1#include <gtest/gtest.h>
2
3#include "osi/include/osi.h"
4#include "osi/include/ringbuffer.h"
5
6TEST(RingbufferTest, test_new_simple) {
7  ringbuffer_t* rb = ringbuffer_init(4096);
8  ASSERT_TRUE(rb != NULL);
9  EXPECT_EQ((size_t)4096, ringbuffer_available(rb));
10  EXPECT_EQ((size_t)0, ringbuffer_size(rb));
11  ringbuffer_free(rb);
12}
13
14TEST(RingbufferTest, test_insert_basic) {
15  ringbuffer_t* rb = ringbuffer_init(16);
16
17  uint8_t buffer[10] = {0x01, 0x02, 0x03, 0x04, 0x05,
18                        0x06, 0x07, 0x08, 0x09, 0x0A};
19  ringbuffer_insert(rb, buffer, 10);
20  EXPECT_EQ((size_t)10, ringbuffer_size(rb));
21  EXPECT_EQ((size_t)6, ringbuffer_available(rb));
22
23  uint8_t peek[10] = {0};
24  size_t peeked = ringbuffer_peek(rb, 0, peek, 10);
25  EXPECT_EQ((size_t)10, ringbuffer_size(rb));  // Ensure size doesn't change
26  EXPECT_EQ((size_t)6, ringbuffer_available(rb));
27  EXPECT_EQ((size_t)10, peeked);
28  ASSERT_TRUE(0 == memcmp(buffer, peek, peeked));
29
30  ringbuffer_free(rb);
31}
32
33TEST(RingbufferTest, test_insert_full) {
34  ringbuffer_t* rb = ringbuffer_init(5);
35
36  uint8_t aa[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA};
37  uint8_t bb[] = {0xBB, 0xBB, 0xBB, 0xBB, 0xBB};
38  uint8_t peek[5] = {0};
39
40  size_t added = ringbuffer_insert(rb, aa, 7);
41  EXPECT_EQ((size_t)5, added);
42  EXPECT_EQ((size_t)0, ringbuffer_available(rb));
43  EXPECT_EQ((size_t)5, ringbuffer_size(rb));
44
45  added = ringbuffer_insert(rb, bb, 5);
46  EXPECT_EQ((size_t)0, added);
47  EXPECT_EQ((size_t)0, ringbuffer_available(rb));
48  EXPECT_EQ((size_t)5, ringbuffer_size(rb));
49
50  size_t peeked = ringbuffer_peek(rb, 0, peek, 5);
51  EXPECT_EQ((size_t)5, peeked);
52  EXPECT_EQ((size_t)0, ringbuffer_available(rb));
53  EXPECT_EQ((size_t)5, ringbuffer_size(rb));
54
55  ASSERT_TRUE(0 == memcmp(aa, peek, peeked));
56
57  ringbuffer_free(rb);
58}
59
60TEST(RingbufferTest, test_multi_insert_delete) {
61  ringbuffer_t* rb = ringbuffer_init(16);
62  EXPECT_EQ((size_t)16, ringbuffer_available(rb));
63  EXPECT_EQ((size_t)0, ringbuffer_size(rb));
64
65  // Insert some bytes
66
67  uint8_t aa[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA};
68  size_t added = ringbuffer_insert(rb, aa, sizeof(aa));
69  EXPECT_EQ((size_t)8, added);
70  EXPECT_EQ((size_t)8, ringbuffer_available(rb));
71  EXPECT_EQ((size_t)8, ringbuffer_size(rb));
72
73  uint8_t bb[] = {0xBB, 0xBB, 0xBB, 0xBB, 0xBB};
74  ringbuffer_insert(rb, bb, sizeof(bb));
75  EXPECT_EQ((size_t)3, ringbuffer_available(rb));
76  EXPECT_EQ((size_t)13, ringbuffer_size(rb));
77
78  uint8_t content[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA,
79                       0xAA, 0xBB, 0xBB, 0xBB, 0xBB, 0xBB};
80  uint8_t peek[16] = {0};
81  size_t peeked = ringbuffer_peek(rb, 0, peek, 16);
82  EXPECT_EQ((size_t)13, peeked);
83  ASSERT_TRUE(0 == memcmp(content, peek, peeked));
84
85  // Delete some bytes
86
87  ringbuffer_delete(rb, sizeof(aa));
88  EXPECT_EQ((size_t)11, ringbuffer_available(rb));
89  EXPECT_EQ((size_t)5, ringbuffer_size(rb));
90
91  // Add some more to wrap buffer
92
93  uint8_t cc[] = {0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC};
94  ringbuffer_insert(rb, cc, sizeof(cc));
95  EXPECT_EQ((size_t)2, ringbuffer_available(rb));
96  EXPECT_EQ((size_t)14, ringbuffer_size(rb));
97
98  uint8_t content2[] = {0xBB, 0xBB, 0xBB, 0xBB, 0xBB, 0xCC, 0xCC};
99  peeked = ringbuffer_peek(rb, 0, peek, 7);
100  EXPECT_EQ((size_t)7, peeked);
101  ASSERT_TRUE(0 == memcmp(content2, peek, peeked));
102
103  // Pop buffer
104
105  memset(peek, 0, 16);
106  size_t popped = ringbuffer_pop(rb, peek, 7);
107  EXPECT_EQ((size_t)7, popped);
108  EXPECT_EQ((size_t)9, ringbuffer_available(rb));
109  ASSERT_TRUE(0 == memcmp(content2, peek, peeked));
110
111  // Add more again to check head motion
112
113  uint8_t dd[] = {0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDD, 0xDD};
114  added = ringbuffer_insert(rb, dd, sizeof(dd));
115  EXPECT_EQ((size_t)8, added);
116  EXPECT_EQ((size_t)1, ringbuffer_available(rb));
117
118  // Delete everything
119
120  ringbuffer_delete(rb, 16);
121  EXPECT_EQ((size_t)16, ringbuffer_available(rb));
122  EXPECT_EQ((size_t)0, ringbuffer_size(rb));
123
124  // Add small token
125
126  uint8_t ae[] = {0xAE, 0xAE, 0xAE};
127  added = ringbuffer_insert(rb, ae, sizeof(ae));
128  EXPECT_EQ((size_t)13, ringbuffer_available(rb));
129
130  // Get everything
131
132  popped = ringbuffer_pop(rb, peek, 16);
133  EXPECT_EQ(added, popped);
134  EXPECT_EQ((size_t)16, ringbuffer_available(rb));
135  EXPECT_EQ((size_t)0, ringbuffer_size(rb));
136  ASSERT_TRUE(0 == memcmp(ae, peek, popped));
137
138  ringbuffer_free(rb);
139}
140