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1/*
2The MIT License (MIT)
3
4Copyright (c) 2016 Fred Sundvik
5
6Permission is hereby granted, free of charge, to any person obtaining a copy
7of this software and associated documentation files (the "Software"), to deal
8in the Software without restriction, including without limitation the rights
9to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10copies of the Software, and to permit persons to whom the Software is
11furnished to do so, subject to the following conditions:
12
13The above copyright notice and this permission notice shall be included in all
14copies or substantial portions of the Software.
15
16THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22SOFTWARE.
23*/
24
25#include "gtest/gtest.h"
26#include "gmock/gmock.h"
27extern "C" {
28#include "serial_link/protocol/frame_validator.h"
29}
30
31using testing::_;
32using testing::Args;
33using testing::ElementsAreArray;
34
35class FrameValidator : public testing::Test {
36 public:
37 FrameValidator() { Instance = this; }
38
39 ~FrameValidator() { Instance = nullptr; }
40
41 MOCK_METHOD3(route_incoming_frame, void(uint8_t link, uint8_t* data, uint16_t size));
42 MOCK_METHOD3(byte_stuffer_send_frame, void(uint8_t link, uint8_t* data, uint16_t size));
43
44 static FrameValidator* Instance;
45};
46
47FrameValidator* FrameValidator::Instance = nullptr;
48
49extern "C" {
50void route_incoming_frame(uint8_t link, uint8_t* data, uint16_t size) { FrameValidator::Instance->route_incoming_frame(link, data, size); }
51
52void byte_stuffer_send_frame(uint8_t link, uint8_t* data, uint16_t size) { FrameValidator::Instance->byte_stuffer_send_frame(link, data, size); }
53}
54
55TEST_F(FrameValidator, doesnt_validate_frames_under_5_bytes) {
56 EXPECT_CALL(*this, route_incoming_frame(_, _, _)).Times(0);
57 uint8_t data[] = {1, 2};
58 validator_recv_frame(0, 0, 1);
59 validator_recv_frame(0, data, 2);
60 validator_recv_frame(0, data, 3);
61 validator_recv_frame(0, data, 4);
62}
63
64TEST_F(FrameValidator, validates_one_byte_frame_with_correct_crc) {
65 uint8_t data[] = {0x44, 0x04, 0x6A, 0xB3, 0xA3};
66 EXPECT_CALL(*this, route_incoming_frame(_, _, _)).With(Args<1, 2>(ElementsAreArray(data, 1)));
67 validator_recv_frame(0, data, 5);
68}
69
70TEST_F(FrameValidator, does_not_validate_one_byte_frame_with_incorrect_crc) {
71 uint8_t data[] = {0x44, 0, 0, 0, 0};
72 EXPECT_CALL(*this, route_incoming_frame(_, _, _)).Times(0);
73 validator_recv_frame(1, data, 5);
74}
75
76TEST_F(FrameValidator, validates_four_byte_frame_with_correct_crc) {
77 uint8_t data[] = {0x44, 0x10, 0xFF, 0x00, 0x74, 0x4E, 0x30, 0xBA};
78 EXPECT_CALL(*this, route_incoming_frame(_, _, _)).With(Args<1, 2>(ElementsAreArray(data, 4)));
79 validator_recv_frame(1, data, 8);
80}
81
82TEST_F(FrameValidator, validates_five_byte_frame_with_correct_crc) {
83 uint8_t data[] = {1, 2, 3, 4, 5, 0xF4, 0x99, 0x0B, 0x47};
84 EXPECT_CALL(*this, route_incoming_frame(_, _, _)).With(Args<1, 2>(ElementsAreArray(data, 5)));
85 validator_recv_frame(0, data, 9);
86}
87
88TEST_F(FrameValidator, sends_one_byte_with_correct_crc) {
89 uint8_t original[] = {0x44, 0, 0, 0, 0};
90 uint8_t expected[] = {0x44, 0x04, 0x6A, 0xB3, 0xA3};
91 EXPECT_CALL(*this, byte_stuffer_send_frame(_, _, _)).With(Args<1, 2>(ElementsAreArray(expected)));
92 validator_send_frame(0, original, 1);
93}
94
95TEST_F(FrameValidator, sends_five_bytes_with_correct_crc) {
96 uint8_t original[] = {1, 2, 3, 4, 5, 0, 0, 0, 0};
97 uint8_t expected[] = {1, 2, 3, 4, 5, 0xF4, 0x99, 0x0B, 0x47};
98 EXPECT_CALL(*this, byte_stuffer_send_frame(_, _, _)).With(Args<1, 2>(ElementsAreArray(expected)));
99 validator_send_frame(0, original, 5);
100}