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Diffstat (limited to 'quantum/serial_link/tests/frame_router_tests.c')
-rw-r--r--quantum/serial_link/tests/frame_router_tests.c231
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diff --git a/quantum/serial_link/tests/frame_router_tests.c b/quantum/serial_link/tests/frame_router_tests.c
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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 <cgreen/cgreen.h>
26#include <cgreen/mocks.h>
27#include "serial_link/protocol/byte_stuffer.c"
28#include "serial_link/protocol/frame_validator.c"
29#include "serial_link/protocol/frame_router.c"
30#include "serial_link/protocol/transport.h"
31
32static uint8_t received_data[256];
33static uint16_t received_data_size;
34
35typedef struct {
36 uint8_t sent_data[256];
37 uint16_t sent_data_size;
38} receive_buffer_t;
39
40typedef struct {
41 receive_buffer_t send_buffers[2];
42} router_buffer_t;
43
44router_buffer_t router_buffers[8];
45
46router_buffer_t* current_router_buffer;
47
48
49Describe(FrameRouter);
50BeforeEach(FrameRouter) {
51 init_byte_stuffer();
52 memset(router_buffers, 0, sizeof(router_buffers));
53 current_router_buffer = 0;
54}
55AfterEach(FrameRouter) {}
56
57typedef struct {
58 uint32_t data;
59 uint8_t extra[16];
60} frame_buffer_t;
61
62
63void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
64 receive_buffer_t* buffer = &current_router_buffer->send_buffers[link];
65 memcpy(buffer->sent_data + buffer->sent_data_size, data, size);
66 buffer->sent_data_size += size;
67}
68
69static void receive_data(uint8_t link, uint8_t* data, uint16_t size) {
70 int i;
71 for(i=0;i<size;i++) {
72 byte_stuffer_recv_byte(link, data[i]);
73 }
74}
75
76static void activate_router(uint8_t num) {
77 current_router_buffer = router_buffers + num;
78 router_set_master(num==0);
79}
80
81static void simulate_transport(uint8_t from, uint8_t to) {
82 activate_router(to);
83 if (from > to) {
84 receive_data(DOWN_LINK,
85 router_buffers[from].send_buffers[UP_LINK].sent_data,
86 router_buffers[from].send_buffers[UP_LINK].sent_data_size);
87 }
88 else if(to > from) {
89 receive_data(UP_LINK,
90 router_buffers[from].send_buffers[DOWN_LINK].sent_data,
91 router_buffers[from].send_buffers[DOWN_LINK].sent_data_size);
92 }
93}
94
95void transport_recv_frame(uint8_t from, uint8_t* data, uint16_t size) {
96 mock(from, data, size);
97}
98
99
100Ensure(FrameRouter, master_broadcast_is_received_by_everyone) {
101 frame_buffer_t data;
102 data.data = 0xAB7055BB;
103 activate_router(0);
104 router_send_frame(0xFF, (uint8_t*)&data, 4);
105 assert_that(router_buffers[0].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
106 assert_that(router_buffers[0].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
107
108 expect(transport_recv_frame,
109 when(from, is_equal_to(0)),
110 when(size, is_equal_to(4)),
111 when(data, is_equal_to_contents_of(&data.data, 4))
112 );
113 simulate_transport(0, 1);
114 assert_that(router_buffers[1].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
115 assert_that(router_buffers[1].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
116
117 expect(transport_recv_frame,
118 when(from, is_equal_to(0)),
119 when(size, is_equal_to(4)),
120 when(data, is_equal_to_contents_of(&data.data, 4))
121 );
122 simulate_transport(1, 2);
123 assert_that(router_buffers[2].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
124 assert_that(router_buffers[2].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
125}
126
127Ensure(FrameRouter, master_send_is_received_by_targets) {
128 frame_buffer_t data;
129 data.data = 0xAB7055BB;
130 activate_router(0);
131 router_send_frame((1 << 1) | (1 << 2), (uint8_t*)&data, 4);
132 assert_that(router_buffers[0].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
133 assert_that(router_buffers[0].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
134
135 simulate_transport(0, 1);
136 assert_that(router_buffers[1].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
137 assert_that(router_buffers[1].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
138
139 expect(transport_recv_frame,
140 when(from, is_equal_to(0)),
141 when(size, is_equal_to(4)),
142 when(data, is_equal_to_contents_of(&data.data, 4))
143 );
144 simulate_transport(1, 2);
145 assert_that(router_buffers[2].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
146 assert_that(router_buffers[2].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
147
148 expect(transport_recv_frame,
149 when(from, is_equal_to(0)),
150 when(size, is_equal_to(4)),
151 when(data, is_equal_to_contents_of(&data.data, 4))
152 );
153 simulate_transport(2, 3);
154 assert_that(router_buffers[3].send_buffers[DOWN_LINK].sent_data_size, is_greater_than(0));
155 assert_that(router_buffers[3].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
156}
157
158Ensure(FrameRouter, first_link_sends_to_master) {
159 frame_buffer_t data;
160 data.data = 0xAB7055BB;
161 activate_router(1);
162 router_send_frame(0, (uint8_t*)&data, 4);
163 assert_that(router_buffers[1].send_buffers[UP_LINK].sent_data_size, is_greater_than(0));
164 assert_that(router_buffers[1].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
165
166 expect(transport_recv_frame,
167 when(from, is_equal_to(1)),
168 when(size, is_equal_to(4)),
169 when(data, is_equal_to_contents_of(&data.data, 4))
170 );
171 simulate_transport(1, 0);
172 assert_that(router_buffers[0].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
173 assert_that(router_buffers[0].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
174}
175
176Ensure(FrameRouter, second_link_sends_to_master) {
177 frame_buffer_t data;
178 data.data = 0xAB7055BB;
179 activate_router(2);
180 router_send_frame(0, (uint8_t*)&data, 4);
181 assert_that(router_buffers[2].send_buffers[UP_LINK].sent_data_size, is_greater_than(0));
182 assert_that(router_buffers[2].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
183
184 simulate_transport(2, 1);
185 assert_that(router_buffers[1].send_buffers[UP_LINK].sent_data_size, is_greater_than(0));
186 assert_that(router_buffers[1].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
187
188 expect(transport_recv_frame,
189 when(from, is_equal_to(2)),
190 when(size, is_equal_to(4)),
191 when(data, is_equal_to_contents_of(&data.data, 4))
192 );
193 simulate_transport(1, 0);
194 assert_that(router_buffers[0].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
195 assert_that(router_buffers[0].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
196}
197
198Ensure(FrameRouter, master_sends_to_master_does_nothing) {
199 frame_buffer_t data;
200 data.data = 0xAB7055BB;
201 activate_router(0);
202 router_send_frame(0, (uint8_t*)&data, 4);
203 assert_that(router_buffers[0].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
204 assert_that(router_buffers[0].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
205}
206
207Ensure(FrameRouter, link_sends_to_other_link_does_nothing) {
208 frame_buffer_t data;
209 data.data = 0xAB7055BB;
210 activate_router(1);
211 router_send_frame(2, (uint8_t*)&data, 4);
212 assert_that(router_buffers[1].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
213 assert_that(router_buffers[1].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
214}
215
216Ensure(FrameRouter, master_receives_on_uplink_does_nothing) {
217 frame_buffer_t data;
218 data.data = 0xAB7055BB;
219 activate_router(1);
220 router_send_frame(0, (uint8_t*)&data, 4);
221 assert_that(router_buffers[1].send_buffers[UP_LINK].sent_data_size, is_greater_than(0));
222 assert_that(router_buffers[1].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
223
224 never_expect(transport_recv_frame);
225 activate_router(0);
226 receive_data(UP_LINK,
227 router_buffers[1].send_buffers[UP_LINK].sent_data,
228 router_buffers[1].send_buffers[UP_LINK].sent_data_size);
229 assert_that(router_buffers[0].send_buffers[UP_LINK].sent_data_size, is_equal_to(0));
230 assert_that(router_buffers[0].send_buffers[DOWN_LINK].sent_data_size, is_equal_to(0));
231}
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