// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"bytes"
"errors"
"fmt"
"os"
"runtime"
"strings"
"testing"
"time"
"unsafe"
)
type test struct {
in string
version Version
variant Variant
isuuid bool
}
var tests = []test{
{"f47ac10b-58cc-0372-8567-0e02b2c3d479", 0, RFC4122, true},
{"f47ac10b-58cc-1372-8567-0e02b2c3d479", 1, RFC4122, true},
{"f47ac10b-58cc-2372-8567-0e02b2c3d479", 2, RFC4122, true},
{"f47ac10b-58cc-3372-8567-0e02b2c3d479", 3, RFC4122, true},
{"f47ac10b-58cc-4372-8567-0e02b2c3d479", 4, RFC4122, true},
{"f47ac10b-58cc-5372-8567-0e02b2c3d479", 5, RFC4122, true},
{"f47ac10b-58cc-6372-8567-0e02b2c3d479", 6, RFC4122, true},
{"f47ac10b-58cc-7372-8567-0e02b2c3d479", 7, RFC4122, true},
{"f47ac10b-58cc-8372-8567-0e02b2c3d479", 8, RFC4122, true},
{"f47ac10b-58cc-9372-8567-0e02b2c3d479", 9, RFC4122, true},
{"f47ac10b-58cc-a372-8567-0e02b2c3d479", 10, RFC4122, true},
{"f47ac10b-58cc-b372-8567-0e02b2c3d479", 11, RFC4122, true},
{"f47ac10b-58cc-c372-8567-0e02b2c3d479", 12, RFC4122, true},
{"f47ac10b-58cc-d372-8567-0e02b2c3d479", 13, RFC4122, true},
{"f47ac10b-58cc-e372-8567-0e02b2c3d479", 14, RFC4122, true},
{"f47ac10b-58cc-f372-8567-0e02b2c3d479", 15, RFC4122, true},
{"urn:uuid:f47ac10b-58cc-4372-0567-0e02b2c3d479", 4, Reserved, true},
{"URN:UUID:f47ac10b-58cc-4372-0567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-0567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-1567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-2567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-3567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-4567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-5567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-6567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-7567-0e02b2c3d479", 4, Reserved, true},
{"f47ac10b-58cc-4372-8567-0e02b2c3d479", 4, RFC4122, true},
{"f47ac10b-58cc-4372-9567-0e02b2c3d479", 4, RFC4122, true},
{"f47ac10b-58cc-4372-a567-0e02b2c3d479", 4, RFC4122, true},
{"f47ac10b-58cc-4372-b567-0e02b2c3d479", 4, RFC4122, true},
{"f47ac10b-58cc-4372-c567-0e02b2c3d479", 4, Microsoft, true},
{"f47ac10b-58cc-4372-d567-0e02b2c3d479", 4, Microsoft, true},
{"f47ac10b-58cc-4372-e567-0e02b2c3d479", 4, Future, true},
{"f47ac10b-58cc-4372-f567-0e02b2c3d479", 4, Future, true},
{"f47ac10b158cc-5372-a567-0e02b2c3d479", 0, Invalid, false},
{"f47ac10b-58cc25372-a567-0e02b2c3d479", 0, Invalid, false},
{"f47ac10b-58cc-53723a567-0e02b2c3d479", 0, Invalid, false},
{"f47ac10b-58cc-5372-a56740e02b2c3d479", 0, Invalid, false},
{"f47ac10b-58cc-5372-a567-0e02-2c3d479", 0, Invalid, false},
{"g47ac10b-58cc-4372-a567-0e02b2c3d479", 0, Invalid, false},
{"{f47ac10b-58cc-0372-8567-0e02b2c3d479}", 0, RFC4122, true},
{"{f47ac10b-58cc-0372-8567-0e02b2c3d479", 0, Invalid, false},
{"f47ac10b-58cc-0372-8567-0e02b2c3d479}", 0, Invalid, false},
{"f47ac10b58cc037285670e02b2c3d479", 0, RFC4122, true},
{"f47ac10b58cc037285670e02b2c3d4790", 0, Invalid, false},
{"f47ac10b58cc037285670e02b2c3d47", 0, Invalid, false},
{"01ee836c-e7c9-619d-929a-525400475911", 6, RFC4122, true},
{"018bd12c-58b0-7683-8a5b-8752d0e86651", 7, RFC4122, true},
}
var constants = []struct {
c interface{}
name string
}{
{Person, "Person"},
{Group, "Group"},
{Org, "Org"},
{Invalid, "Invalid"},
{RFC4122, "RFC4122"},
{Reserved, "Reserved"},
{Microsoft, "Microsoft"},
{Future, "Future"},
{Domain(17), "Domain17"},
{Variant(42), "BadVariant42"},
}
func testTest(t *testing.T, in string, tt test) {
uuid, err := Parse(in)
if ok := (err == nil); ok != tt.isuuid {
t.Errorf("Parse(%s) got %v expected %v\b", in, ok, tt.isuuid)
}
if err != nil {
return
}
if v := uuid.Variant(); v != tt.variant {
t.Errorf("Variant(%s) got %d expected %d\b", in, v, tt.variant)
}
if v := uuid.Version(); v != tt.version {
t.Errorf("Version(%s) got %d expected %d\b", in, v, tt.version)
}
}
func testBytes(t *testing.T, in []byte, tt test) {
uuid, err := ParseBytes(in)
if ok := (err == nil); ok != tt.isuuid {
t.Errorf("ParseBytes(%s) got %v expected %v\b", in, ok, tt.isuuid)
}
if err != nil {
return
}
suuid, _ := Parse(string(in))
if uuid != suuid {
t.Errorf("ParseBytes(%s) got %v expected %v\b", in, uuid, suuid)
}
}
func TestUUID(t *testing.T) {
for _, tt := range tests {
testTest(t, tt.in, tt)
testTest(t, strings.ToUpper(tt.in), tt)
testBytes(t, []byte(tt.in), tt)
}
}
func TestFromBytes(t *testing.T) {
b := []byte{
0x7d, 0x44, 0x48, 0x40,
0x9d, 0xc0,
0x11, 0xd1,
0xb2, 0x45,
0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2,
}
uuid, err := FromBytes(b)
if err != nil {
t.Fatalf("%s", err)
}
for i := 0; i < len(uuid); i++ {
if b[i] != uuid[i] {
t.Fatalf("FromBytes() got %v expected %v\b", uuid[:], b)
}
}
}
func TestConstants(t *testing.T) {
for x, tt := range constants {
v, ok := tt.c.(fmt.Stringer)
if !ok {
t.Errorf("%x: %v: not a stringer", x, v)
} else if s := v.String(); s != tt.name {
v, _ := tt.c.(int)
t.Errorf("%x: Constant %T:%d gives %q, expected %q", x, tt.c, v, s, tt.name)
}
}
}
func TestRandomUUID(t *testing.T) {
m := make(map[string]bool)
for x := 1; x < 32; x++ {
uuid := New()
s := uuid.String()
if m[s] {
t.Errorf("NewRandom returned duplicated UUID %s", s)
}
m[s] = true
if v := uuid.Version(); v != 4 {
t.Errorf("Random UUID of version %s", v)
}
if uuid.Variant() != RFC4122 {
t.Errorf("Random UUID is variant %d", uuid.Variant())
}
}
}
func TestRandomUUID_Pooled(t *testing.T) {
defer DisableRandPool()
EnableRandPool()
m := make(map[string]bool)
for x := 1; x < 128; x++ {
uuid := New()
s := uuid.String()
if m[s] {
t.Errorf("NewRandom returned duplicated UUID %s", s)
}
m[s] = true
if v := uuid.Version(); v != 4 {
t.Errorf("Random UUID of version %s", v)
}
if uuid.Variant() != RFC4122 {
t.Errorf("Random UUID is variant %d", uuid.Variant())
}
}
}
func TestNew(t *testing.T) {
m := make(map[UUID]bool)
for x := 1; x < 32; x++ {
s := New()
if m[s] {
t.Errorf("New returned duplicated UUID %s", s)
}
m[s] = true
uuid, err := Parse(s.String())
if err != nil {
t.Errorf("New.String() returned %q which does not decode", s)
continue
}
if v := uuid.Version(); v != 4 {
t.Errorf("Random UUID of version %s", v)
}
if uuid.Variant() != RFC4122 {
t.Errorf("Random UUID is variant %d", uuid.Variant())
}
}
}
func TestClockSeq(t *testing.T) {
// Fake time.Now for this test to return a monotonically advancing time; restore it at end.
defer func(orig func() time.Time) { timeNow = orig }(timeNow)
monTime := time.Now()
timeNow = func() time.Time {
monTime = monTime.Add(1 * time.Second)
return monTime
}
SetClockSequence(-1)
uuid1, err := NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
uuid2, err := NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
if s1, s2 := uuid1.ClockSequence(), uuid2.ClockSequence(); s1 != s2 {
t.Errorf("clock sequence %d != %d", s1, s2)
}
SetClockSequence(-1)
uuid2, err = NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
// Just on the very off chance we generated the same sequence
// two times we try again.
if uuid1.ClockSequence() == uuid2.ClockSequence() {
SetClockSequence(-1)
uuid2, err = NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
}
if s1, s2 := uuid1.ClockSequence(), uuid2.ClockSequence(); s1 == s2 {
t.Errorf("Duplicate clock sequence %d", s1)
}
SetClockSequence(0x1234)
uuid1, err = NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
if seq := uuid1.ClockSequence(); seq != 0x1234 {
t.Errorf("%s: expected seq 0x1234 got 0x%04x", uuid1, seq)
}
}
func TestCoding(t *testing.T) {
text := "7d444840-9dc0-11d1-b245-5ffdce74fad2"
urn := "urn:uuid:7d444840-9dc0-11d1-b245-5ffdce74fad2"
data := UUID{
0x7d, 0x44, 0x48, 0x40,
0x9d, 0xc0,
0x11, 0xd1,
0xb2, 0x45,
0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2,
}
if v := data.String(); v != text {
t.Errorf("%x: encoded to %s, expected %s", data, v, text)
}
if v := data.URN(); v != urn {
t.Errorf("%x: urn is %s, expected %s", data, v, urn)
}
uuid, err := Parse(text)
if err != nil {
t.Errorf("Parse returned unexpected error %v", err)
}
if data != uuid {
t.Errorf("%s: decoded to %s, expected %s", text, uuid, data)
}
}
func TestVersion1(t *testing.T) {
uuid1, err := NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
uuid2, err := NewUUID()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
if uuid1 == uuid2 {
t.Errorf("%s:duplicate uuid", uuid1)
}
if v := uuid1.Version(); v != 1 {
t.Errorf("%s: version %s expected 1", uuid1, v)
}
if v := uuid2.Version(); v != 1 {
t.Errorf("%s: version %s expected 1", uuid2, v)
}
n1 := uuid1.NodeID()
n2 := uuid2.NodeID()
if !bytes.Equal(n1, n2) {
t.Errorf("Different nodes %x != %x", n1, n2)
}
t1 := uuid1.Time()
t2 := uuid2.Time()
q1 := uuid1.ClockSequence()
q2 := uuid2.ClockSequence()
switch {
case t1 == t2 && q1 == q2:
t.Error("time stopped")
case t1 > t2 && q1 == q2:
t.Error("time reversed")
case t1 < t2 && q1 != q2:
t.Error("clock sequence changed unexpectedly")
}
}
func TestNode(t *testing.T) {
// This test is mostly to make sure we don't leave nodeMu locked.
ifname = ""
if ni := NodeInterface(); ni != "" {
t.Errorf("NodeInterface got %q, want %q", ni, "")
}
if SetNodeInterface("xyzzy") {
t.Error("SetNodeInterface succeeded on a bad interface name")
}
if !SetNodeInterface("") {
t.Error("SetNodeInterface failed")
}
if runtime.GOARCH != "js" {
if ni := NodeInterface(); ni == "" {
t.Error("NodeInterface returned an empty string")
}
}
ni := NodeID()
if len(ni) != 6 {
t.Errorf("ni got %d bytes, want 6", len(ni))
}
hasData := false
for _, b := range ni {
if b != 0 {
hasData = true
}
}
if !hasData {
t.Error("nodeid is all zeros")
}
id := []byte{1, 2, 3, 4, 5, 6, 7, 8}
SetNodeID(id)
ni = NodeID()
if !bytes.Equal(ni, id[:6]) {
t.Errorf("got nodeid %v, want %v", ni, id[:6])
}
if ni := NodeInterface(); ni != "user" {
t.Errorf("got interface %q, want %q", ni, "user")
}
}
func TestNodeAndTime(t *testing.T) {
// Time is February 5, 1998 12:30:23.136364800 AM GMT
uuid, err := Parse("7d444840-9dc0-11d1-b245-5ffdce74fad2")
if err != nil {
t.Fatalf("Parser returned unexpected error %v", err)
}
node := []byte{0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2}
ts := uuid.Time()
c := time.Unix(ts.UnixTime())
want := time.Date(1998, 2, 5, 0, 30, 23, 136364800, time.UTC)
if !c.Equal(want) {
t.Errorf("Got time %v, want %v", c, want)
}
if !bytes.Equal(node, uuid.NodeID()) {
t.Errorf("Expected node %v got %v", node, uuid.NodeID())
}
}
func TestMD5(t *testing.T) {
uuid := NewMD5(NameSpaceDNS, []byte("python.org")).String()
want := "6fa459ea-ee8a-3ca4-894e-db77e160355e"
if uuid != want {
t.Errorf("MD5: got %q expected %q", uuid, want)
}
}
func TestSHA1(t *testing.T) {
uuid := NewSHA1(NameSpaceDNS, []byte("python.org")).String()
want := "886313e1-3b8a-5372-9b90-0c9aee199e5d"
if uuid != want {
t.Errorf("SHA1: got %q expected %q", uuid, want)
}
}
func TestNodeID(t *testing.T) {
nid := []byte{1, 2, 3, 4, 5, 6}
SetNodeInterface("")
s := NodeInterface()
if runtime.GOARCH != "js" {
if s == "" || s == "user" {
t.Errorf("NodeInterface %q after SetInterface", s)
}
}
node1 := NodeID()
if node1 == nil {
t.Error("NodeID nil after SetNodeInterface", s)
}
SetNodeID(nid)
s = NodeInterface()
if s != "user" {
t.Errorf("Expected NodeInterface %q got %q", "user", s)
}
node2 := NodeID()
if node2 == nil {
t.Error("NodeID nil after SetNodeID", s)
}
if bytes.Equal(node1, node2) {
t.Error("NodeID not changed after SetNodeID", s)
} else if !bytes.Equal(nid, node2) {
t.Errorf("NodeID is %x, expected %x", node2, nid)
}
}
func testDCE(t *testing.T, name string, uuid UUID, err error, domain Domain, id uint32) {
if err != nil {
t.Errorf("%s failed: %v", name, err)
return
}
if v := uuid.Version(); v != 2 {
t.Errorf("%s: %s: expected version 2, got %s", name, uuid, v)
return
}
if v := uuid.Domain(); v != domain {
t.Errorf("%s: %s: expected domain %d, got %d", name, uuid, domain, v)
}
if v := uuid.ID(); v != id {
t.Errorf("%s: %s: expected id %d, got %d", name, uuid, id, v)
}
}
func TestDCE(t *testing.T) {
uuid, err := NewDCESecurity(42, 12345678)
testDCE(t, "NewDCESecurity", uuid, err, 42, 12345678)
uuid, err = NewDCEPerson()
testDCE(t, "NewDCEPerson", uuid, err, Person, uint32(os.Getuid()))
uuid, err = NewDCEGroup()
testDCE(t, "NewDCEGroup", uuid, err, Group, uint32(os.Getgid()))
}
type badRand struct{}
func (r badRand) Read(buf []byte) (int, error) {
for i := range buf {
buf[i] = byte(i)
}
return len(buf), nil
}
func TestBadRand(t *testing.T) {
SetRand(badRand{})
uuid1 := New()
uuid2 := New()
if uuid1 != uuid2 {
t.Errorf("expected duplicates, got %q and %q", uuid1, uuid2)
}
SetRand(nil)
uuid1 = New()
uuid2 = New()
if uuid1 == uuid2 {
t.Errorf("unexpected duplicates, got %q", uuid1)
}
}
func TestSetRand(t *testing.T) {
myString := "805-9dd6-1a877cb526c678e71d38-7122-44c0-9b7c-04e7001cc78783ac3e82-47a3-4cc3-9951-13f3339d88088f5d685a-11f7-4078-ada9-de44ad2daeb7"
SetRand(strings.NewReader(myString))
uuid1 := New()
uuid2 := New()
SetRand(strings.NewReader(myString))
uuid3 := New()
uuid4 := New()
if uuid1 != uuid3 {
t.Errorf("expected duplicates, got %q and %q", uuid1, uuid3)
}
if uuid2 != uuid4 {
t.Errorf("expected duplicates, got %q and %q", uuid2, uuid4)
}
}
func TestRandomFromReader(t *testing.T) {
myString := "8059ddhdle77cb52"
r := bytes.NewReader([]byte(myString))
r2 := bytes.NewReader([]byte(myString))
uuid1, err := NewRandomFromReader(r)
if err != nil {
t.Errorf("failed generating UUID from a reader")
}
_, err = NewRandomFromReader(r)
if err == nil {
t.Errorf("expecting an error as reader has no more bytes. Got uuid. NewRandomFromReader may not be using the provided reader")
}
uuid3, err := NewRandomFromReader(r2)
if err != nil {
t.Errorf("failed generating UUID from a reader")
}
if uuid1 != uuid3 {
t.Errorf("expected duplicates, got %q and %q", uuid1, uuid3)
}
}
func TestRandPool(t *testing.T) {
myString := "8059ddhdle77cb52"
EnableRandPool()
SetRand(strings.NewReader(myString))
_, err := NewRandom()
if err == nil {
t.Errorf("expecting an error as reader has no more bytes")
}
DisableRandPool()
SetRand(strings.NewReader(myString))
_, err = NewRandom()
if err != nil {
t.Errorf("failed generating UUID from a reader")
}
}
func TestWrongLength(t *testing.T) {
_, err := Parse("12345")
if err == nil {
t.Errorf("expected ‘12345’ was invalid")
} else if err.Error() != "invalid UUID length: 5" {
t.Errorf("expected a different error message for an invalid length")
}
}
func TestIsWrongLength(t *testing.T) {
_, err := Parse("12345")
if !IsInvalidLengthError(err) {
t.Errorf("expected error type is invalidLengthError")
}
}
func FuzzParse(f *testing.F) {
for _, tt := range tests {
f.Add(tt.in)
f.Add(strings.ToUpper(tt.in))
}
f.Fuzz(func(t *testing.T, in string) {
Parse(in)
})
}
func FuzzParseBytes(f *testing.F) {
for _, tt := range tests {
f.Add([]byte(tt.in))
}
f.Fuzz(func(t *testing.T, in []byte) {
ParseBytes(in)
})
}
func FuzzFromBytes(f *testing.F) {
// Copied from TestFromBytes.
f.Add([]byte{
0x7d, 0x44, 0x48, 0x40,
0x9d, 0xc0,
0x11, 0xd1,
0xb2, 0x45,
0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2,
})
f.Fuzz(func(t *testing.T, in []byte) {
FromBytes(in)
})
}
// TestValidate checks various scenarios for the Validate function
func TestValidate(t *testing.T) {
testCases := []struct {
name string
input string
expect error
}{
{"Valid UUID", "123e4567-e89b-12d3-a456-426655440000", nil},
{"Valid UUID with URN", "urn:uuid:123e4567-e89b-12d3-a456-426655440000", nil},
{"Valid UUID with Braces", "{123e4567-e89b-12d3-a456-426655440000}", nil},
{"Valid UUID No Hyphens", "123e4567e89b12d3a456426655440000", nil},
{"Invalid UUID", "invalid-uuid", errors.New("invalid UUID length: 12")},
{"Invalid Length", "123", fmt.Errorf("invalid UUID length: %d", len("123"))},
{"Invalid URN Prefix", "urn:test:123e4567-e89b-12d3-a456-426655440000", fmt.Errorf("invalid urn prefix: %q", "urn:test:")},
{"Invalid Brackets", "[123e4567-e89b-12d3-a456-426655440000]", fmt.Errorf("invalid bracketed UUID format")},
{"Invalid UUID Format", "12345678gabc1234abcd1234abcd1234", fmt.Errorf("invalid UUID format")},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
err := Validate(tc.input)
if (err != nil) != (tc.expect != nil) || (err != nil && err.Error() != tc.expect.Error()) {
t.Errorf("Validate(%q) = %v, want %v", tc.input, err, tc.expect)
}
})
}
}
var asString = "f47ac10b-58cc-0372-8567-0e02b2c3d479"
var asBytes = []byte(asString)
func BenchmarkParse(b *testing.B) {
for i := 0; i < b.N; i++ {
_, err := Parse(asString)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkParseBytes(b *testing.B) {
for i := 0; i < b.N; i++ {
_, err := ParseBytes(asBytes)
if err != nil {
b.Fatal(err)
}
}
}
// parseBytesUnsafe is to benchmark using unsafe.
func parseBytesUnsafe(b []byte) (UUID, error) {
return Parse(*(*string)(unsafe.Pointer(&b)))
}
func BenchmarkParseBytesUnsafe(b *testing.B) {
for i := 0; i < b.N; i++ {
_, err := parseBytesUnsafe(asBytes)
if err != nil {
b.Fatal(err)
}
}
}
// parseBytesCopy is to benchmark not using unsafe.
func parseBytesCopy(b []byte) (UUID, error) {
return Parse(string(b))
}
func BenchmarkParseBytesCopy(b *testing.B) {
for i := 0; i < b.N; i++ {
_, err := parseBytesCopy(asBytes)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkNew(b *testing.B) {
for i := 0; i < b.N; i++ {
New()
}
}
func BenchmarkUUID_String(b *testing.B) {
uuid, err := Parse("f47ac10b-58cc-0372-8567-0e02b2c3d479")
if err != nil {
b.Fatal(err)
}
for i := 0; i < b.N; i++ {
if uuid.String() == "" {
b.Fatal("invalid uuid")
}
}
}
func BenchmarkUUID_URN(b *testing.B) {
uuid, err := Parse("f47ac10b-58cc-0372-8567-0e02b2c3d479")
if err != nil {
b.Fatal(err)
}
for i := 0; i < b.N; i++ {
if uuid.URN() == "" {
b.Fatal("invalid uuid")
}
}
}
func BenchmarkParseBadLength(b *testing.B) {
short := asString[:10]
for i := 0; i < b.N; i++ {
_, err := Parse(short)
if err == nil {
b.Fatalf("expected ‘%s’ was invalid", short)
}
}
}
func BenchmarkParseLen32Truncated(b *testing.B) {
partial := asString[:len(asString)-4]
for i := 0; i < b.N; i++ {
_, err := Parse(partial)
if err == nil {
b.Fatalf("expected ‘%s’ was invalid", partial)
}
}
}
func BenchmarkParseLen36Corrupted(b *testing.B) {
wrong := asString[:len(asString)-1] + "x"
for i := 0; i < b.N; i++ {
_, err := Parse(wrong)
if err == nil {
b.Fatalf("expected ‘%s’ was invalid", wrong)
}
}
}
func BenchmarkUUID_New(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
_, err := NewRandom()
if err != nil {
b.Fatal(err)
}
}
})
}
func BenchmarkUUID_NewPooled(b *testing.B) {
EnableRandPool()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
_, err := NewRandom()
if err != nil {
b.Fatal(err)
}
}
})
}
func BenchmarkUUIDs_Strings(b *testing.B) {
uuid1, err := Parse("f47ac10b-58cc-0372-8567-0e02b2c3d479")
if err != nil {
b.Fatal(err)
}
uuid2, err := Parse("7d444840-9dc0-11d1-b245-5ffdce74fad2")
if err != nil {
b.Fatal(err)
}
uuids := UUIDs{uuid1, uuid2}
for i := 0; i < b.N; i++ {
uuids.Strings()
}
}
func TestVersion6(t *testing.T) {
uuid1, err := NewV6()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
uuid2, err := NewV6()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
if uuid1 == uuid2 {
t.Errorf("%s:duplicate uuid", uuid1)
}
if v := uuid1.Version(); v != 6 {
t.Errorf("%s: version %s expected 6", uuid1, v)
}
if v := uuid2.Version(); v != 6 {
t.Errorf("%s: version %s expected 6", uuid2, v)
}
n1 := uuid1.NodeID()
n2 := uuid2.NodeID()
if !bytes.Equal(n1, n2) {
t.Errorf("Different nodes %x != %x", n1, n2)
}
t1 := uuid1.Time()
t2 := uuid2.Time()
q1 := uuid1.ClockSequence()
q2 := uuid2.ClockSequence()
switch {
case t1 == t2 && q1 == q2:
t.Error("time stopped")
case t1 > t2 && q1 == q2:
t.Error("time reversed")
case t1 < t2 && q1 != q2:
t.Error("clock sequence changed unexpectedly")
}
}
// uuid v7 time is only unix milliseconds, so
// uuid1.Time() == uuid2.Time() is right, but uuid1 must != uuid2
func TestVersion7(t *testing.T) {
SetRand(nil)
m := make(map[string]bool)
for x := 1; x < 128; x++ {
uuid, err := NewV7()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
s := uuid.String()
if m[s] {
t.Errorf("NewV7 returned duplicated UUID %s", s)
}
m[s] = true
if v := uuid.Version(); v != 7 {
t.Errorf("UUID of version %s", v)
}
if uuid.Variant() != RFC4122 {
t.Errorf("UUID is variant %d", uuid.Variant())
}
}
}
// uuid v7 time is only unix milliseconds, so
// uuid1.Time() == uuid2.Time() is right, but uuid1 must != uuid2
func TestVersion7_pooled(t *testing.T) {
SetRand(nil)
EnableRandPool()
defer DisableRandPool()
m := make(map[string]bool)
for x := 1; x < 128; x++ {
uuid, err := NewV7()
if err != nil {
t.Fatalf("could not create UUID: %v", err)
}
s := uuid.String()
if m[s] {
t.Errorf("NewV7 returned duplicated UUID %s", s)
}
m[s] = true
if v := uuid.Version(); v != 7 {
t.Errorf("UUID of version %s", v)
}
if uuid.Variant() != RFC4122 {
t.Errorf("UUID is variant %d", uuid.Variant())
}
}
}
func TestVersion7FromReader(t *testing.T) {
myString := "8059ddhdle77cb52"
r := bytes.NewReader([]byte(myString))
_, err := NewV7FromReader(r)
if err != nil {
t.Errorf("failed generating UUID from a reader")
}
_, err = NewV7FromReader(r)
if err == nil {
t.Errorf("expecting an error as reader has no more bytes. Got uuid. NewV7FromReader may not be using the provided reader")
}
}
func TestVersion7Monotonicity(t *testing.T) {
length := 10000
u1 := Must(NewV7()).String()
for i := 0; i < length; i++ {
u2 := Must(NewV7()).String()
if u2 <= u1 {
t.Errorf("monotonicity failed at #%d: %s(next) < %s(before)", i, u2, u1)
break
}
u1 = u2
}
}
type fakeRand struct{}
func (g fakeRand) Read(bs []byte) (int, error) {
for i, _ := range bs {
bs[i] = 0x88
}
return len(bs), nil
}
func TestVersion7MonotonicityStrict(t *testing.T) {
timeNow = func() time.Time {
return time.Date(2008, 8, 8, 8, 8, 8, 8, time.UTC)
}
defer func() {
timeNow = time.Now
}()
SetRand(fakeRand{})
defer SetRand(nil)
length := 100000 // > 3906
u1 := Must(NewV7()).String()
for i := 0; i < length; i++ {
u2 := Must(NewV7()).String()
if u2 <= u1 {
t.Errorf("monotonicity failed at #%d: %s(next) < %s(before)", i, u2, u1)
break
}
u1 = u2
}
}