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|
package snowflake
import (
"encoding/json"
"testing"
)
func TestNew(t *testing.T) {
s := New()
if s.IsZero() {
t.Error("New() returned zero Snowflake")
}
}
func TestNewUnique(t *testing.T) {
seen := make(map[string]bool, 1000)
for i := 0; i < 1000; i++ {
s := New()
str := s.String()
if seen[str] {
t.Fatalf("duplicate ID generated: %s", str)
}
seen[str] = true
}
}
func TestIsZero(t *testing.T) {
zero := Zero()
if !zero.IsZero() {
t.Error("Zero Snowflake should be zero")
}
nonZero := New()
if nonZero.IsZero() {
t.Error("New Snowflake should not be zero")
}
}
func TestStringRoundTrip(t *testing.T) {
original := New()
str := original.String()
parsed, err := FromString(str)
if err != nil {
t.Fatalf("FromString failed: %v", err)
}
if parsed != original {
t.Errorf("round-trip mismatch: original=%+v, parsed=%+v", original, parsed)
}
}
func TestStringRoundTripMany(t *testing.T) {
for i := 0; i < 100; i++ {
original := New()
str := original.String()
parsed, err := FromString(str)
if err != nil {
t.Fatalf("iteration %d: FromString failed: %v", i, err)
}
if parsed != original {
t.Fatalf("iteration %d: round-trip mismatch", i)
}
}
}
func TestFromStringInvalidChars(t *testing.T) {
_, err := FromString("!!invalid!!")
if err != ErrInvalidEncoding {
t.Errorf("expected ErrInvalidEncoding, got: %v", err)
}
}
func TestFromStringEmpty(t *testing.T) {
s, err := FromString("")
if err != nil {
t.Errorf("unexpected error for empty string: %v", err)
}
if !s.IsZero() {
t.Error("empty string should produce zero Snowflake")
}
}
func TestFromStringTooLong(t *testing.T) {
_, err := FromString("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789")
if err != ErrInvalidEncoding {
t.Errorf("expected ErrInvalidEncoding for overflow, got: %v", err)
}
}
func TestHexString(t *testing.T) {
s := New()
hex := s.Hex()
if len(hex) != IDByteSize*2 {
t.Errorf("expected hex length %d, got %d", IDByteSize*2, len(hex))
}
for _, c := range hex {
if !((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f')) {
t.Errorf("invalid hex character: %c", c)
}
}
}
func TestZeroString(t *testing.T) {
zero := Zero()
str := zero.String()
if str != "0" {
t.Errorf("Zero Snowflake should stringify to %q, got: %q", "0", str)
}
parsed, err := FromString(str)
if err != nil {
t.Fatalf("FromString(%q) failed: %v", str, err)
}
if !parsed.IsZero() {
t.Error("FromString(Zero().String()) should round-trip to zero")
}
}
func TestHexRoundTrip(t *testing.T) {
original := New()
hex := original.Hex()
parsed, err := FromHex(hex)
if err != nil {
t.Fatalf("FromHex failed: %v", err)
}
if parsed != original {
t.Error("hex round-trip mismatch")
}
}
func TestFromHexInvalid(t *testing.T) {
_, err := FromHex("xyz")
if err == nil {
t.Error("expected error for invalid hex")
}
}
func TestFromHexWrongLength(t *testing.T) {
_, err := FromHex("01")
if err != ErrInvalidIDLength {
t.Errorf("expected ErrInvalidIDLength, got: %v", err)
}
}
func TestMarshalText(t *testing.T) {
s := New()
text, err := s.MarshalText()
if err != nil {
t.Fatalf("MarshalText failed: %v", err)
}
var decoded Snowflake
err = decoded.UnmarshalText(text)
if err != nil {
t.Fatalf("UnmarshalText failed: %v", err)
}
if decoded != s {
t.Error("text marshal/unmarshal mismatch")
}
}
func TestUnmarshalTextInvalid(t *testing.T) {
var s Snowflake
err := s.UnmarshalText([]byte("!!!"))
if err == nil {
t.Error("expected error for invalid text")
}
}
func TestMarshalJSON(t *testing.T) {
s := New()
data, err := s.MarshalJSON()
if err != nil {
t.Fatalf("MarshalJSON failed: %v", err)
}
var decoded Snowflake
err = json.Unmarshal(data, &decoded)
if err != nil {
t.Fatalf("json.Unmarshal failed: %v", err)
}
if decoded != s {
t.Error("JSON marshal/unmarshal mismatch")
}
}
func TestUnmarshalJSONMissingQuotes(t *testing.T) {
var s Snowflake
err := s.UnmarshalJSON([]byte(`invalid`))
if err != ErrInvalidEncoding {
t.Errorf("expected ErrInvalidEncoding, got: %v", err)
}
}
func TestUnmarshalJSONEmpty(t *testing.T) {
var s Snowflake
err := s.UnmarshalJSON([]byte(`""`))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if !s.IsZero() {
t.Error("empty JSON string should produce zero Snowflake")
}
}
func TestUnmarshalJSONInvalidInner(t *testing.T) {
var s Snowflake
err := s.UnmarshalJSON([]byte(`"!!!"`))
if err != ErrInvalidEncoding {
t.Errorf("expected ErrInvalidEncoding for invalid inner content, got: %v", err)
}
}
func TestDriverValue(t *testing.T) {
s := New()
val, err := s.Value()
if err != nil {
t.Fatalf("Value failed: %v", err)
}
bytes, ok := val.([]byte)
if !ok {
t.Fatal("Value should return []byte")
}
if len(bytes) != IDByteSize {
t.Errorf("expected byte length %d, got %d", IDByteSize, len(bytes))
}
}
func TestDriverScan(t *testing.T) {
original := New()
bytes := make([]byte, IDByteSize)
copy(bytes, original.bytes[:])
var s Snowflake
if err := s.Scan(bytes); err != nil {
t.Fatalf("Scan failed: %v", err)
}
if s != original {
t.Error("Scan produced mismatched value")
}
}
func TestDriverScanString(t *testing.T) {
original := New()
bytes := make([]byte, IDByteSize)
copy(bytes, original.bytes[:])
var s Snowflake
if err := s.Scan(string(bytes)); err != nil {
t.Fatalf("Scan(string) failed: %v", err)
}
if s != original {
t.Error("Scan(string) produced mismatched value")
}
}
func TestDriverScanNil(t *testing.T) {
var s Snowflake
err := s.Scan(nil)
if err != nil {
t.Fatalf("Scan(nil) failed: %v", err)
}
if !s.IsZero() {
t.Error("Scan(nil) should produce zero Snowflake")
}
}
func TestDriverScanWrongLength(t *testing.T) {
var s Snowflake
err := s.Scan([]byte{1, 2, 3})
if err != ErrInvalidIDLength {
t.Errorf("expected ErrInvalidIDLength, got: %v", err)
}
}
func TestDriverScanZeroBytes(t *testing.T) {
var s Snowflake
zeroBytes := make([]byte, IDByteSize)
err := s.Scan(zeroBytes)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if !s.IsZero() {
t.Error("Scan with all-zero bytes should produce zero Snowflake")
}
}
func TestDriverScanUnsupportedType(t *testing.T) {
var s Snowflake
err := s.Scan(42)
if err == nil {
t.Error("expected error for unsupported type")
}
}
func TestJSONEmbedding(t *testing.T) {
type Wrapper struct {
Name string `json:"name"`
ID Snowflake `json:"id"`
Ref *Snowflake `json:"ref,omitempty"`
}
s := New()
w := Wrapper{
Name: "test",
ID: s,
Ref: &s,
}
data, err := json.Marshal(&w)
if err != nil {
t.Fatalf("marshal failed: %v", err)
}
var decoded Wrapper
err = json.Unmarshal(data, &decoded)
if err != nil {
t.Fatalf("unmarshal failed: %v", err)
}
if decoded.ID != s {
t.Error("embedded ID mismatch")
}
if decoded.Ref == nil || *decoded.Ref != s {
t.Error("embedded ref mismatch")
}
}
|