unit_tests/tests/test_stft.cpp - GCC Code Coverage Report

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

	Coverage	Exec	Excl	Total
Lines:	100.0%	69	0	69
Functions:	100.0%	20	0	20
Branches:	57.2%	91	0	159
Decisions:	-%	0	-	0

  
      Line
      Branch
      Decision
      Exec
      Source
    
      #include "pch.h"
    
      #include "closed_loop_fuel_cell.h"
    
      #include "closed_loop_fuel.h"
    
      using ::testing::_;
    
      using ::testing::Return;
    
      using ::testing::StrictMock;
    
      class MockClCell : public ClosedLoopFuelCellBase {
    
      public:
    
      4
      	MOCK_METHOD(float, getLambdaError, (), (const));
    
      2
      	MOCK_METHOD(float, getMaxAdjustment, (), (const));
    
      2
      	MOCK_METHOD(float, getMinAdjustment, (), (const));
    
      2
      	MOCK_METHOD(float, getIntegratorGain, (), (const));
    
      };
    
      4
      TEST(ClosedLoopCell, TestDeadband) {
    
        1/1✓ Branch 2 taken 1 time.

      1
      	StrictMock<MockClCell> cl;
    
      	// Error is more than deadtime, so nothing else should be called
    
        3/3✓ Branch 1 taken 1 time.
✓ Branch 4 taken 1 time.
✓ Branch 8 taken 1 time.

      3
      	EXPECT_CALL(cl, getLambdaError())
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(0.05f));
    
        1/1✓ Branch 1 taken 1 time.

      1
      	cl.update(0.1f, true);
    
      	// Should be zero adjustment
    
        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(cl.getAdjustment(), 1.0f);
    
      2
      }
    
      4
      TEST(ClosedLoopFuelCell, AdjustRate) {
    
        1/1✓ Branch 2 taken 1 time.

      1
      	StrictMock<MockClCell> cl;
    
        3/3✓ Branch 1 taken 1 time.
✓ Branch 4 taken 1 time.
✓ Branch 8 taken 1 time.

      3
      	EXPECT_CALL(cl, getLambdaError())
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(0.1f));
    
        3/3✓ Branch 1 taken 1 time.
✓ Branch 4 taken 1 time.
✓ Branch 8 taken 1 time.

      3
      	EXPECT_CALL(cl, getMinAdjustment())
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(-0.2f));
    
        3/3✓ Branch 1 taken 1 time.
✓ Branch 4 taken 1 time.
✓ Branch 8 taken 1 time.

      3
      	EXPECT_CALL(cl, getMaxAdjustment())
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(0.2f));
    
        3/3✓ Branch 1 taken 1 time.
✓ Branch 4 taken 1 time.
✓ Branch 8 taken 1 time.

      3
      	EXPECT_CALL(cl, getIntegratorGain())
    
        3/3✓ Branch 5 taken 1 time.
✓ Branch 8 taken 1 time.
✓ Branch 11 taken 1 time.

      3
      		.WillOnce(Return(2.0f));
    
        1/1✓ Branch 1 taken 1 time.

      1
      	cl.update(0.0f, false);
    
      	// Should have integrated 0.2 * dt
    
      	// dt = 1000.0f / FAST_CALLBACK_PERIOD_MS
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 6 taken 1 time.
✗ Branch 9 not taken.
✓ Branch 10 taken 1 time.
✗ Branch 13 not taken.
✗ Branch 18 not taken.
✗ Branch 21 not taken.

      1
      	EXPECT_FLOAT_EQ(cl.getAdjustment(), 1 + (0.2f / (1000.0f / FAST_CALLBACK_PERIOD_MS)));
    
      2
      }
    
      4
      TEST(ClosedLoopFuel, CellSelection) {
    
      1
      	ShortTermFuelTrim stft;
    
      1
      	stft_s cfg;
    
      	// Sensible region config
    
      1
      	cfg.maxIdleRegionRpm = 1500;
    
      1
      	cfg.minPowerLoad = 80;
    
      1
      	cfg.maxOverrunLoad = 30;
    
        1/1✓ Branch 1 taken 1 time.

      1
      	stft.init(&cfg);
    
      	// Test idle
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(0u, stft.computeStftBin(1000, 10, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(0u, stft.computeStftBin(1000, 50, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(0u, stft.computeStftBin(1000, 90, cfg));
    
      	// Test overrun
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(1u, stft.computeStftBin(2000, 10, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(1u, stft.computeStftBin(4000, 10, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(1u, stft.computeStftBin(10000, 10, cfg));
    
      	// Test load
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(2u, stft.computeStftBin(2000, 90, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(2u, stft.computeStftBin(4000, 90, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(2u, stft.computeStftBin(10000, 90, cfg));
    
      	// Main cell
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(3u, stft.computeStftBin(2000, 50, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(3u, stft.computeStftBin(4000, 50, cfg));
    
        3/7✓ Branch 3 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(3u, stft.computeStftBin(10000, 50, cfg));
    
      1
      }
    
      4
      TEST(ClosedLoopFuel, afrLimits) {
    
      1
      	ShortTermFuelTrim stft;
    
        1/1✓ Branch 2 taken 1 time.

      1
      	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
    
      1
      	engineConfiguration->stft.minAfr = 10;  // 10.0 AFR
    
      1
      	engineConfiguration->stft.maxAfr = 18;  // 18.0 AFR
    
        1/1✓ Branch 1 taken 1 time.

      1
      	stft.init(&engineConfiguration->stft);
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::Lambda1, 0.1f);
    
        3/7✓ Branch 4 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_NE(stft.getLearningState(SensorType::Lambda1), stftEnabled);
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::Lambda1, 1.0f);
    
        3/7✓ Branch 4 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_EQ(stft.getLearningState(SensorType::Lambda1), stftEnabled);
    
        1/1✓ Branch 1 taken 1 time.

      1
      	Sensor::setMockValue(SensorType::Lambda1, 2.0f);
    
        3/7✓ Branch 4 taken 1 time.
✓ Branch 7 taken 1 time.
✗ Branch 12 not taken.
✓ Branch 13 taken 1 time.
✗ Branch 16 not taken.
✗ Branch 21 not taken.
✗ Branch 24 not taken.

      1
      	EXPECT_NE(stft.getLearningState(SensorType::Lambda1), stftEnabled);
    
      2
      }

Line	Branch	Exec	Source
1			#include "pch.h"
2
3			#include "closed_loop_fuel_cell.h"
4			#include "closed_loop_fuel.h"
5
6			using ::testing::_;
7			using ::testing::Return;
8			using ::testing::StrictMock;
9
10			class MockClCell : public ClosedLoopFuelCellBase {
11			public:
12		4	MOCK_METHOD(float, getLambdaError, (), (const));
13		2	MOCK_METHOD(float, getMaxAdjustment, (), (const));
14		2	MOCK_METHOD(float, getMinAdjustment, (), (const));
15		2	MOCK_METHOD(float, getIntegratorGain, (), (const));
16			};
17
18		4	TEST(ClosedLoopCell, TestDeadband) {
19	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockClCell> cl;
20
21			// Error is more than deadtime, so nothing else should be called
22	3/3 ✓ Branch 1 taken 1 time. ✓ Branch 4 taken 1 time. ✓ Branch 8 taken 1 time.	3	EXPECT_CALL(cl, getLambdaError())
23	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(0.05f));
24
25	1/1 ✓ Branch 1 taken 1 time.	1	cl.update(0.1f, true);
26
27			// Should be zero adjustment
28	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(cl.getAdjustment(), 1.0f);
29		2	}
30
31		4	TEST(ClosedLoopFuelCell, AdjustRate) {
32	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockClCell> cl;
33
34	3/3 ✓ Branch 1 taken 1 time. ✓ Branch 4 taken 1 time. ✓ Branch 8 taken 1 time.	3	EXPECT_CALL(cl, getLambdaError())
35	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(0.1f));
36	3/3 ✓ Branch 1 taken 1 time. ✓ Branch 4 taken 1 time. ✓ Branch 8 taken 1 time.	3	EXPECT_CALL(cl, getMinAdjustment())
37	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(-0.2f));
38	3/3 ✓ Branch 1 taken 1 time. ✓ Branch 4 taken 1 time. ✓ Branch 8 taken 1 time.	3	EXPECT_CALL(cl, getMaxAdjustment())
39	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(0.2f));
40	3/3 ✓ Branch 1 taken 1 time. ✓ Branch 4 taken 1 time. ✓ Branch 8 taken 1 time.	3	EXPECT_CALL(cl, getIntegratorGain())
41	3/3 ✓ Branch 5 taken 1 time. ✓ Branch 8 taken 1 time. ✓ Branch 11 taken 1 time.	3	.WillOnce(Return(2.0f));
42
43	1/1 ✓ Branch 1 taken 1 time.	1	cl.update(0.0f, false);
44
45			// Should have integrated 0.2 * dt
46			// dt = 1000.0f / FAST_CALLBACK_PERIOD_MS
47	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 6 taken 1 time. ✗ Branch 9 not taken. ✓ Branch 10 taken 1 time. ✗ Branch 13 not taken. ✗ Branch 18 not taken. ✗ Branch 21 not taken.	1	EXPECT_FLOAT_EQ(cl.getAdjustment(), 1 + (0.2f / (1000.0f / FAST_CALLBACK_PERIOD_MS)));
48		2	}
49
50		4	TEST(ClosedLoopFuel, CellSelection) {
51		1	ShortTermFuelTrim stft;
52		1	stft_s cfg;
53
54			// Sensible region config
55		1	cfg.maxIdleRegionRpm = 1500;
56		1	cfg.minPowerLoad = 80;
57		1	cfg.maxOverrunLoad = 30;
58
59	1/1 ✓ Branch 1 taken 1 time.	1	stft.init(&cfg);
60
61			// Test idle
62	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, stft.computeStftBin(1000, 10, cfg));
63	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, stft.computeStftBin(1000, 50, cfg));
64	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, stft.computeStftBin(1000, 90, cfg));
65
66			// Test overrun
67	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(1u, stft.computeStftBin(2000, 10, cfg));
68	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(1u, stft.computeStftBin(4000, 10, cfg));
69	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(1u, stft.computeStftBin(10000, 10, cfg));
70
71			// Test load
72	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(2u, stft.computeStftBin(2000, 90, cfg));
73	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(2u, stft.computeStftBin(4000, 90, cfg));
74	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(2u, stft.computeStftBin(10000, 90, cfg));
75
76			// Main cell
77	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(3u, stft.computeStftBin(2000, 50, cfg));
78	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(3u, stft.computeStftBin(4000, 50, cfg));
79	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(3u, stft.computeStftBin(10000, 50, cfg));
80		1	}
81
82		4	TEST(ClosedLoopFuel, afrLimits) {
83		1	ShortTermFuelTrim stft;
84	1/1 ✓ Branch 2 taken 1 time.	1	EngineTestHelper eth(engine_type_e::TEST_ENGINE);
85
86		1	engineConfiguration->stft.minAfr = 10; // 10.0 AFR
87		1	engineConfiguration->stft.maxAfr = 18; // 18.0 AFR
88
89	1/1 ✓ Branch 1 taken 1 time.	1	stft.init(&engineConfiguration->stft);
90
91	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::Lambda1, 0.1f);
92	3/7 ✓ Branch 4 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_NE(stft.getLearningState(SensorType::Lambda1), stftEnabled);
93
94	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::Lambda1, 1.0f);
95	3/7 ✓ Branch 4 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(stft.getLearningState(SensorType::Lambda1), stftEnabled);
96
97	1/1 ✓ Branch 1 taken 1 time.	1	Sensor::setMockValue(SensorType::Lambda1, 2.0f);
98	3/7 ✓ Branch 4 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_NE(stft.getLearningState(SensorType::Lambda1), stftEnabled);
99		2	}
100