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|
package uuid
import (
"crypto/rand"
"io"
"reflect"
"regexp"
"testing"
)
func TestGenerateUUID(t *testing.T) {
prev, err := GenerateUUID()
if err != nil {
t.Fatal(err)
}
for i := 0; i < 100; i++ {
id, err := GenerateUUID()
if err != nil {
t.Fatal(err)
}
if prev == id {
t.Fatalf("Should get a new ID!")
}
matched, err := regexp.MatchString(
"[\\da-f]{8}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{12}", id)
if !matched || err != nil {
t.Fatalf("expected match %s %v %s", id, matched, err)
}
}
}
func TestGenerateUUIDWithReader(t *testing.T) {
var nilReader io.Reader
str, err := GenerateUUIDWithReader(nilReader)
if err == nil {
t.Fatalf("should get an error with a nilReader")
}
if str != "" {
t.Fatalf("should get an empty string")
}
prev, err := GenerateUUIDWithReader(rand.Reader)
if err != nil {
t.Fatal(err)
}
id, err := GenerateUUIDWithReader(rand.Reader)
if err != nil {
t.Fatal(err)
}
if prev == id {
t.Fatalf("Should get a new ID!")
}
matched, err := regexp.MatchString(
"[\\da-f]{8}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{12}", id)
if !matched || err != nil {
t.Fatalf("expected match %s %v %s", id, matched, err)
}
}
func TestParseUUID(t *testing.T) {
buf := make([]byte, 16)
if _, err := rand.Read(buf); err != nil {
t.Fatalf("failed to read random bytes: %v", err)
}
uuidStr, err := FormatUUID(buf)
if err != nil {
t.Fatal(err)
}
parsedStr, err := ParseUUID(uuidStr)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(parsedStr, buf) {
t.Fatalf("mismatched buffers")
}
}
func BenchmarkGenerateUUID(b *testing.B) {
for n := 0; n < b.N; n++ {
_, _ = GenerateUUID()
}
}
func BenchmarkGenerateUUIDWithReader(b *testing.B) {
for n := 0; n < b.N; n++ {
_, _ = GenerateUUIDWithReader(rand.Reader)
}
}
|
