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 "src/core/ext/transport/chttp2/transport/varint.h"
20
21 #include <grpc/grpc.h>
22 #include <grpc/slice.h>
23 #include <grpc/support/log.h>
24
25 #include "test/core/util/test_config.h"
26
test_varint(uint32_t value,uint32_t prefix_bits,uint8_t prefix_or,const char * expect_bytes,size_t expect_length)27 static void test_varint(uint32_t value, uint32_t prefix_bits, uint8_t prefix_or,
28 const char* expect_bytes, size_t expect_length) {
29 uint32_t nbytes = GRPC_CHTTP2_VARINT_LENGTH(value, prefix_bits);
30 grpc_slice expect =
31 grpc_slice_from_copied_buffer(expect_bytes, expect_length);
32 grpc_slice slice;
33 gpr_log(GPR_DEBUG, "Test: 0x%08x", value);
34 GPR_ASSERT(nbytes == expect_length);
35 slice = grpc_slice_malloc(nbytes);
36 GRPC_CHTTP2_WRITE_VARINT(value, prefix_bits, prefix_or,
37 GRPC_SLICE_START_PTR(slice), nbytes);
38 GPR_ASSERT(grpc_slice_eq(expect, slice));
39 grpc_slice_unref(expect);
40 grpc_slice_unref(slice);
41 }
42
43 #define TEST_VARINT(value, prefix_bits, prefix_or, expect) \
44 test_varint(value, prefix_bits, prefix_or, expect, sizeof(expect) - 1)
45
main(int argc,char ** argv)46 int main(int argc, char** argv) {
47 grpc_test_init(argc, argv);
48 grpc_init();
49 TEST_VARINT(0, 1, 0, "\x00");
50 TEST_VARINT(128, 1, 0, "\x7f\x01");
51 TEST_VARINT(16384, 1, 0, "\x7f\x81\x7f");
52 TEST_VARINT(2097152, 1, 0, "\x7f\x81\xff\x7f");
53 TEST_VARINT(268435456, 1, 0, "\x7f\x81\xff\xff\x7f");
54 TEST_VARINT(0xffffffff, 1, 0, "\x7f\x80\xff\xff\xff\x0f");
55 grpc_shutdown();
56 return 0;
57 }
58