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/*
* Human-friendly token generator
* Copyright (c) 2017, Christian Muehlhaeuser <muesli@gmail.com>
*
* For license see LICENSE
*/
package toktok
import (
"strings"
"testing"
)
func TestTokenGen(t *testing.T) {
length := uint(8)
bucket, err := NewBucket(length)
if err != nil {
t.Error("Error creating new token bucket:", err)
}
tok, err := bucket.NewToken(4)
if err != nil {
t.Errorf("Unexpected error %v", err)
}
if len(tok) != int(length) {
t.Errorf("Wrong token length, expected %d, got %d", length, len(tok))
}
}
func TestTokenCount(t *testing.T) {
bucket, _ := NewBucket(8)
bucket.NewToken(1)
if bucket.Count() != 1 {
t.Errorf("Expected Count() to return 1, got %d", bucket.Count())
}
}
func TestTokenLoad(t *testing.T) {
code1, code2 := "ABCDEFGH", "IJKLMNOP"
tokens := []string{code1, code2}
bucket, _ := NewBucket(8)
bucket.LoadTokens(tokens)
if bucket.Count() != 2 {
t.Errorf("Expected Count() to return 2, got %d", bucket.Count())
}
tok, _ := bucket.Resolve(code1)
if tok != code1 {
t.Errorf("Expected Token '%s', got '%s'", code1, tok)
}
}
func TestTokenEstimations(t *testing.T) {
bucket, _ := NewBucket(7)
if bucket.EstimatedFillPercentage() != 0 {
t.Errorf("Expected zero fill-rate estimate, got %f", bucket.EstimatedFillPercentage())
}
for i := 0; i < 5001; i++ {
bucket.NewToken(4)
}
if bucket.EstimatedFillPercentage() <= 0 {
t.Errorf("Expected positive fill-rate estimate, got %f", bucket.EstimatedFillPercentage())
}
if bucket.EstimatedTokenSpace() <= 0 {
t.Errorf("Expected positive token space estimate, got %d", bucket.EstimatedTokenSpace())
}
}
func TestTokenError(t *testing.T) {
_, err := NewBucket(1)
if err != ErrTokenLengthTooSmall {
t.Errorf("Expected error %v, got %v", ErrTokenLengthTooSmall, err)
}
_, err = NewBucketWithRunes(8, "ABC")
if err != ErrTooFewRunes {
t.Errorf("Expected error %v, got %v", ErrTooFewRunes, err)
}
_, err = NewBucketWithRunes(8, "ABCDabcd")
if err != ErrDupeRunes {
t.Errorf("Expected error %v, got %v", ErrDupeRunes, err)
}
bucket, _ := NewBucket(4)
_, err = bucket.NewToken(0)
if err != ErrDistanceTooSmall {
t.Errorf("Expected error %v, got %v", ErrDistanceTooSmall, err)
}
for i := 0; i < 256; i++ {
_, err = bucket.NewToken(4)
if err != nil {
break
}
}
if err != ErrTokenSpaceExhausted {
t.Errorf("Expected error %v, got %v", ErrTokenSpaceExhausted, err)
}
}
func TestTokenResolve(t *testing.T) {
bucket, _ := NewBucket(8)
var tok string
for i := 0; i < 32; i++ {
gtok, err := bucket.NewToken(4)
if err != nil {
t.Errorf("Unexpected error %v", err)
}
if i == 0 {
tok = gtok
}
}
ntok, dist := bucket.Resolve(tok)
if ntok != tok {
t.Errorf("Token mismatch, expected %v, got %v", tok, ntok)
}
if dist != 0 {
t.Errorf("Wrong distance returned, expected 0, got %d", dist)
}
ntok, dist = bucket.Resolve(strings.ToLower(tok))
if ntok != tok {
t.Errorf("Lowercase token mismatch, expected %v, got %v", tok, ntok)
}
if dist != 0 {
t.Errorf("Wrong distance returned, expected 0, got %d", dist)
}
}
func TestTokenFaultyResolve(t *testing.T) {
bucket, _ := NewBucket(8)
var tok, ttok string
for i := 0; i < 32; i++ {
gtok, err := bucket.NewToken(4)
if err != nil {
t.Errorf("Unexpected error %v", err)
}
if i == 0 {
tok = gtok
ttok = tok
}
}
// replace char in token
ttok = " " + ttok[1:]
ntok, dist := bucket.Resolve(ttok)
if ntok != tok {
t.Errorf("Token mismatch, expected %v, got %v", tok, ntok)
}
if dist != 2 {
t.Errorf("Wrong distance returned, expected 2, got %d", dist)
}
// insert char in token
ttok = tok + " "
ntok, dist = bucket.Resolve(ttok)
if ntok != tok {
t.Errorf("Token mismatch, expected %v, got %v", tok, ntok)
}
if dist != 1 {
t.Errorf("Wrong distance returned, expected 1, got %d", dist)
}
// remove char in token
ttok = tok[1:]
ntok, dist = bucket.Resolve(ttok)
if ntok != tok {
t.Errorf("Token mismatch, expected %v, got %v", tok, ntok)
}
if dist != 1 {
t.Errorf("Wrong distance returned, expected 1, got %d", dist)
}
}
func BenchmarkCodeGen(b *testing.B) {
bucket, _ := NewBucket(8)
for i := 0; i < b.N; i++ {
bucket.NewToken(4)
}
}
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