GCC Code Coverage Report

Directory: ./
File: unit_tests/tests/test_gear_detector.cpp
Date: 2025-10-03 00:57:22
Coverage Exec Excl Total
Lines: 100.0% 168 0 168
Functions: 100.0% 22 0 22
Branches: 40.7% 235 0 577
Decisions: -% 0 - 0
Line Branch Decision Exec Source
1 #include "pch.h"
2
3 6 float GetGearRatioFor(float revPerKm, float axle, float kph, float rpm) {
4
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 6 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
5
6 6 engineConfiguration->driveWheelRevPerKm = revPerKm;
7 6 engineConfiguration->finalGearRatio = axle;
8
9
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 6 Sensor::setMockValue(SensorType::VehicleSpeed, kph);
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 6 Sensor::setMockValue(SensorType::Rpm, rpm);
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12
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 6 engine->periodicSlowCallback();
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14
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 6 auto& dut = engine->module<GearDetector>().unmock();
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 12 return dut.getGearboxRatio();
16 6 }
17
18 4 TEST(GearDetector, ComputeGearRatio) {
19 // real gears from Volvo racecar
20
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 1 EXPECT_NEAR_M3(3.35f, GetGearRatioFor(507, 4.1, 29.45f / 0.6214f, 5500));
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 1 EXPECT_NEAR_M3(1.99f, GetGearRatioFor(507, 4.1, 49.57f / 0.6214f, 5500));
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 1 EXPECT_NEAR_M3(1.33f, GetGearRatioFor(507, 4.1, 74.18f / 0.6214f, 5500));
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 1 EXPECT_NEAR_M3(1.00f, GetGearRatioFor(507, 4.1, 98.65f / 0.6214f, 5500));
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 1 EXPECT_NEAR_M3(0.72f, GetGearRatioFor(507, 4.1, 137.02f / 0.6214f, 5500));
25
26 // Idling, car stopped, check no div/0
27
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 1 EXPECT_EQ(0, GetGearRatioFor(507, 4.1, 0, 800));
28 1 }
29
30
31 4 TEST(GearDetector, GetRpmInGear) {
32
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 1 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
33
34 1 engineConfiguration->driveWheelRevPerKm = 507;
35 1 engineConfiguration->finalGearRatio = 4.10f;
36
37 // real gears from Volvo racecar
38 1 engineConfiguration->totalGearsCount = 5;
39 1 engineConfiguration->gearRatio[0] = 3.35f;
40 1 engineConfiguration->gearRatio[1] = 1.99f;
41 1 engineConfiguration->gearRatio[2] = 1.33f;
42 1 engineConfiguration->gearRatio[3] = 1.00f;
43 1 engineConfiguration->gearRatio[4] = 0.72f;
44
45
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 1 auto& dut = engine->module<GearDetector>().unmock();
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47
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 1 Sensor::setMockValue(SensorType::VehicleSpeed, 29.45f / 0.6214f);
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 1 EXPECT_NEAR(5500, dut.getRpmInGear(1), 1);
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 1 Sensor::setMockValue(SensorType::VehicleSpeed, 49.57f / 0.6214f);
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 1 EXPECT_NEAR(5500, dut.getRpmInGear(2), 1);
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 1 Sensor::setMockValue(SensorType::VehicleSpeed, 74.18f / 0.6214f);
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 1 EXPECT_NEAR(5500, dut.getRpmInGear(3), 1);
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 1 Sensor::setMockValue(SensorType::VehicleSpeed, 98.65f / 0.6214f);
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 1 EXPECT_NEAR(5500, dut.getRpmInGear(4), 1);
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 1 Sensor::setMockValue(SensorType::VehicleSpeed, 137.02f / 0.6214f);
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 1 EXPECT_NEAR(5500, dut.getRpmInGear(5), 1);
57
58 // Test some invalid cases
59
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 1 EXPECT_FLOAT_EQ(0, dut.getRpmInGear(0));
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 1 EXPECT_FLOAT_EQ(0, dut.getRpmInGear(10));
61
62 // Zero vehicle speed shouldn't cause a problem
63
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 1 Sensor::setMockValue(SensorType::VehicleSpeed, 0);
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 1 EXPECT_FLOAT_EQ(0, dut.getRpmInGear(0));
65
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 1 EXPECT_FLOAT_EQ(0, dut.getRpmInGear(1));
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 1 EXPECT_FLOAT_EQ(0, dut.getRpmInGear(5));
67
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 1 EXPECT_FLOAT_EQ(0, dut.getRpmInGear(10));
68 2 }
69
70 4 TEST(GearDetector, DetermineGearSingleSpeed) {
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 1 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
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 1 auto& dut = engine->module<GearDetector>().unmock();
73
74 1 engineConfiguration->totalGearsCount = 1;
75 1 engineConfiguration->gearRatio[0] = 2;
76
77
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 1 dut.onConfigurationChange(nullptr);
78
79 // Super high ratios indicate clutch slip or idling in neutral or something
80
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(100));
81
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(4));
82
83 // Check exactly on the gear
84
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(2));
85
86 // Check near the gear
87
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(2.1));
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(1.9));
89
90 // Extremely low ratio suggests stopped engine at speed?
91
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(1.0));
92 2 }
93
94 4 TEST(GearDetector, DetermineGear5Speed) {
95
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 1 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
96
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 1 auto& dut = engine->module<GearDetector>().unmock();
97
98 1 engineConfiguration->totalGearsCount = 5;
99 1 engineConfiguration->gearRatio[0] = 3.35;
100 1 engineConfiguration->gearRatio[1] = 1.99;
101 1 engineConfiguration->gearRatio[2] = 1.33;
102 1 engineConfiguration->gearRatio[3] = 1.00;
103 1 engineConfiguration->gearRatio[4] = 0.72;
104
105
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 1 dut.onConfigurationChange(nullptr);
106
107 // Super high ratios indicate clutch slip or idling in neutral or something
108
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(100));
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(6));
110
111 // Check exactly on gears
112
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(3.35));
113
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 1 EXPECT_EQ(2u, dut.determineGearFromRatio(1.99));
114
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 1 EXPECT_EQ(3u, dut.determineGearFromRatio(1.33));
115
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 1 EXPECT_EQ(4u, dut.determineGearFromRatio(1.00));
116
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 1 EXPECT_EQ(5u, dut.determineGearFromRatio(0.72));
117
118 // Check near each gear
119
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(3.45));
120
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(3.25));
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 1 EXPECT_EQ(2u, dut.determineGearFromRatio(2.2));
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 1 EXPECT_EQ(2u, dut.determineGearFromRatio(1.8));
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 1 EXPECT_EQ(3u, dut.determineGearFromRatio(1.45));
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 1 EXPECT_EQ(3u, dut.determineGearFromRatio(1.25));
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 1 EXPECT_EQ(4u, dut.determineGearFromRatio(1.1));
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 1 EXPECT_EQ(4u, dut.determineGearFromRatio(0.9));
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 1 EXPECT_EQ(5u, dut.determineGearFromRatio(0.8));
132
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 1 EXPECT_EQ(5u, dut.determineGearFromRatio(0.6));
133
134 // Extremely low ratio suggests stopped engine at speed?
135
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(0.1));
136 2 }
137
138 4 TEST(GearDetector, MiataNb6Speed) {
139
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 1 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
140
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 1 auto& dut = engine->module<GearDetector>().unmock();
141
142 1 engineConfiguration->totalGearsCount = 6;
143 1 engineConfiguration->gearRatio[0] = 3.76;
144 1 engineConfiguration->gearRatio[1] = 2.27;
145 1 engineConfiguration->gearRatio[2] = 1.65;
146 1 engineConfiguration->gearRatio[3] = 1.26;
147 1 engineConfiguration->gearRatio[4] = 1.00;
148 1 engineConfiguration->gearRatio[5] = 0.84;
149 1 engineConfiguration->gearRatio[6] = 0.84;
150 1 engineConfiguration->gearRatio[7] = 0.84;
151
152
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 1 dut.onConfigurationChange(nullptr);
153
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(5.85));
155
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(5.51));
156
157 // Check exactly on gears
158
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(3.76));
159
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 1 EXPECT_EQ(2u, dut.determineGearFromRatio(2.27));
160
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 1 EXPECT_EQ(3u, dut.determineGearFromRatio(1.65));
161
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 1 EXPECT_EQ(4u, dut.determineGearFromRatio(1.26));
162
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 1 EXPECT_EQ(5u, dut.determineGearFromRatio(1.00));
163
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 1 EXPECT_EQ(6u, dut.determineGearFromRatio(0.84));
164 2 }
165
166 4 TEST(GearDetector, DetermineGear8Speed) {
167
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 1 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
168
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 1 auto& dut = engine->module<GearDetector>().unmock();
169
170 // ZF 8HP 70
171 1 engineConfiguration->totalGearsCount = 8;
172 1 engineConfiguration->gearRatio[0] = 4.69;
173 1 engineConfiguration->gearRatio[1] = 3.13;
174 1 engineConfiguration->gearRatio[2] = 2.10;
175 1 engineConfiguration->gearRatio[3] = 1.67;
176 1 engineConfiguration->gearRatio[4] = 1.28;
177 1 engineConfiguration->gearRatio[5] = 1;
178 1 engineConfiguration->gearRatio[6] = 0.84;
179 1 engineConfiguration->gearRatio[7] = 0.67;
180
181
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 1 dut.onConfigurationChange(nullptr);
182
183 // Super high ratios indicate clutch slip or idling in neutral or something
184
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(100));
185
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(8));
186
187 // Check exactly on gears - only test the ends, the middle works
188
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(4.69));
189
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 1 EXPECT_EQ(2u, dut.determineGearFromRatio(3.13));
190
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 1 EXPECT_EQ(7u, dut.determineGearFromRatio(0.84));
192
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 1 EXPECT_EQ(8u, dut.determineGearFromRatio(0.67));
193
194 // Check near each gear - only test the ends, the middle works
195
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(4.75));
196
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 1 EXPECT_EQ(1u, dut.determineGearFromRatio(4.3));
197
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 1 EXPECT_EQ(8u, dut.determineGearFromRatio(0.71));
199
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 1 EXPECT_EQ(8u, dut.determineGearFromRatio(0.6));
200
201 // Extremely low ratio suggests stopped engine at speed?
202
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 1 EXPECT_EQ(0u, dut.determineGearFromRatio(0.1));
203 2 }
204
205 4 TEST(GearDetector, ParameterValidation) {
206
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 1 EngineTestHelper eth(engine_type_e::TEST_ENGINE);
207
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 1 auto& dut = engine->module<GearDetector>().unmock();
208
209 // Defaults should work
210
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 1 EXPECT_NO_FATAL_ERROR(dut.onConfigurationChange(nullptr));
211
212 // Invalid gear count
213 1 engineConfiguration->totalGearsCount = 25;
214
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 1 EXPECT_FATAL_ERROR(dut.onConfigurationChange(nullptr));
215
216 // Valid gears
217 1 engineConfiguration->totalGearsCount = 2;
218 1 engineConfiguration->gearRatio[0] = 3;
219 1 engineConfiguration->gearRatio[1] = 2;
220
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 1 EXPECT_NO_FATAL_ERROR(dut.onConfigurationChange(nullptr));
221
222 // Invalid gear ratio
223 1 engineConfiguration->gearRatio[1] = 0;
224
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 1 EXPECT_FATAL_ERROR(dut.onConfigurationChange(nullptr));
225
226 // Out of order gear ratios
227 1 engineConfiguration->gearRatio[0] = 2;
228 1 engineConfiguration->gearRatio[1] = 3;
229
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 1 EXPECT_FATAL_ERROR(dut.onConfigurationChange(nullptr));
230
231 // No gears at all is a valid configuration
232 1 engineConfiguration->totalGearsCount = 0;
233
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 1 EXPECT_NO_FATAL_ERROR(dut.onConfigurationChange(nullptr));
234 2 }
235