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memory_tests.c
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memory_tests.c
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/**
* Copyright (C) 2013 Craig Thomas
* This project uses an MIT style license - see the LICENSE file for details.
*
* @file memory_tests.c
* @brief Functions to test emulator memory
* @author Craig Thomas
*/
/* I N C L U D E S ************************************************************/
#include "yacoco3e.h"
/******************************************************************************/
static char *
test_memory_init_memory_not_null(void)
{
printf("test_memory_init_memory_not_null\n");
mu_assert("Could not allocate memory", memory_init(4096));
mu_assert("Memory returned was NULL", memory != NULL);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_init_4096_correct_bits_set(void)
{
printf("test_memory_init_4096_correct_bits_set\n");
mu_assert("memory_size_bit_0 incorrect", memory_size_bit_0 == 0);
mu_assert("memory_size_bit_1 incorrect", memory_size_bit_0 == 0);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_init_zero_bytes_returns_false(void)
{
printf("test_memory_init_zero_bytes_returns_false\n");
mu_assert("Memory init succeeded", !memory_init(0));
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_init_negative_bytes_returns_false(void)
{
printf("test_memory_init_negative_bytes_returns_false\n");
mu_assert("Memory init succeeded", !memory_init(-10));
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_init_map_mode_set_to_zero(void)
{
printf("test_memory_init_map_mode_set_to_zero\n");
mu_assert("Memory init failed", memory_init(4096));
mu_assert("memory_map_mode not zero", memory_map_mode == 0);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_write_writes_correct_byte(void)
{
word location;
byte value = 0x12;
location.WORD = 0x100;
printf("test_memory_write_writes_correct_byte\n");
mu_assert("Memory init failed", memory_init(4096));
memory_write(location, value);
mu_assert("Write failed(expected 0x12)", memory[location.WORD] == 0x12);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_write_writes_to_byte_zero(void)
{
word location;
location.WORD = 0;
printf("test_memory_write_writes_to_byte_zero\n");
mu_assert("Memory init failed", memory_init(4096));
memory_write(location, 1);
mu_assert("Incorrect byte written", memory[0] == 1);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_write16_writes_correct_word(void)
{
word location, value;
location.WORD = 0x100;
printf("test_memory_write16_writes_correct_word\n");
mu_assert("Memory init failed", memory_init(4096));
value.BYTE.high = 0xE8;
value.BYTE.low = 0x12;
memory_write16(location, value);
mu_assert("Write failed(expected 0xE8)", memory[0x100] == 0xE8);
mu_assert("Write failed(expected 0x12)", memory[0x101] == 0x12);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_read_correct_byte(void)
{
word location;
location.WORD = 0x100;
printf("test_memory_read_correct_byte\n");
mu_assert("Memory init failed", memory_init(4096));
memory[location.WORD] = 0x12;
mu_assert("Read failed(expected 0x12)", memory[location.WORD] == 0x12);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_read16_read_correct_word(void)
{
word location, value;
location.WORD = 0x100;
printf("test_memory_read16_read_correct_word\n");
mu_assert("Memory init failed", memory_init(4096));
memory[location.WORD] = 0x12;
memory[location.WORD + 1] = 0x34;
value = memory_read16(location);
mu_assert("Read failed(expected 0x1234)", value.WORD == 0x1234);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_read_reset_vector_correct(void)
{
word address;
address.WORD = CPU_RESET_ADDR;
printf("test_memory_read_reset_vector_correct\n");
mu_assert("Could not allocate memory", memory_init(4096));
mu_assert("Incorrect PC high byte start address",
memory_read(address) == CPU_PC_START_HI);
address.WORD += 1;
mu_assert("Incorrect PC low byte start address",
memory_read(address) == CPU_PC_START_LO);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_less_than_4096(void)
{
printf("test_memory_less_than_4096\n");
mu_assert("Memory init failed", memory_init(512));
mu_assert("memory_size_bit_0 not 0", memory_size_bit_0 == 0);
mu_assert("memory_size_bit_1 not 0", memory_size_bit_0 == 0);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_16k(void)
{
printf("test_memory_16k\n");
mu_assert("Memory init failed", memory_init(16384));
mu_assert("memory_size_bit_0 not 1", memory_size_bit_0 == 1);
mu_assert("memory_size_bit_1 not 0", memory_size_bit_1 == 0);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_more_than_16k(void)
{
printf("test_memory_more_than_16k\n");
mu_assert("Memory init failed", memory_init(16385));
mu_assert("memory_size_bit_0 not 0", memory_size_bit_0 == 0);
mu_assert("memory_size_bit_1 not 1", memory_size_bit_1 == 1);
memory_destroy();
return 0;
}
/******************************************************************************/
static char *
test_memory_read_memory_size_bit_0(void)
{
printf("test_memory_read_memory_size_bit_0\n");
mu_assert("Memory init failed", memory_init(16384));
word location;
location.WORD = 0xFFDA;
mu_assert("Memory read at FFDA did not return 1", memory_read(location) == 1);
memory_destroy();
mu_assert("Memory init failed", memory_init(16385));
mu_assert("Memory read at FFDA did not return 0", memory_read(location) == 0);
memory_destroy();
return 0;
}
/******************************************************************************/
char *
memory_tests()
{
mu_run_test(test_memory_init_memory_not_null);
mu_run_test(test_memory_init_4096_correct_bits_set);
mu_run_test(test_memory_init_zero_bytes_returns_false);
mu_run_test(test_memory_init_negative_bytes_returns_false);
mu_run_test(test_memory_init_map_mode_set_to_zero);
mu_run_test(test_memory_write_writes_correct_byte);
mu_run_test(test_memory_write16_writes_correct_word);
mu_run_test(test_memory_write_writes_to_byte_zero);
mu_run_test(test_memory_read_correct_byte);
mu_run_test(test_memory_read16_read_correct_word);
mu_run_test(test_memory_read_reset_vector_correct);
mu_run_test(test_memory_less_than_4096);
mu_run_test(test_memory_16k);
mu_run_test(test_memory_more_than_16k);
mu_run_test(test_memory_read_memory_size_bit_0);
return 0;
}
/* E N D O F F I L E ******************************************************/