test_pressure.cpp File Reference

Unit tests for pressure.cpp. More...

#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <iostream>
#include <vector>
#include "../includes/pressure_utl.h"

Go to the source code of this file.

Classes
class	PressionTest
	Test Fixture to test the pression file. More...

Macros
#define	KPA_MMH2O   101.97162129779
#define	RATIO_VOLTAGE_DIVIDER   0.8192
#define	V_SUPPLY   5.08
#define	NEAR_EQUAL_DIFF   2

Functions
int16_t	convertSensor2PressureFloat (uint16_t sensorValue)
	Old converting function using floats. More...
	TEST_F (PressionTest, testConvertSensor2PressureCompWithFloat)
	Test convertSensor2Pressure with comparison with old floating point function. More...
	TEST_F (PressionTest, testConvertSensor2Pressure)
	Test convertSensor2Pressure with arbitrary values. More...

Detailed Description

Unit tests for pressure.cpp.

Copyright

Copyright (c) 2020 Makers For Life

Author

Makers For Life

Definition in file test_pressure.cpp.

Macro Definition Documentation

KPA_MMH2O

#define KPA_MMH2O   101.97162129779

Definition at line 16 of file test_pressure.cpp.

NEAR_EQUAL_DIFF

#define NEAR_EQUAL_DIFF   2

Definition at line 52 of file test_pressure.cpp.

RATIO_VOLTAGE_DIVIDER

#define RATIO_VOLTAGE_DIVIDER   0.8192

Definition at line 17 of file test_pressure.cpp.

V_SUPPLY

#define V_SUPPLY   5.08

Definition at line 18 of file test_pressure.cpp.

Function Documentation

convertSensor2PressureFloat()

int16_t convertSensor2PressureFloat

(

uint16_t

sensorValue

)

Old converting function using floats.

Definition at line 21 of file test_pressure.cpp.

                                                          {
    static float filteredVout = 0;
    double rawVout = sensorValue * 3.3 / 1024.0;
    filteredVout = filteredVout + (rawVout - filteredVout) * 0.2;
 
    // Voltage divider ratio
    double vOut = filteredVout / RATIO_VOLTAGE_DIVIDER;
 
    // Pressure converted to kPA
    double pressure = ((vOut / V_SUPPLY) - 0.04) / 0.09;
 
    if (pressure <= 0.0) {
        pressure = 0;
    }
 
    return pressure * KPA_MMH2O;
}

TEST_F() [1/2]

TEST_F	(	PressionTest	,
		testConvertSensor2Pressure
	)

Test convertSensor2Pressure with arbitrary values.

Definition at line 77 of file test_pressure.cpp.

                                                 {
    std::vector<uint16_t> outputTruth = {0, 0, 144, 984, 2182, 4545, 7839, 17762};
    std::vector<uint16_t> output;
 
    for (size_t i = 0; i < input.size(); i++) {
        output.push_back(convertSensor2Pressure(input[i]));
 
        std::cout << output.back() << std::endl;
    }
 
    ASSERT_THAT(output, testing::ElementsAreArray(outputTruth));
}

TEST_F() [2/2]

TEST_F	(	PressionTest	,
		testConvertSensor2PressureCompWithFloat
	)

Test convertSensor2Pressure with comparison with old floating point function.

Definition at line 57 of file test_pressure.cpp.

                                                              {
    std::vector<uint16_t> outputTruth;
    std::vector<uint16_t> output;
 
    for (size_t i = 0; i < input.size(); i++) {
        outputTruth.push_back(convertSensor2PressureFloat(input[i]));
        output.push_back(convertSensor2Pressure(input[i]));
 
        std::cout << outputTruth.back() << " " << output.back() << std::endl;
    }
 
    for (int i = 0; i < output.size(); i++) {
        ASSERT_LE(std::abs(outputTruth[i] - output[i]), 2);
    }
}