unit_tests/tests/ignition_injection/test_fuel_computer.cpp

Directory:	./
File:	unit_tests/tests/ignition_injection/test_fuel_computer.cpp
Date:	2025-10-24 14:26:41

	Coverage	Exec	Excl	Total
Lines:	100.0%	40	0	40
Functions:	100.0%	12	0	12
Branches:	67.4%	58	0	86
Decisions:	-%	0	-	0

  
      Line
      Branch
      Decision
      Exec
      Source
    
      #include "pch.h"
    
      // sneaky...
    
      #define protected public
    
      #include "fuel_computer.h"
    
      using ::testing::FloatEq;
    
      class MockFuelComputer : public FuelComputerBase {
    
      public:
    
      2
      	MOCK_METHOD(float, getStoichiometricRatio, (), (const, override));
    
        3/3✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✓ Branch 10 taken 1 time.

      2
      	MOCK_METHOD(float, getTargetLambda, (float rpm, float load), (const, override));
    
        2/2✓ Branch 3 taken 1 time.
✓ Branch 6 taken 1 time.

      2
      	MOCK_METHOD(float, getTargetLambdaLoadAxis, (float defaultLoad), (const, override));
    
      };
    
      4
      TEST(FuelComputer, getCycleFuel) {
    
        1/1✓ Branch 2 taken 1 time.

      1
      	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
    
        1/1✓ Branch 2 taken 1 time.

      1
      	MockFuelComputer dut;
    
        5/5✓ Branch 3 taken 1 time.
✓ Branch 6 taken 1 time.
✓ Branch 9 taken 1 time.
✓ Branch 12 taken 1 time.
✓ Branch 16 taken 1 time.

      3
      	EXPECT_CALL(dut, getTargetLambdaLoadAxis(FloatEq(0.8f)))
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(0.8f));
    
        3/3✓ Branch 1 taken 1 time.
✓ Branch 4 taken 1 time.
✓ Branch 8 taken 1 time.

      3
      	EXPECT_CALL(dut, getStoichiometricRatio())
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(3.0f));
    
        6/6✓ Branch 3 taken 1 time.
✓ Branch 6 taken 1 time.
✓ Branch 10 taken 1 time.
✓ Branch 13 taken 1 time.
✓ Branch 16 taken 1 time.
✓ Branch 20 taken 1 time.

      3
      	EXPECT_CALL(dut, getTargetLambda(1000, FloatEq(0.8f)))
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(5.0f));
    
        1/1✓ Branch 1 taken 1 time.

      1
      	auto result = dut.getCycleFuel(7.0f, 1000, 0.8f);
    
        2/6✓ Branch 2 taken 1 time.
✗ Branch 5 not taken.
✓ Branch 6 taken 1 time.
✗ Branch 9 not taken.
✗ Branch 14 not taken.
✗ Branch 17 not taken.

      1
      	EXPECT_FLOAT_EQ(result, 7.0f / (5 * 3));
    
      2
      }
    
      4
      TEST(FuelComputer, FlexFuel) {
    
        1/1✓ Branch 2 taken 1 time.

      1
      	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
    
      1
      	FuelComputer dut;
    
      	// easier values for testing
    
      1
      	engineConfiguration->stoichRatioPrimary = 15;
    
      1
      	engineConfiguration->stoichRatioSecondary = 10;
    
      	// No sensor -> returns primary
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::resetMockValue(SensorType::FuelEthanolPercent);
    
        3/7✓ Branch 2 taken 1 time.
✓ Branch 5 taken 1 time.
✗ Branch 8 not taken.
✓ Branch 9 taken 1 time.
✗ Branch 12 not taken.
✗ Branch 17 not taken.
✗ Branch 20 not taken.

      1
      	EXPECT_FLOAT_EQ(15.0f, dut.getStoichiometricRatio());
    
      	// E0 -> primary afr
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::FuelEthanolPercent, 0);
    
        3/7✓ Branch 2 taken 1 time.
✓ Branch 5 taken 1 time.
✗ Branch 8 not taken.
✓ Branch 9 taken 1 time.
✗ Branch 12 not taken.
✗ Branch 17 not taken.
✗ Branch 20 not taken.

      1
      	EXPECT_FLOAT_EQ(15.0f, dut.getStoichiometricRatio());
    
      	// E50 -> half way between
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::FuelEthanolPercent, 50);
    
        3/7✓ Branch 2 taken 1 time.
✓ Branch 5 taken 1 time.
✗ Branch 8 not taken.
✓ Branch 9 taken 1 time.
✗ Branch 12 not taken.
✗ Branch 17 not taken.
✗ Branch 20 not taken.

      1
      	EXPECT_FLOAT_EQ(12.5f, dut.getStoichiometricRatio());
    
      	// E100 -> secondary afr
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::FuelEthanolPercent, 100);
    
        3/7✓ Branch 2 taken 1 time.
✓ Branch 5 taken 1 time.
✗ Branch 8 not taken.
✓ Branch 9 taken 1 time.
✗ Branch 12 not taken.
✗ Branch 17 not taken.
✗ Branch 20 not taken.

      1
      	EXPECT_FLOAT_EQ(10.0f, dut.getStoichiometricRatio());
    
      	// E(-10) -> clamp to primary
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::FuelEthanolPercent, -10);
    
        3/7✓ Branch 2 taken 1 time.
✓ Branch 5 taken 1 time.
✗ Branch 8 not taken.
✓ Branch 9 taken 1 time.
✗ Branch 12 not taken.
✗ Branch 17 not taken.
✗ Branch 20 not taken.

      1
      	EXPECT_FLOAT_EQ(15.0f, dut.getStoichiometricRatio());
    
      	// E110 -> clamp to secondary
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::FuelEthanolPercent, 110);
    
        3/7✓ Branch 2 taken 1 time.
✓ Branch 5 taken 1 time.
✗ Branch 8 not taken.
✓ Branch 9 taken 1 time.
✗ Branch 12 not taken.
✗ Branch 17 not taken.
✗ Branch 20 not taken.

      1
      	EXPECT_FLOAT_EQ(10.0f, dut.getStoichiometricRatio());
    
      2
      }

Line	Branch	Exec	Source
1			#include "pch.h"
2
3			// sneaky...
4			#define protected public
5			#include "fuel_computer.h"
6
7			using ::testing::FloatEq;
8
9			class MockFuelComputer : public FuelComputerBase {
10			public:
11		2	MOCK_METHOD(float, getStoichiometricRatio, (), (const, override));
12	3/3 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time.	2	MOCK_METHOD(float, getTargetLambda, (float rpm, float load), (const, override));
13	2/2 ✓ Branch 3 taken 1 time. ✓ Branch 6 taken 1 time.	2	MOCK_METHOD(float, getTargetLambdaLoadAxis, (float defaultLoad), (const, override));
14			};
15
16		4	TEST(FuelComputer, getCycleFuel) {
17	1/1 ✓ Branch 2 taken 1 time.	1	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
18
19	1/1 ✓ Branch 2 taken 1 time.	1	MockFuelComputer dut;
20
21	5/5 ✓ Branch 3 taken 1 time. ✓ Branch 6 taken 1 time. ✓ Branch 9 taken 1 time. ✓ Branch 12 taken 1 time. ✓ Branch 16 taken 1 time.	3	EXPECT_CALL(dut, getTargetLambdaLoadAxis(FloatEq(0.8f)))
22	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(0.8f));
23	3/3 ✓ Branch 1 taken 1 time. ✓ Branch 4 taken 1 time. ✓ Branch 8 taken 1 time.	3	EXPECT_CALL(dut, getStoichiometricRatio())
24	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(3.0f));
25	6/6 ✓ Branch 3 taken 1 time. ✓ Branch 6 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 13 taken 1 time. ✓ Branch 16 taken 1 time. ✓ Branch 20 taken 1 time.	3	EXPECT_CALL(dut, getTargetLambda(1000, FloatEq(0.8f)))
26	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(5.0f));
27
28	1/1 ✓ Branch 1 taken 1 time.	1	auto result = dut.getCycleFuel(7.0f, 1000, 0.8f);
29	2/6 ✓ Branch 2 taken 1 time. ✗ Branch 5 not taken. ✓ Branch 6 taken 1 time. ✗ Branch 9 not taken. ✗ Branch 14 not taken. ✗ Branch 17 not taken.	1	EXPECT_FLOAT_EQ(result, 7.0f / (5 * 3));
30		2	}
31
32		4	TEST(FuelComputer, FlexFuel) {
33	1/1 ✓ Branch 2 taken 1 time.	1	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
34
35		1	FuelComputer dut;
36
37			// easier values for testing
38		1	engineConfiguration->stoichRatioPrimary = 15;
39		1	engineConfiguration->stoichRatioSecondary = 10;
40
41			// No sensor -> returns primary
42	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::resetMockValue(SensorType::FuelEthanolPercent);
43	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_FLOAT_EQ(15.0f, dut.getStoichiometricRatio());
44
45			// E0 -> primary afr
46	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::FuelEthanolPercent, 0);
47	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_FLOAT_EQ(15.0f, dut.getStoichiometricRatio());
48
49			// E50 -> half way between
50	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::FuelEthanolPercent, 50);
51	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_FLOAT_EQ(12.5f, dut.getStoichiometricRatio());
52
53			// E100 -> secondary afr
54	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::FuelEthanolPercent, 100);
55	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_FLOAT_EQ(10.0f, dut.getStoichiometricRatio());
56
57			// E(-10) -> clamp to primary
58	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::FuelEthanolPercent, -10);
59	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_FLOAT_EQ(15.0f, dut.getStoichiometricRatio());
60
61			// E110 -> clamp to secondary
62	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::FuelEthanolPercent, 110);
63	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_FLOAT_EQ(10.0f, dut.getStoichiometricRatio());
64		2	}
65