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package cryptfs
import (
"fmt"
"testing"
)
type testRange struct {
offset uint64
length uint64
}
func TestSplitRange(t *testing.T) {
var ranges []testRange
ranges = append(ranges, testRange{0, 70000},
testRange{0, 10},
testRange{234, 6511},
testRange{65444, 54},
testRange{6654, 8945})
key := make([]byte, 16)
f := NewCryptFS(key, true)
for _, r := range ranges {
parts := f.SplitRange(r.offset, r.length)
for _, p := range parts {
if p.Length > DEFAULT_PLAINBS || p.Skip >= DEFAULT_PLAINBS {
fmt.Printf("Test fail: n=%d, length=%d, offset=%d\n", p.BlockNo, p.Length, p.Skip)
t.Fail()
}
}
}
}
func TestCiphertextRange(t *testing.T) {
var ranges []testRange
ranges = append(ranges, testRange{0, 70000},
testRange{0, 10},
testRange{234, 6511},
testRange{65444, 54},
testRange{6654, 8945})
key := make([]byte, 16)
f := NewCryptFS(key, true)
for _, r := range ranges {
alignedOffset, alignedLength, skipBytes := f.CiphertextRange(r.offset, r.length)
if alignedLength < r.length {
t.Fail()
}
if alignedOffset%f.cipherBS != 0 {
t.Fail()
}
if r.offset%f.plainBS != 0 && skipBytes == 0 {
t.Fail()
}
}
}
func TestBlockNo(t *testing.T) {
key := make([]byte, 16)
f := NewCryptFS(key, true)
b := f.BlockNoCipherOff(788)
if b != 0 {
t.Errorf("actual: %d", b)
}
b = f.BlockNoCipherOff(f.CipherBS())
if b != 1 {
t.Errorf("actual: %d", b)
}
b = f.BlockNoPlainOff(788)
if b != 0 {
t.Errorf("actual: %d", b)
}
b = f.BlockNoPlainOff(f.PlainBS())
if b != 1 {
t.Errorf("actual: %d", b)
}
}
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