goapple2/videoscan/videoscan_test.go
2013-04-21 16:49:58 -07:00

271 lines
6.0 KiB
Go

package videoscan
import (
"testing"
)
type fakePlotter struct {
}
func (f *fakePlotter) Plot(PlotData) {
}
func (f *fakePlotter) OncePerFrame() {
}
// Memory for the tests. Satisfies the videoscan.RamReader interfaces.
type K64 [65536]byte
func (m *K64) RamRead(address uint16) byte {
return m[address]
}
func TestHorizontal(t *testing.T) {
var m K64
var f fakePlotter
s := NewScanner(&m, &f, [2048]byte{})
// 1000 Increments
for i := 0; i < 1000; i++ {
for j := 0; j < 25; j++ {
if s.column() >= 0 {
t.Errorf("Expected s.column() < 0, got %v", s.column())
}
s.Scan1()
}
for j := 0; j < 40; j++ {
if s.column() != j {
t.Errorf("Expected s.column()==%d, got %v", j, s.column())
}
s.Scan1()
}
}
}
func TestVertical(t *testing.T) {
var m K64
var f fakePlotter
s := NewScanner(&m, &f, [2048]byte{})
scan65 := func() {
for i := 0; i < 65; i++ {
s.Scan1()
}
}
// 1000 * 65 (per row) Increments
for i := 0; i < 1000; i++ {
for j := 0; j < 6; j++ {
if s.row() > 0 {
t.Errorf("Expected s.row() <= 0, got %v", s.row())
}
scan65()
}
for j := 0; j < 256; j++ {
if s.row() != j {
t.Errorf("Expected s.row() == %d, got %v", j, s.row())
}
scan65()
}
}
}
func TestBlanking(t *testing.T) {
var m K64
var f fakePlotter
s := NewScanner(&m, &f, [2048]byte{})
for i := 0; i < 1000000; i++ {
if s.column() < 0 || s.column() >= 40 {
if !s.hbl {
t.Errorf("s.column()==%d, but s.hbl=%v", s.column(), s.hbl)
}
} else {
if s.hbl {
t.Errorf("s.column()==%d, but s.hbl=%v", s.column(), s.hbl)
}
}
if s.row() < 0 || s.row() >= 192 {
if !s.vbl {
t.Errorf("s.row()==%d, but s.vbl=%v", s.row(), s.vbl)
}
} else {
if s.vbl {
t.Errorf("s.row()==%d, but s.vbl=%v", s.row(), s.vbl)
}
}
s.Scan1()
}
}
func TestSpecificLocationAddresses(t *testing.T) {
var m K64
var f fakePlotter
s := NewScanner(&m, &f, [2048]byte{})
// TEXT/LORES Page 1
text_lores_page1 := map[int]uint16{
0: 0x400,
5: 0x680,
8: 0x428,
16: 0x450,
14: 0x728,
19: 0x5D0,
20: 0x650,
21: 0x6D0,
22: 0x750,
23: 0x7D0,
}
// HIRES Page 1
hires := map[int]uint16{
0: 0x2000,
8: 0x2080,
64: 0x2028,
99: 0x2E28,
127: 0x3FA8,
128: 0x2050,
100: 0x3228,
159: 0x3DD0,
160: 0x2250,
170: 0x2AD0,
183: 0x3F50,
191: 0x3FD0,
}
s.SetMix(false)
s.SetGraphics(false)
s.SetHires(false)
for i := 0; i < 1000000; i++ {
s.Scan1()
row := s.row()
if addr, ok := text_lores_page1[row/8]; ok {
col := s.column()
if row >= 0 && col >= 0 && col < 40 {
addrplus := addr + uint16(col)
s.SetPage(1)
s.SetGraphics(false)
if addrplus != s.address() {
t.Fatalf("Row %d (%d), col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, row/8, col, addr, col, addrplus, s.address())
}
s.SetGraphics(true)
if addrplus != s.address() {
t.Fatalf("Row %d (%d), col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, row/8, col, addr, col, addrplus, s.address())
}
s.SetMix(true)
if addrplus != s.address() {
t.Fatalf("Row %d (%d), col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, row/8, col, addr, col, addrplus, s.address())
}
addr += 0x400
addrplus += 0x400
s.SetPage(2)
if addrplus != s.address() {
t.Fatalf("Row %d (%d), col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, row/8, col, addr, col, addrplus, s.address())
}
}
}
}
s.SetMix(false)
s.SetGraphics(true)
s.SetHires(true)
for i := 0; i < 1000000; i++ {
s.Scan1()
row := s.row()
if addr, ok := hires[row]; ok {
col := s.column()
if col >= 0 && col < 40 {
addrplus := addr + uint16(col)
s.SetPage(1)
if addrplus != s.address() {
t.Fatalf("Row %d, col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, col, addr, col, addrplus, s.address())
}
s.SetPage(2)
addr += 0x2000
addrplus += 0x2000
if addrplus != s.address() {
t.Fatalf("Row %d, col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, col, addr, col, addrplus, s.address())
}
}
}
}
// Mixed hires/text
s.SetPage(1)
s.SetMix(true)
s.SetGraphics(true)
s.SetHires(true)
for i := 0; i < 1000000; i++ {
s.Scan1()
row := s.row()
if row >= 160 {
if addr, ok := text_lores_page1[row/8]; ok {
col := s.column()
if row >= 0 && col >= 0 && col < 40 {
addrplus := addr + uint16(col)
if addrplus != s.address() {
t.Fatalf("Row %d (%d), col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, row/8, col, addr, col, addrplus, s.address())
}
}
}
} else {
if addr, ok := hires[row]; ok {
col := s.column()
if col >= 0 && col < 40 {
addrplus := addr + uint16(col)
if addrplus != s.address() {
t.Fatalf("Row %d, col %d, expected $%04X+$%02X=$%04X, got $%04X",
row, col, addr, col, addrplus, s.address())
}
}
}
}
}
}
func TestHiresConversion(t *testing.T) {
var m K64
var f fakePlotter
s := NewScanner(&m, &f, [2048]byte{})
s.SetMix(false)
s.SetGraphics(true)
s.SetHires(true)
hiresIn0 := []byte{0x03, 0x06, 0x0C, 0x18, 0x30}
hiresOut0 := []uint16{0xf, 0x3c, 0xf0, 0x3c0, 0xf00}
hiresIn1 := []byte{0x83, 0x86, 0x8C, 0x98, 0xB0}
hiresOut1 := []uint16{0x1e, 0x78, 0x1e0, 0x780, 0x1e00}
for i := range hiresIn0 {
s.lastBit = 0
out := s.hiresData(hiresIn0[i])
if out != hiresOut0[i] {
t.Errorf("Expected hiresData(0x%02X) to be %04X, got %04X", hiresIn0[i], hiresOut0[i], out)
}
s.lastBit = 1
out = s.hiresData(hiresIn0[i])
if out != hiresOut0[i] {
t.Errorf("Expected hiresData(0x%02X) to be %04X, got %04X", hiresIn0[i], hiresOut0[i], out)
}
}
for i := range hiresIn1 {
s.lastBit = 0
out := s.hiresData(hiresIn1[i])
if out != hiresOut1[i] {
t.Errorf("Expected hiresData(0x%02X) lb=0 to be %04X, got %04X", hiresIn1[i], hiresOut1[i], out)
}
s.lastBit = 1
out = s.hiresData(hiresIn1[i])
if out != hiresOut1[i]|1 {
t.Errorf("Expected hiresData(0x%02X) lb=1 to be %04X, got %04X", hiresIn1[i], hiresOut1[i]|1, out)
}
}
}