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|
package id_test
import (
"bytes"
"strings"
"testing"
"codeberg.org/lindenii/furgit/object/id"
)
func TestFromBytesErrors(t *testing.T) {
t.Parallel()
_, err := id.FromBytes(id.AlgorithmUnknown, []byte{1, 2})
if err == nil {
t.Fatalf("expected FromBytes unknown algo error")
}
for _, algo := range id.SupportedAlgorithms() {
_, err = id.FromBytes(algo, []byte{1, 2})
if err == nil {
t.Fatalf("expected FromBytes wrong size error")
}
}
}
func TestBytesReturnsCopy(t *testing.T) {
t.Parallel()
for _, algo := range id.SupportedAlgorithms() {
id, err := id.FromHex(algo, strings.Repeat("01", algo.Size()))
if err != nil {
t.Fatalf("ParseHex failed: %v", err)
}
b1 := id.Bytes()
b2 := id.Bytes()
if !bytes.Equal(b1, b2) {
t.Fatalf("Bytes mismatch")
}
b1[0] ^= 0xff
if bytes.Equal(b1, b2) {
t.Fatalf("Bytes should return independent copies")
}
}
}
func TestFromHexErrors(t *testing.T) {
t.Parallel()
t.Run("unknown algo", func(t *testing.T) {
t.Parallel()
_, err := id.FromHex(id.AlgorithmUnknown, "00")
if err == nil {
t.Fatalf("expected FromHex error")
}
})
// TODO: This may need to be revisited when hash-function-transition is implemented.
for _, algo := range id.SupportedAlgorithms() {
t.Run(algo.String(), func(t *testing.T) {
t.Parallel()
_, err := id.FromHex(algo, strings.Repeat("0", algo.HexLen()-1))
if err == nil {
t.Fatalf("expected FromHex odd-len error")
}
_, err = id.FromHex(algo, strings.Repeat("0", algo.HexLen()-2))
if err == nil {
t.Fatalf("expected FromHex wrong-len error")
}
_, err = id.FromHex(algo, "z"+strings.Repeat("0", algo.HexLen()-1))
if err == nil {
t.Fatalf("expected FromHex invalid-hex error")
}
})
}
}
func TestFromHexRoundtrip(t *testing.T) {
t.Parallel()
for _, algo := range id.SupportedAlgorithms() {
t.Run(algo.String(), func(t *testing.T) {
t.Parallel()
hex := strings.Repeat("01", algo.Size())
i, err := id.FromHex(algo, hex)
if err != nil {
t.Fatalf("FromHex failed: %v", err)
}
if got := i.String(); got != hex {
t.Fatalf("String() = %q, want %q", got, hex)
}
if got := i.Algorithm().Size(); got != algo.Size() {
t.Fatalf("Size() = %d, want %d", got, algo.Size())
}
raw := i.Bytes()
if len(raw) != algo.Size() {
t.Fatalf("Bytes len = %d, want %d", len(raw), algo.Size())
}
id2, err := id.FromBytes(algo, raw)
if err != nil {
t.Fatalf("FromBytes failed: %v", err)
}
if id2.String() != hex {
t.Fatalf("FromBytes roundtrip = %q, want %q", id2.String(), hex)
}
})
}
}
|
