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120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
#include <criterion/criterion.h>
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#include "mos6502.h"
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#include "mos6502.enums.h"
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#include "mos6502.tests.h"
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TestSuite(mos6502, .init = setup, .fini = teardown);
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Test(mos6502, create)
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{
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cr_assert_neq(cpu, NULL);
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cr_assert_eq(cpu->memory->size, MOS6502_MEMSIZE);
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cr_assert_eq(cpu->PC, 0);
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cr_assert_eq(cpu->A, 0);
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cr_assert_eq(cpu->X, 0);
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cr_assert_eq(cpu->Y, 0);
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cr_assert_eq(cpu->P, 0);
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cr_assert_eq(cpu->S, 0);
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}
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Test(mos6502, next_byte)
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{
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cpu->PC = 128;
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vm_segment_set(cpu->memory, cpu->PC, 123);
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vm_segment_set(cpu->memory, cpu->PC + 1, 234);
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vm_segment_set(cpu->memory, cpu->PC + 2, 12);
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cr_assert_eq(mos6502_next_byte(cpu), 123);
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cr_assert_eq(mos6502_next_byte(cpu), 234);
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cr_assert_eq(mos6502_next_byte(cpu), 12);
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}
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Test(mos6502, push_stack)
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{
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mos6502_push_stack(cpu, 0x1234);
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cr_assert_eq(vm_segment_get(cpu->memory, 0x0100), 0x12);
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cr_assert_eq(vm_segment_get(cpu->memory, 0x0101), 0x34);
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}
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Test(mos6502, pop_stack)
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{
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mos6502_push_stack(cpu, 0x1234);
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cr_assert_eq(mos6502_pop_stack(cpu), 0x1234);
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}
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Test(mos6502, modify_status)
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{
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mos6502_modify_status(cpu, MOS_NEGATIVE, 130);
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cr_assert_eq(cpu->P & MOS_NEGATIVE, MOS_NEGATIVE);
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mos6502_modify_status(cpu, MOS_NEGATIVE, 123);
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cr_assert_neq(cpu->P & MOS_NEGATIVE, MOS_NEGATIVE);
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mos6502_modify_status(cpu, MOS_OVERFLOW, 123);
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cr_assert_eq(cpu->P & MOS_OVERFLOW, MOS_OVERFLOW);
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mos6502_modify_status(cpu, MOS_OVERFLOW, 44);
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cr_assert_neq(cpu->P & MOS_OVERFLOW, MOS_OVERFLOW);
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mos6502_modify_status(cpu, MOS_CARRY, 23);
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cr_assert_eq(cpu->P & MOS_CARRY, MOS_CARRY);
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mos6502_modify_status(cpu, MOS_CARRY, 0);
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cr_assert_neq(cpu->P & MOS_CARRY, MOS_CARRY);
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mos6502_modify_status(cpu, MOS_ZERO, 0);
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cr_assert_eq(cpu->P & MOS_ZERO, MOS_ZERO);
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mos6502_modify_status(cpu, MOS_ZERO, 1);
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cr_assert_neq(cpu->P & MOS_ZERO, MOS_ZERO);
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}
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Test(mos6502, set_status)
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{
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mos6502_set_status(cpu, MOS_BREAK | MOS_INTERRUPT | MOS_DECIMAL);
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cr_assert_eq(cpu->P & (MOS_BREAK | MOS_INTERRUPT | MOS_DECIMAL), MOS_BREAK | MOS_INTERRUPT | MOS_DECIMAL);
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}
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Test(mos6502, instruction)
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{
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cr_assert_eq(mos6502_instruction(0x1D), ORA);
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cr_assert_eq(mos6502_instruction(0xD8), CLD);
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cr_assert_eq(mos6502_instruction(0x98), TYA);
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}
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Test(mos6502, cycles)
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{
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cr_assert_eq(mos6502_cycles(cpu, 0x76), 6);
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cr_assert_eq(mos6502_cycles(cpu, 0xBA), 2);
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// In this case, we aren't cross a page boundary, and the number of
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// cycles should stay at 4
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cpu->last_addr = 0x5070;
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cpu->X = 23;
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cr_assert_eq(mos6502_cycles(cpu, 0x1D), 4);
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// Testing that crossing a page boundary adds one to the number of
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// cycles
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cpu->X = 200;
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cr_assert_eq(mos6502_cycles(cpu, 0x1D), 5);
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}
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Test(mos6502, get_instruction_handler)
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{
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cr_assert_eq(mos6502_get_instruction_handler(0x00), mos6502_handle_brk);
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cr_assert_eq(mos6502_get_instruction_handler(0x1D), mos6502_handle_ora);
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cr_assert_eq(mos6502_get_instruction_handler(0x20), mos6502_handle_jsr);
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}
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Test(mos6502, execute)
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{
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vm_segment_set(cpu->memory, 0, 34);
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mos6502_execute(cpu, 0x69);
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cr_assert_eq(cpu->A, 34);
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}
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Test(mos6502, read_byte)
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{
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vm_segment_set(cpu->memory, 0, 0x54);
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cr_assert_eq(mos6502_read_byte(cpu), 0x54);
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}
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