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123 lines
2.7 KiB
C
123 lines
2.7 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_arith, .init = setup, .fini = teardown);
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Test(mos6502_arith, adc)
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{
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cpu->A = 5;
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mos6502_handle_adc(cpu, 3);
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cr_assert_eq(cpu->A, 8);
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cpu->P |= MOS_CARRY;
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mos6502_handle_adc(cpu, 64);
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cr_assert_eq(cpu->A, 73);
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}
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Test(mos6502_arith, cmp)
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{
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cpu->A = 5;
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mos6502_handle_cmp(cpu, 3);
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cr_assert_eq(cpu->P & MOS_CARRY, MOS_CARRY);
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cr_assert_eq(cpu->P & MOS_NEGATIVE, 0);
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cr_assert_eq(cpu->P & MOS_ZERO, 0);
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cpu->A = 3;
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mos6502_handle_cmp(cpu, 3);
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cr_assert_eq(cpu->P & MOS_CARRY, 0);
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cr_assert_eq(cpu->P & MOS_NEGATIVE, 0);
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cr_assert_eq(cpu->P & MOS_ZERO, MOS_ZERO);
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cpu->A = 192;
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mos6502_handle_cmp(cpu, 3);
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cr_assert_eq(cpu->P & MOS_CARRY, MOS_CARRY);
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cr_assert_eq(cpu->P & MOS_NEGATIVE, MOS_NEGATIVE);
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cr_assert_eq(cpu->P & MOS_ZERO, 0);
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}
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Test(mos6502_arith, cpx)
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{
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cpu->X = 5;
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mos6502_handle_cpx(cpu, 3);
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cr_assert_eq(cpu->P & MOS_CARRY, MOS_CARRY);
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cr_assert_eq(cpu->P & MOS_NEGATIVE, 0);
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cr_assert_eq(cpu->P & MOS_ZERO, 0);
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}
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Test(mos6502_arith, cpy)
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{
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cpu->Y = 5;
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mos6502_handle_cpy(cpu, 3);
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cr_assert_eq(cpu->P & MOS_CARRY, MOS_CARRY);
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cr_assert_eq(cpu->P & MOS_NEGATIVE, 0);
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cr_assert_eq(cpu->P & MOS_ZERO, 0);
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}
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Test(mos6502_arith, dec)
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{
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// Note that DEC does NOT decrement the accumulator if the last
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// address is not set. It does _nothing_.
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cpu->A = 5;
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mos6502_handle_dec(cpu, 0);
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cr_assert_neq(cpu->A, 4);
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cpu->last_addr = 123;
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vm_segment_set(cpu->memory, 123, 44);
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// Note _also_ that DEC expects the number to be decremented will be
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// passed in as the effective operand, although it doesn't
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// necessarily need for that to be so.
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mos6502_handle_dec(cpu, 44);
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cr_assert_eq(vm_segment_get(cpu->memory, 123), 43);
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}
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Test(mos6502_arith, dex)
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{
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cpu->X = 5;
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mos6502_handle_dex(cpu, 0);
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cr_assert_eq(cpu->X, 4);
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}
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Test(mos6502_arith, dey)
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{
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cpu->Y = 5;
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mos6502_handle_dey(cpu, 0);
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cr_assert_eq(cpu->Y, 4);
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}
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Test(mos6502_arith, inc)
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{
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cpu->last_addr = 123;
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mos6502_handle_inc(cpu, 55);
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cr_assert_eq(vm_segment_get(cpu->memory, 123), 56);
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}
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Test(mos6502_arith, inx)
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{
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cpu->X = 5;
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mos6502_handle_inx(cpu, 0);
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cr_assert_eq(cpu->X, 6);
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}
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Test(mos6502_arith, iny)
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{
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cpu->Y = 5;
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mos6502_handle_iny(cpu, 0);
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cr_assert_eq(cpu->Y, 6);
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}
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Test(mos6502_arith, sbc)
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{
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cpu->A = 5;
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mos6502_handle_sbc(cpu, 3);
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cr_assert_eq(cpu->A, 2);
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cpu->P |= MOS_CARRY;
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cpu->A = 16;
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mos6502_handle_sbc(cpu, 8);
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cr_assert_eq(cpu->A, 7);
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}
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