176 lines
4.0 KiB
C++
176 lines
4.0 KiB
C++
/*
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* Author: Jake G
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* Date: 2024
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* filename: test_ADC.c
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* description: module_purpose
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*/
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#include "CppUTest/CommandLineTestRunner.h"
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#include "CppUTestExt/MockSupport.h"
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#include <cstdint>
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//This define allows us to dircetly include the device header without error.
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#define _AVR_IO_H_
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extern "C"
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{
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#include <iotn404.h> //ATtiny404 header fille.
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#include "ADC.h"
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}
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TEST_GROUP(test_ADC)
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{
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void setup()
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{
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}
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void teardown()
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{
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mock().checkExpectations();
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mock().clear();
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}
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};
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TEST(test_ADC, FirstTest)
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{
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CHECK(true);
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}
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static void ADCStoresPortState(void){
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mock().expectOneCall("RegEdit_ReadReg")
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.withPointerParameter("reg", (void *) &PORTA.OUT)
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.andReturnValue(0xFF);
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mock().expectOneCall("RegEdit_ReadReg")
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.withPointerParameter("reg", (void *) &PORTA.DIR)
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.andReturnValue(0xFF);
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}
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TEST(test_ADC, ADC_InitPortAPin7UsesCorrectRegisters)
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{
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ADCStoresPortState();
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//Check for setting the direction to input.
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &PORTA.DIRCLR)
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.withUnsignedIntParameter("bit_num", 7);
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//Check that the pullup is off
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &PORTA.OUTCLR)
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.withUnsignedIntParameter("bit_num", 7);
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//Set the ISC(input sense config) to disable digital input
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//buffering and reduce the noise on ADC usage.
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &PORTA.PIN7CTRL)
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.withUnsignedIntParameter("bit_num", PORT_ISC_INPUT_DISABLE_gc);
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ADC_Init(7);
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}
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TEST(test_ADC, ADC_InitPortAPin0UsesCorrectRegisters)
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{
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ADCStoresPortState();
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//Check for setting the direction to input.
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &PORTA.DIRCLR)
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.withUnsignedIntParameter("bit_num", 0);
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//Check that the pullup is off
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &PORTA.OUTCLR)
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.withUnsignedIntParameter("bit_num", 0);
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//Set the ISC(input sense config) to disable digital input
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//buffering and reduce the noise on ADC usage.
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &PORTA.PIN0CTRL)
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.withUnsignedIntParameter("bit_num", PORT_ISC_INPUT_DISABLE_gc);
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ADC_Init(0);
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}
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TEST(test_ADC, ADC_InitDoesNothingOnHighPinNumbers)
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{
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mock().expectNoCall("RegEdit_SetBit");
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ADC_Init(8);
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}
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TEST(test_ADC, ADC_EnableSuccessOnPin7)
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{
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//Set the MUXPOS or the ADC pin stuff.
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mock().expectOneCall("RegEdit_OR_Num")
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.withPointerParameter("reg", (void *) &ADC0.MUXPOS)
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.withUnsignedIntParameter("num", ADC_MUXPOS_AIN7_gc);
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mock().expectOneCall("RegEdit_SetBit")
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.withPointerParameter("reg", (void *) &ADC0.CTRLA)
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.withUnsignedIntParameter("bit_num", 0);
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ADC_Enable(7);
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}
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TEST(test_ADC, ADC_EnableNothingOnHighPinNumbers)
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{
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mock().expectNoCall("RegEdit_SetBit");
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ADC_Enable(8);
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}
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TEST(test_ADC, ADC_DisablePasses)
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{
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//Clears the muxpos register
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mock().expectOneCall("RegEdit_ClearRegister")
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.withPointerParameter("reg", (void *) &ADC0.MUXPOS);
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mock().expectOneCall("RegEdit_ClearBit")
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.withPointerParameter("reg", (void *) &ADC0.CTRLA)
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.withUnsignedIntParameter("bit_num", 0);
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mock().expectOneCall("RegEdit_SetNum")
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.withPointerParameter("reg", (void*) &PORTA.OUT)
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.ignoreOtherParameters();
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mock().expectOneCall("RegEdit_SetNum")
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.withPointerParameter("reg", (void*) &PORTA.DIR)
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.ignoreOtherParameters();
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ADC_Disable();
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}
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static uint16_t ADC_ReadValueFake(uint8_t pin_num)
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{
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return 512;
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}
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TEST_GROUP(test_ADCRead)
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{
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void setup()
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{
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UT_PTR_SET(ADC_ReadValue, ADC_ReadValueFake);
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}
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void teardown()
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{
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}
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};
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TEST(test_ADCRead, FunctionPointerSwapWorks)
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{
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uint16_t value = ADC_ReadValue(0);
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LONGS_EQUAL(512, value);
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}
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