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#include "unity.h"
#include "Types.h"
#include "TemperatureFilter.h"
#include <math.h>
void setUp(void)
{
TemperatureFilter_Init();
}
void tearDown(void)
{
}
void testShouldInitializeTemeratureToInvalidValue(void)
{
TemperatureFilter_Init();
TEST_ASSERT_FLOAT_WITHIN(0.0001f, -INFINITY, TemperatureFilter_GetTemperatureInCelcius());
}
void testShouldInitializeTemperatureAfterCallToInit(void)
{
TemperatureFilter_Init();
TemperatureFilter_ProcessInput(17.8f);
TEST_ASSERT_FLOAT_WITHIN(0.0001f, 17.8f, TemperatureFilter_GetTemperatureInCelcius());
TemperatureFilter_Init();
TemperatureFilter_ProcessInput(32.6f);
TEST_ASSERT_FLOAT_WITHIN(0.0001f, 32.6f, TemperatureFilter_GetTemperatureInCelcius());
}
void setValueAndVerifyResponse(float input, float response)
{
float actual;
TemperatureFilter_ProcessInput(input);
actual = TemperatureFilter_GetTemperatureInCelcius();
TEST_ASSERT_FLOAT_WITHIN(0.0001f, response, actual);
}
void testShouldWeightEachSubsequentValueBy25PercentAfterInitialValue(void)
{
TemperatureFilter_Init();
setValueAndVerifyResponse(0.0f, 0.0f);
setValueAndVerifyResponse(10.0f, 2.5f);
setValueAndVerifyResponse(10.0f, 4.375f);
setValueAndVerifyResponse(10.0f, 5.78125f);
TemperatureFilter_Init();
setValueAndVerifyResponse(100.0f, 100.0f);
setValueAndVerifyResponse(0.0f, 75.0f);
setValueAndVerifyResponse(0.0f, 56.25f);
setValueAndVerifyResponse(0.0f, 42.1875f);
}
void setInvalidTemperatureAndVerifyReinitialized(float invalidTemperature)
{
TemperatureFilter_Init();
setValueAndVerifyResponse(100.0f, 100.0f);
setValueAndVerifyResponse(invalidTemperature, -INFINITY);
setValueAndVerifyResponse(14.3f, 14.3f);
}
void testShouldResetAverageIfPassedInfinityOrInvalidValue(void)
{
setInvalidTemperatureAndVerifyReinitialized(-INFINITY);
setInvalidTemperatureAndVerifyReinitialized(+INFINITY);
setInvalidTemperatureAndVerifyReinitialized(+NAN);
setInvalidTemperatureAndVerifyReinitialized(-NAN);
}
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