDownTestCase();
25    void SetUp();
26    void TearDown();
27private:
28};
29void HatsGetrandomTest::SetUp()
30{
31}
32void HatsGetrandomTest::TearDown()
33{
34}
35void HatsGetrandomTest::SetUpTestCase()
36{
37}
38void HatsGetrandomTest::TearDownTestCase()
39{
40}
41
42/*
43 * @tc.number : SUB_KERNEL_SYSCALL_GETRANDOM_0100
44 * @tc.name   : GetrandomFunctionalityTestSuccess_0001
45 * @tc.desc   : getrandom functionality test success.
46 * @tc.size   : MediumTest
47 * @tc.type   : Function
48 * @tc.level  : Level 1
49 */
50HWTEST_F(HatsGetrandomTest, GetrandomFunctionalityTestSuccess_0001, Function | MediumTest | Level1)
51{
52    size_t len = 256;
53    char buffer[len];
54    ssize_t ret = getrandom(buffer, len, 0);
55    EXPECT_EQ(ret, static_cast<ssize_t>(len));
56}
57
58/*
59 * @tc.number : SUB_KERNEL_SYSCALL_GETRANDOM_0200
60 * @tc.name   : GetrandomMultipleCallsConsistencySuccess_0002
61 * @tc.desc   : getrandom multiple calls consistency success.
62 * @tc.size   : MediumTest
63 * @tc.type   : Function
64 * @tc.level  : Level 1
65 */
66HWTEST_F(HatsGetrandomTest, GetrandomMultipleCallsConsistencySuccess_0002, Function | MediumTest | Level1)
67{
68    size_t len = 8;
69    char buffer1[len];
70    char buffer2[len];
71    ssize_t ret = 0;
72    ssize_t ret1 = 0;
73    ssize_t ret2 = 0;
74
75    ret1 = getrandom(buffer1, len, 0);
76    EXPECT_EQ(ret1, static_cast<ssize_t>(len));
77    ret2 = getrandom(buffer2, len, 0);
78    EXPECT_EQ(ret2, static_cast<ssize_t>(len));
79    ret = memcmp(buffer1, buffer2, len);
80    EXPECT_NE(ret, 0);
81}
82
83/*
84 * @tc.number : SUB_KERNEL_SYSCALL_GETRANDOM_0300
85 * @tc.name   : GetrandomInvalidParametersBuffFail_0003
86 * @tc.desc   : getrandom invalid parameters buffer address fail, return -1, and set errno.
87 * @tc.size   : MediumTest
88 * @tc.type   : Function
89 * @tc.level  : Level 2
90 */
91HWTEST_F(HatsGetrandomTest, GetrandomInvalidParametersBuffFail_0003, Function | MediumTest | Level2)
92{
93    size_t len = 10;
94
95    errno = 0;
96    ssize_t ret = getrandom(nullptr, len, 0);
97    EXPECT_EQ(ret, -1);
98    EXPECT_EQ(errno, EFAULT);
99}
100
101/*
102 * @tc.number : SUB_KERNEL_SYSCALL_GETRANDOM_0400
103 * @tc.name   : GetrandomInvalidParametersFlagFail_0004
104 * @tc.desc   : getrandom invalid parameters flag fail, return -1, and set errno.
105 * @tc.size   : MediumTest
106 * @tc.type   : Function
107 * @tc.level  : Level 2
108 */
109HWTEST_F(HatsGetrandomTest, GetrandomInvalidParametersFlagFail_0004, Function | MediumTest | Level2)
110{
111    size_t len = 32;
112    char buffer[len];
113    ssize_t invalidFlag = -1;
114
115    errno = 0;
116    ssize_t ret = getrandom(buffer, len, invalidFlag);
117    EXPECT_EQ(ret, -1);
118    EXPECT_EQ(errno, EINVAL);
119}
120
121/*
122 * @tc.number : SUB_KERNEL_SYSCALL_GETRANDOM_0500
123 * @tc.name   : GetrandomGRND_RANDOMFlagSuccess_0005
124 * @tc.desc   : getrandom use GRND_RANDOM flag success.
125 * @tc.size   : MediumTest
126 * @tc.type   : Function
127 * @tc.level  : Level 1
128 */
129HWTEST_F(HatsGetrandomTest, GetrandomGRND_RANDOMFlagSuccess_0005, Function | MediumTest | Level1)
130{
131    size_t len = 256;
132    char buffer[len];
133    ssize_t ret = getrandom(buffer, len, GRND_RANDOM | GRND_NONBLOCK);
134    EXPECT_EQ(ret, static_cast<ssize_t>(len));
135}
136