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test_chip8.c
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#include <chip8.h>
#include <unity.h>
CHIP8 *CHIP8_POINTER;
void setUp(void) { CHIP8_POINTER = init_chip8(); }
void tearDown(void) { free_memory(CHIP8_POINTER); }
void test_Should_Initialize_Chip8(void) {
TEST_ASSERT_NOT_NULL(CHIP8_POINTER);
for (int i = MEMORY_PROGRAM_START; i < MEMORY_SIZE; i++) {
TEST_ASSERT_EQUAL_HEX8(0x00, MEMORY(i));
}
for (int i = 0; i < REGISTERS_AMOUNT; i++) {
TEST_ASSERT_EQUAL_HEX8(0x00, REGISTER(i));
}
for (int i = 0; i < BITMAP_SIZE; i++) {
TEST_ASSERT_EQUAL_HEX8(0x00, FRAMEBUFFER(i));
}
TEST_ASSERT_EQUAL_HEX8(0x00, ADDRESS_REGISTER);
TEST_ASSERT_EQUAL_HEX8(0x00, PC);
}
void test_Step_Should_Increase_PC_By_Two(void) {
PC = MEMORY_PROGRAM_START;
STEP;
TEST_ASSERT_EQUAL_HEX16(MEMORY_PROGRAM_START + 2, PC);
}
void test_Should_Group_Opcodes(void) {
DECLARE_OPCODE_VAR
OPCODE_VAR = 0x0000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(0));
OPCODE_VAR = 0x00E0;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(0));
OPCODE_VAR = 0x00EE;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(0));
OPCODE_VAR = 0x1000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(1));
OPCODE_VAR = 0x2000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(2));
OPCODE_VAR = 0x3000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(3));
OPCODE_VAR = 0x4000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(4));
OPCODE_VAR = 0x5000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(5));
OPCODE_VAR = 0x6000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(6));
OPCODE_VAR = 0x7000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(7));
OPCODE_VAR = 0x8000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8001;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8002;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8003;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8004;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8005;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8006;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x8007;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x800E;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(8));
OPCODE_VAR = 0x9000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(9));
OPCODE_VAR = 0xA000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(A));
OPCODE_VAR = 0xB000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(B));
OPCODE_VAR = 0xC000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(C));
OPCODE_VAR = 0xD000;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(D));
OPCODE_VAR = 0xE09E;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(E));
OPCODE_VAR = 0xE0A1;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(E));
OPCODE_VAR = 0xF007;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF00A;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF015;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF018;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF01E;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF029;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF033;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF055;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
OPCODE_VAR = 0xF065;
TEST_ASSERT_TRUE(IS_OPCODE_GROUP(F));
}
void test_Should_Parse_Opcodes(void) {
DECLARE_OPCODE_VAR;
OPCODE_VAR = 0x1234;
TEST_ASSERT_EQUAL_HEX16_MESSAGE(NNN, 0x234, "NNN parsing incorrect.");
TEST_ASSERT_EQUAL_HEX16_MESSAGE(NN, 0x034, "NN parsing incorrect.");
TEST_ASSERT_EQUAL_HEX16_MESSAGE(N, 0x004, "N parsing incorrect.");
TEST_ASSERT_EQUAL_HEX16_MESSAGE(VX, 0x002, "VX parsing incorrect.");
TEST_ASSERT_EQUAL_HEX16_MESSAGE(VY, 0x003, "VY parsing incorrect.");
}
void test_Should_Fetch_Opcode_From_PC(void) {
PC = MEMORY_PROGRAM_START;
MEMORY(MEMORY_PROGRAM_START + 0) = 0x12;
MEMORY(MEMORY_PROGRAM_START + 1) = 0x00;
MEMORY(MEMORY_PROGRAM_START + 2) = 0x64;
MEMORY(MEMORY_PROGRAM_START + 3) = 0x15;
TEST_ASSERT_EQUAL_HEX16_MESSAGE(0x1200, fetch_opcode(CHIP8_POINTER),
"Wrong opcode fetched from PC");
STEP;
TEST_ASSERT_EQUAL_HEX16_MESSAGE(0x6415, fetch_opcode(CHIP8_POINTER),
"Wrong opcode fetched from PC");
}
void test_Should_Determine_Most_Significant_Bit(void) {
REGISTER(V0) = 0b00000001;
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x00, MSB(V0), "Wrong MSB(x) calculation.");
REGISTER(V0) = 0b10000000;
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x01, MSB(V0), "Wrong MSB(x) calculation.");
}
void test_Should_Determine_Least_Significant_Bit(void) {
REGISTER(V0) = 0b00000001;
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x01, LSB(V0), "Wrong LSB(x) calculation.");
REGISTER(V0) = 0b10000000;
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x00, LSB(V0), "Wrong LSB(x) calculation.");
}
void test_Instruction_0NNN() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_00E0() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_00EE() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_1NNN() {
PC = 0x000;
f_1NNN(CHIP8_POINTER, (uint16_t)0x1200);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(0x0200, PC, "Jumped to wrong address.");
f_1NNN(CHIP8_POINTER, (uint16_t)0x1E01);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(0x0E01, PC, "Jumped to wrong address.");
}
void test_Instruction_2NNN() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_3XNN() {
PC = MEMORY_PROGRAM_START;
REGISTER(V0) = 0x01;
f_3XNN(CHIP8_POINTER, 0x30FF);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START, PC,
"Wrong PC calculation result.");
f_3XNN(CHIP8_POINTER, 0x3001);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START + 2, PC,
"Wrong PC calculation result.");
}
void test_Instruction_4XNN() {
PC = MEMORY_PROGRAM_START;
REGISTER(V0) = 0x01;
f_4XNN(CHIP8_POINTER, 0x4001);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START, PC,
"Wrong PC calculation result.");
f_4XNN(CHIP8_POINTER, 0x40FF);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START + 2, PC,
"Wrong PC calculation result.");
}
void test_Instruction_5XY0() {
PC = MEMORY_PROGRAM_START;
REGISTER(V0) = 0x01;
REGISTER(V1) = 0x00;
f_5XY0(CHIP8_POINTER, 0x5010);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START, PC,
"Wrong PC calculation result.");
REGISTER(V1) = 0x01;
f_5XY0(CHIP8_POINTER, 0x5010);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START + 2, PC,
"Wrong PC calculation result.");
}
void test_Instruction_6XNN() {
f_6XNN(CHIP8_POINTER, (uint16_t)0x6010);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x10, REGISTER(V0),
"Wrong Vx == NN instruction.");
f_6XNN(CHIP8_POINTER, (uint16_t)0x6501);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x01, REGISTER(V5),
"Wrong Vx == NN instruction.");
f_6XNN(CHIP8_POINTER, (uint16_t)0x6FCF);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0xCF, REGISTER(VF),
"Wrong Vx == NN instruction.");
}
void test_Instruction_7XNN() {
REGISTER(V0) = 0x01;
REGISTER(V1) = 0x01;
REGISTER(V2) = 0xFF;
f_7XNN(CHIP8_POINTER, (uint16_t)0x7001);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x02, REGISTER(V0),
"Wrong Vx += NN instruction.");
f_7XNN(CHIP8_POINTER, (uint16_t)0x7001);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x03, REGISTER(V0),
"Wrong Vx += NN instruction.");
f_7XNN(CHIP8_POINTER, (uint16_t)0x71FF);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x03, REGISTER(V0),
"Wrong Vx += NN instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x00, REGISTER(V1),
"Wrong Vx += NN instruction.");
f_7XNN(CHIP8_POINTER, (uint16_t)0x7200);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0xFF, REGISTER(V2),
"Wrong Vx += NN instruction.");
}
void test_Instruction_8XY0() {
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x01;
f_8XY0(CHIP8_POINTER, (uint16_t)0x8010);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(REGISTER(V1), REGISTER(V0),
"Wrong Vx == Vy instruction.");
REGISTER(VF) = 0xFF;
f_8XY0(CHIP8_POINTER, (uint16_t)0x81F0);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(REGISTER(VF), REGISTER(V1),
"Wrong Vx == Vy instruction.");
}
void test_Instruction_8XY1() {
REGISTER(V0) = 0b00000001;
REGISTER(V1) = 0b10000000;
f_8XY1(CHIP8_POINTER, 0x8011);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0b10000001, REGISTER(V0),
"Wrong Vx |= Vy instruction.");
REGISTER(V2) = 0b10010001;
f_8XY1(CHIP8_POINTER, 0x8021);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0b10010001, REGISTER(V0),
"Wrong Vx |= Vy instruction.");
}
void test_Instruction_8XY2() {
REGISTER(V0) = 0b00000001;
REGISTER(V1) = 0b10000000;
f_8XY2(CHIP8_POINTER, 0x8012);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0b00000000, REGISTER(V0),
"Wrong Vx &= Vy instruction.");
REGISTER(V0) = 0b00010001;
REGISTER(V2) = 0b10010001;
f_8XY2(CHIP8_POINTER, 0x8022);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0b00010001, REGISTER(V0),
"Wrong Vx &= Vy instruction.");
}
void test_Instruction_8XY3() {
REGISTER(V0) = 0b00000001;
REGISTER(V1) = 0b10000000;
f_8XY3(CHIP8_POINTER, 0x8013);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0b10000001, REGISTER(V0),
"Wrong Vx ^= Vy instruction.");
REGISTER(V0) = 0b00010001;
REGISTER(V2) = 0b10010001;
f_8XY3(CHIP8_POINTER, 0x8023);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0b10000000, REGISTER(V0),
"Wrong Vx ^= Vy instruction.");
}
void test_Instruction_8XY4() {
REGISTER(V0) = 0x01;
REGISTER(V1) = 0x01;
REGISTER(VF) = NO_CARRY;
f_8XY4(CHIP8_POINTER, 0x8014);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x02, REGISTER(V0),
"Wrong Vx = Vx + Vy instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(NO_CARRY, REGISTER(VF), "Wrong carry set.");
REGISTER(V2) = 0xFF;
f_8XY4(CHIP8_POINTER, 0x8124);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x00, REGISTER(V1),
"Wrong Vx = Vx + Vy instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(CARRY, REGISTER(VF), "Wrong carry set.");
}
void test_Instruction_8XY5() {
REGISTER(V0) = 0x03;
REGISTER(V1) = 0x01;
f_8XY5(CHIP8_POINTER, 0x8015);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x02, REGISTER(V0),
"Wrong Vx = Vx - Vy instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(NO_CARRY, REGISTER(VF), "Wrong carry set.");
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x01;
f_8XY5(CHIP8_POINTER, 0x8015);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0xFF, REGISTER(V0),
"Wrong Vx = Vx - Vy instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(CARRY, REGISTER(VF), "Wrong carry set.");
}
void test_Instruction_8XY6() {
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x81; // 1000 0001
f_8XY6(CHIP8_POINTER, 0x8016);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x40, REGISTER(V0),
"Wrong Vx = Vy >> 1 instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x01, REGISTER(VF),
"Wrong LSB(Vy) calculation.");
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x90; // 1001 0000
f_8XY6(CHIP8_POINTER, 0x8016);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x48, REGISTER(V0),
"Wrong Vx = Vy >> 1 instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x00, REGISTER(VF),
"Wrong LSB(Vy) calculation.");
}
void test_Instruction_8XY7() {
REGISTER(V0) = 0x03;
REGISTER(V1) = 0x01;
f_8XY7(CHIP8_POINTER, 0x8017);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0xFE, REGISTER(V0),
"Wrong Vx = Vy - Vx instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(CARRY, REGISTER(VF), "Wrong carry set.");
REGISTER(V0) = 0x01;
REGISTER(V1) = 0x02;
f_8XY7(CHIP8_POINTER, 0x8017);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x01, REGISTER(V0),
"Wrong Vx = Vy - Vx instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(NO_CARRY, REGISTER(VF), "Wrong carry set.");
}
void test_Instruction_8XYE() {
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x81; // 1000 0001
f_8XYE(CHIP8_POINTER, 0x801E);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x02, REGISTER(V0),
"Wrong Vx = Vy << 1 instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x01, REGISTER(VF),
"Wrong MSB(Vy) calculation.");
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x05; // 0000 0101
f_8XYE(CHIP8_POINTER, 0x801E);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x0A, REGISTER(V0),
"Wrong Vx = Vy << 1 instruction.");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(0x00, REGISTER(VF),
"Wrong MSB(Vy) calculation.");
}
void test_Instruction_9XY0() {
PC = MEMORY_PROGRAM_START;
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x00;
f_9XY0(CHIP8_POINTER, 0x9010);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START, PC,
"Wrong PC position after instruction call.");
PC = MEMORY_PROGRAM_START;
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x01;
f_9XY0(CHIP8_POINTER, 0x9010);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(MEMORY_PROGRAM_START + 2, PC,
"Wrong PC position after instruction call.");
}
void test_Instruction_ANNN() {
ADDRESS_REGISTER = 0x0000;
f_ANNN(CHIP8_POINTER, 0xA100);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(0x100, ADDRESS_REGISTER,
"Wrong Address Register value");
}
void test_Instruction_BNNN() {
PC = MEMORY_PROGRAM_START;
REGISTER(V0) = 0x01;
f_BNNN(CHIP8_POINTER, 0xB300);
TEST_ASSERT_EQUAL_HEX16_MESSAGE(
0x301, PC, "Wrong address calculation in PC = Vx + NNN.");
}
void test_Instruction_CXNN() {
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x00;
REGISTER(V2) = 0x00;
for (int i = 0; i <= 1000; i++) {
f_CXNN(CHIP8_POINTER, 0xC010);
TEST_ASSERT_INT8_WITHIN_MESSAGE(0x10, 0x00, REGISTER(V0),
"CXNN calculated wrong random number.");
}
for (int i = 0; i <= 1000; i++) {
f_CXNN(CHIP8_POINTER, 0xC150);
TEST_ASSERT_INT8_WITHIN_MESSAGE(0x50, 0x00, REGISTER(V1),
"CXNN calculated wrong random number.");
}
for (int i = 0; i <= 1000; i++) {
f_CXNN(CHIP8_POINTER, 0xC2FF);
TEST_ASSERT_INT8_WITHIN_MESSAGE(0xFF, 0x00, REGISTER(V2),
"CXNN calculated wrong random number.");
}
}
void test_Instruction_DXYN() {
/*
Two rows - one-byte sprite insert (11111111 00000000)
*/
REGISTER(V0) = 0x00;
REGISTER(V1) = 0x04;
REGISTER(VF) = 0x00;
for (uint8_t i = 0; i < 0x0F; i++) {
MEMORY(0x900 + i) = 0xFF;
}
ADDRESS_REGISTER = 0x900;
f_DXYN(CHIP8_POINTER, 0xD01F);
for (uint8_t i = 0; i < 0x0F; i++) {
printf(" (1byte) %d\n", i);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0xFF, FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), REGISTER(V1) + i)),
"(1 byte) Framebuffer wrong sprite set from I");
}
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x00, REGISTER(VF),
"(1 byte) Registered pixel collision but there was none");
f_DXYN(CHIP8_POINTER, 0xD01F);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x00, FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), REGISTER(V1))),
"(1 byte) Framebuffer sprite did not clear pixels unerneath");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x01, REGISTER(VF),
"Pixel collision not registered in VF");
/*
Two rows - two-byte sprite insert (00001111 11110000)
*/
REGISTER(V0) = 0x0C;
REGISTER(V1) = 0x04;
REGISTER(VF) = 0x00;
MEMORY(0x900) = 0xFF;
MEMORY(0x900 + 1) = 0xFF;
ADDRESS_REGISTER = 0x900;
f_DXYN(CHIP8_POINTER, 0xD012);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x0f, FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), REGISTER(V1))),
"(2 bytes) Framebuffer wrong sprite set from I+0");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0xf0,
FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0) + 8, REGISTER(V1))),
"(2 bytes) Framebuffer wrong sprite set from I+0 (wrapped to right "
"byte)");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x0f,
FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), REGISTER(V1) + 1)),
"(2 bytes) Framebuffer wrong sprite set from I+1");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0xf0,
FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0) + 8, REGISTER(V1) + 1)),
"(2 bytes) Framebuffer wrong sprite set from I+1 (wrapped to right "
"byte)");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x00, REGISTER(VF),
"(2 bytes) Registered pixel collision but there was none");
f_DXYN(CHIP8_POINTER, 0xD012);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x00, FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), REGISTER(V1))),
"(2 bytes) Framebuffer sprite did not clear pixels unerneath");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x01, REGISTER(VF),
"(2 bytes) Pixel collision not registered in VF");
/*
Two rows - two-byte sprite insert (wrap pixels around display horizontally & vertically)
*/
REGISTER(V0) = 0x3C;
REGISTER(V1) = 0x1F;
REGISTER(VF) = 0x00;
MEMORY(0x900) = 0xFF;
MEMORY(0x900 + 1) = 0xFF;
ADDRESS_REGISTER = 0x900;
f_DXYN(CHIP8_POINTER, 0xD012);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x0f, FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), REGISTER(V1))),
"(lower-right) Framebuffer wrong sprite set from I+0");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0xf0,
FRAMEBUFFER(xy_to_framebuffer_index(0, REGISTER(V1))),
"(lower-left) Framebuffer wrong sprite set from I+0 (wrapped to right "
"byte)");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x0f,
FRAMEBUFFER(xy_to_framebuffer_index(REGISTER(V0), 0)),
"(upper-right) Framebuffer wrong sprite set from I+1");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0xf0,
FRAMEBUFFER(xy_to_framebuffer_index(0, 0)),
"(upper-left) Framebuffer wrong sprite set from I+1 (wrapped to right "
"byte)");
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x00, REGISTER(VF),
"(wrap) Registered pixel collision but there was none");
f_DXYN(CHIP8_POINTER, 0xD012);
TEST_ASSERT_EQUAL_HEX8_MESSAGE(
0x01, REGISTER(VF),
"(wrap) Pixel collision not registered in VF");
}
void test_Instruction_EX9E() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_EXA1() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX07() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX0A() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX15() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX18() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX1E() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX29() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX33() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX55() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
void test_Instruction_FX65() {
TEST_ASSERT_TRUE_MESSAGE(0 == 1, "Not implemented");
}
int main(void) {
UNITY_BEGIN();
RUN_TEST(test_Should_Initialize_Chip8);
RUN_TEST(test_Step_Should_Increase_PC_By_Two);
RUN_TEST(test_Should_Group_Opcodes);
RUN_TEST(test_Should_Parse_Opcodes);
RUN_TEST(test_Should_Fetch_Opcode_From_PC);
RUN_TEST(test_Should_Determine_Most_Significant_Bit);
RUN_TEST(test_Should_Determine_Least_Significant_Bit);
/* Run a test for each Chip8 instruction */
#define OP(x) RUN_TEST(test_Instruction_##x);
CHIP8_INSTR_SET
#undef OP
return UNITY_END();
}