59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package disk
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import (
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"math/rand"
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"testing"
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)
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func TestPreNybble(t *testing.T) {
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var source [256]byte
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for i := range source {
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source[i] = byte(i)
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}
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target := PreNybble(source[:])
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for i := range target {
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if target[i] > 0x3F {
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t.Errorf("target[%d] too large: 0x%02X", i, target[i])
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}
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}
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}
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func TestPrePostNybble(t *testing.T) {
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var source [256]byte
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for i := range source {
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source[i] = byte(i)
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}
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target := PreNybble(source[:])
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sourceCheck := PostNybble(target[:])
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for i := range source {
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if source[i] != sourceCheck[i] {
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t.Errorf("source, sourceCheck differ at %d: 0x%02X != 0x%02X", i, source[i], sourceCheck[i])
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}
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}
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}
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func TestNybbleAndBack(t *testing.T) {
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var randomDosDisk [DOS_DISK_BYTES]byte
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for i := range randomDosDisk {
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randomDosDisk[i] = byte(rand.Intn(256))
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}
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sectorOrder := Dos33PhysicalToLogicalSectorMap
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tracks, err := dos16ToNybbleTracks(randomDosDisk[:], 0, DEFAULT_PRESYNC, DEFAULT_INTRASYNC, sectorOrder)
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if err != nil {
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t.Fatal(err)
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}
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nyb := NewNybble(tracks)
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bytesOut, err := NybbleToDos16(nyb, sectorOrder)
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if err != nil {
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t.Fatal(err)
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}
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if len(bytesOut) != DOS_DISK_BYTES {
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t.Fatalf("Expected %d bytes out as dos disk, got %d", DOS_DISK_BYTES, len(bytesOut))
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}
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for i := range bytesOut {
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if bytesOut[i] != randomDosDisk[i] {
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t.Fatalf("Difference at %d: %d should be %d", i, bytesOut[i], randomDosDisk[i])
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}
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}
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}
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