1 //
2 //
3 // Copyright 2015 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 //
18
19 #include <stddef.h>
20
21 #include "gtest/gtest.h"
22
23 #include <grpc/slice.h>
24 #include <grpc/slice_buffer.h>
25 #include <grpc/support/alloc.h>
26
27 #include "src/core/lib/slice/slice_internal.h"
28 #include "test/core/util/test_config.h"
29
30 static constexpr size_t kTotalDataLength = 4096;
31
test_slice_buffer_add()32 void test_slice_buffer_add() {
33 grpc_slice_buffer buf;
34 grpc_slice aaa = grpc_slice_from_copied_string("aaa");
35 grpc_slice bb = grpc_slice_from_copied_string("bb");
36 size_t i;
37
38 grpc_slice_buffer_init(&buf);
39 for (i = 0; i < 10; i++) {
40 grpc_slice_ref(aaa);
41 grpc_slice_ref(bb);
42 grpc_slice_buffer_add(&buf, aaa);
43 grpc_slice_buffer_add(&buf, bb);
44 }
45 ASSERT_GT(buf.count, 0);
46 ASSERT_EQ(buf.length, 50);
47 grpc_slice_buffer_reset_and_unref(&buf);
48 ASSERT_EQ(buf.count, 0);
49 ASSERT_EQ(buf.length, 0);
50 for (i = 0; i < 10; i++) {
51 grpc_slice_ref(aaa);
52 grpc_slice_ref(bb);
53 grpc_slice_buffer_add(&buf, aaa);
54 grpc_slice_buffer_add(&buf, bb);
55 }
56 ASSERT_GT(buf.count, 0);
57 ASSERT_EQ(buf.length, 50);
58 for (i = 0; i < 10; i++) {
59 grpc_slice_buffer_pop(&buf);
60 grpc_slice_unref(aaa);
61 grpc_slice_unref(bb);
62 }
63 ASSERT_EQ(buf.count, 0);
64 ASSERT_EQ(buf.length, 0);
65 grpc_slice_buffer_destroy(&buf);
66 }
67
free_data(void * data,size_t len)68 static void free_data(void* data, size_t len) {
69 ASSERT_EQ(len, kTotalDataLength);
70 gpr_free(data);
71 }
72
test_slice_buffer_add_contiguous_slices()73 void test_slice_buffer_add_contiguous_slices() {
74 grpc_slice_buffer buf;
75 grpc_slice_buffer_init(&buf);
76 char* data = reinterpret_cast<char*>(gpr_malloc(kTotalDataLength));
77 ASSERT_NE(data, nullptr);
78 grpc_slice a = grpc_slice_new_with_len(data, kTotalDataLength, free_data);
79 grpc_slice s1 = grpc_slice_split_head(&a, kTotalDataLength / 4);
80 grpc_slice s2 = grpc_slice_split_head(&a, kTotalDataLength / 4);
81 grpc_slice s3 = grpc_slice_split_head(&a, kTotalDataLength / 4);
82 grpc_slice_buffer_add(&buf, s1);
83 ASSERT_EQ(buf.count, 1);
84 ASSERT_EQ(buf.length, kTotalDataLength / 4);
85 grpc_slice_buffer_add(&buf, s2);
86 ASSERT_EQ(buf.count, 1);
87 ASSERT_EQ(buf.length, kTotalDataLength / 2);
88 grpc_slice_buffer_add(&buf, s3);
89 ASSERT_EQ(buf.count, 1);
90 ASSERT_EQ(buf.length, 3 * kTotalDataLength / 4);
91 grpc_slice_buffer_add(&buf, a);
92 ASSERT_EQ(buf.count, 1);
93 ASSERT_EQ(buf.length, kTotalDataLength);
94 grpc_slice_buffer_destroy(&buf);
95 }
96
test_slice_buffer_move_first()97 void test_slice_buffer_move_first() {
98 grpc_slice slices[3];
99 grpc_slice_buffer src;
100 grpc_slice_buffer dst;
101 int idx = 0;
102 size_t src_len = 0;
103 size_t dst_len = 0;
104
105 slices[0] = grpc_slice_from_copied_string("aaa");
106 slices[1] = grpc_slice_from_copied_string("bbbb");
107 slices[2] = grpc_slice_from_copied_string("ccc");
108
109 grpc_slice_buffer_init(&src);
110 grpc_slice_buffer_init(&dst);
111 for (idx = 0; idx < 3; idx++) {
112 grpc_slice_ref(slices[idx]);
113 // For this test, it is important that we add each slice at a new
114 // slice index
115 grpc_slice_buffer_add_indexed(&src, slices[idx]);
116 grpc_slice_buffer_add_indexed(&dst, slices[idx]);
117 }
118
119 // Case 1: Move more than the first slice's length from src to dst
120 src_len = src.length;
121 dst_len = dst.length;
122 grpc_slice_buffer_move_first(&src, 4, &dst);
123 src_len -= 4;
124 dst_len += 4;
125 ASSERT_EQ(src.length, src_len);
126 ASSERT_EQ(dst.length, dst_len);
127
128 // src now has two slices ["bbb"] and ["ccc"]
129 // Case 2: Move the first slice from src to dst
130 grpc_slice_buffer_move_first(&src, 3, &dst);
131 src_len -= 3;
132 dst_len += 3;
133 ASSERT_EQ(src.length, src_len);
134 ASSERT_EQ(dst.length, dst_len);
135
136 // src now has one slice ["ccc"]
137 // Case 3: Move less than the first slice's length from src to dst
138 grpc_slice_buffer_move_first(&src, 2, &dst);
139 src_len -= 2;
140 dst_len += 2;
141 ASSERT_EQ(src.length, src_len);
142 ASSERT_EQ(dst.length, dst_len);
143 }
144
test_slice_buffer_first()145 void test_slice_buffer_first() {
146 grpc_slice slices[3];
147 slices[0] = grpc_slice_from_copied_string("aaa");
148 slices[1] = grpc_slice_from_copied_string("bbbb");
149 slices[2] = grpc_slice_from_copied_string("ccccc");
150
151 grpc_slice_buffer buf;
152 grpc_slice_buffer_init(&buf);
153 for (int idx = 0; idx < 3; ++idx) {
154 grpc_slice_ref(slices[idx]);
155 grpc_slice_buffer_add_indexed(&buf, slices[idx]);
156 }
157
158 grpc_slice* first = grpc_slice_buffer_peek_first(&buf);
159 ASSERT_EQ(GRPC_SLICE_LENGTH(*first), GRPC_SLICE_LENGTH(slices[0]));
160 ASSERT_EQ(buf.count, 3);
161 ASSERT_EQ(buf.length, 12);
162
163 grpc_slice_buffer_sub_first(&buf, 1, 2);
164 first = grpc_slice_buffer_peek_first(&buf);
165 ASSERT_EQ(GRPC_SLICE_LENGTH(*first), 1);
166 ASSERT_EQ(buf.count, 3);
167 ASSERT_EQ(buf.length, 10);
168
169 grpc_slice_buffer_remove_first(&buf);
170 first = grpc_slice_buffer_peek_first(&buf);
171 ASSERT_EQ(GRPC_SLICE_LENGTH(*first), GRPC_SLICE_LENGTH(slices[1]));
172 ASSERT_EQ(buf.count, 2);
173 ASSERT_EQ(buf.length, 9);
174
175 grpc_slice_buffer_remove_first(&buf);
176 first = grpc_slice_buffer_peek_first(&buf);
177 ASSERT_EQ(GRPC_SLICE_LENGTH(*first), GRPC_SLICE_LENGTH(slices[2]));
178 ASSERT_EQ(buf.count, 1);
179 ASSERT_EQ(buf.length, 5);
180
181 grpc_slice_buffer_remove_first(&buf);
182 ASSERT_EQ(buf.count, 0);
183 ASSERT_EQ(buf.length, 0);
184 }
185
main(int argc,char ** argv)186 int main(int argc, char** argv) {
187 grpc::testing::TestEnvironment env(&argc, argv);
188 ::testing::InitGoogleTest(&argc, argv);
189 grpc::testing::TestGrpcScope grpc_scope;
190 return RUN_ALL_TESTS();
191 }
192