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|
package objectid_test
import (
"bytes"
"strings"
"testing"
objectid "codeberg.org/lindenii/furgit/object/id"
)
func TestParseAlgorithm(t *testing.T) {
t.Parallel()
algo, ok := objectid.ParseAlgorithm("sha1")
if !ok || algo != objectid.AlgorithmSHA1 {
t.Fatalf("ParseAlgorithm(sha1) = (%v,%v)", algo, ok)
}
algo, ok = objectid.ParseAlgorithm("sha256")
if !ok || algo != objectid.AlgorithmSHA256 {
t.Fatalf("ParseAlgorithm(sha256) = (%v,%v)", algo, ok)
}
if _, ok := objectid.ParseAlgorithm("md5"); ok {
t.Fatalf("ParseAlgorithm(md5) should fail")
}
}
func TestParseHexRoundtrip(t *testing.T) {
t.Parallel()
for _, algo := range objectid.SupportedAlgorithms() {
t.Run(algo.String(), func(t *testing.T) {
t.Parallel()
hex := strings.Repeat("01", algo.Size())
id, err := objectid.ParseHex(algo, hex)
if err != nil {
t.Fatalf("ParseHex failed: %v", err)
}
if got := id.String(); got != hex {
t.Fatalf("String() = %q, want %q", got, hex)
}
if got := id.Algorithm().Size(); got != algo.Size() {
t.Fatalf("Size() = %d, want %d", got, algo.Size())
}
raw := id.Bytes()
if len(raw) != algo.Size() {
t.Fatalf("Bytes len = %d, want %d", len(raw), algo.Size())
}
id2, err := objectid.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)
}
})
}
}
func TestParseHexErrors(t *testing.T) {
t.Parallel()
t.Run("unknown algo", func(t *testing.T) {
t.Parallel()
_, err := objectid.ParseHex(objectid.AlgorithmUnknown, "00")
if err == nil {
t.Fatalf("expected ParseHex error")
}
})
for _, algo := range objectid.SupportedAlgorithms() {
t.Run(algo.String(), func(t *testing.T) {
t.Parallel()
_, err := objectid.ParseHex(algo, strings.Repeat("0", algo.HexLen()-1))
if err == nil {
t.Fatalf("expected ParseHex odd-len error")
}
_, err = objectid.ParseHex(algo, strings.Repeat("0", algo.HexLen()-2))
if err == nil {
t.Fatalf("expected ParseHex wrong-len error")
}
_, err = objectid.ParseHex(algo, "z"+strings.Repeat("0", algo.HexLen()-1))
if err == nil {
t.Fatalf("expected ParseHex invalid-hex error")
}
})
}
}
func TestFromBytesErrors(t *testing.T) {
t.Parallel()
_, err := objectid.FromBytes(objectid.AlgorithmUnknown, []byte{1, 2})
if err == nil {
t.Fatalf("expected FromBytes unknown algo error")
}
for _, algo := range objectid.SupportedAlgorithms() {
_, err = objectid.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 objectid.SupportedAlgorithms() {
id, err := objectid.ParseHex(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 TestRawBytesAliasesStorage(t *testing.T) {
t.Parallel()
for _, algo := range objectid.SupportedAlgorithms() {
id, err := objectid.ParseHex(algo, strings.Repeat("01", algo.Size()))
if err != nil {
t.Fatalf("ParseHex failed: %v", err)
}
b := id.RawBytes()
if len(b) != id.Algorithm().Size() {
t.Fatalf("RawBytes len = %d, want %d", len(b), id.Algorithm().Size())
}
if cap(b) != len(b) {
t.Fatalf("RawBytes cap = %d, want %d", cap(b), len(b))
}
orig := id.String()
b[0] ^= 0xff
if id.String() == orig {
t.Fatalf("RawBytes should alias object ID storage")
}
}
}
func TestAlgorithmSum(t *testing.T) {
t.Parallel()
id1 := objectid.AlgorithmSHA1.Sum([]byte("hello"))
if id1.Algorithm() != objectid.AlgorithmSHA1 || id1.Algorithm().Size() != objectid.AlgorithmSHA1.Size() {
t.Fatalf("sha1 sum produced invalid object id")
}
id2 := objectid.AlgorithmSHA256.Sum([]byte("hello"))
if id2.Algorithm() != objectid.AlgorithmSHA256 || id2.Algorithm().Size() != objectid.AlgorithmSHA256.Size() {
t.Fatalf("sha256 sum produced invalid object id")
}
if id1.String() == id2.String() {
t.Fatalf("sha1 and sha256 should differ")
}
}
func TestAlgorithmEmptyTree(t *testing.T) {
t.Parallel()
tests := []struct {
name string
algo objectid.Algorithm
want string
}{
{
name: "sha1",
algo: objectid.AlgorithmSHA1,
want: "4b825dc642cb6eb9a060e54bf8d69288fbee4904",
},
{
name: "sha256",
algo: objectid.AlgorithmSHA256,
want: "6ef19b41225c5369f1c104d45d8d85efa9b057b53b14b4b9b939dd74decc5321",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
got := tt.algo.EmptyTree()
if got.Algorithm() != tt.algo {
t.Fatalf("EmptyTree() algorithm = %v, want %v", got.Algorithm(), tt.algo)
}
if got.String() != tt.want {
t.Fatalf("EmptyTree() = %q, want %q", got.String(), tt.want)
}
})
}
}
func TestUnknownAlgorithmEmptyTree(t *testing.T) {
t.Parallel()
got := objectid.AlgorithmUnknown.EmptyTree()
if got != (objectid.ObjectID{}) {
t.Fatalf("EmptyTree() for unknown algorithm = %#v, want zero value", got)
}
}
|
