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package goutils
import (
"regexp"
"strconv"
"testing"
"unicode/utf8"
)
func TestCryptoRandomNonAlphaNumeric(t *testing.T) {
// If asked for a string 0 characters long, CryptoRandomNonAlphaNumeric should provide an empty string.
if x, _ := CryptoRandomNonAlphaNumeric(0); utf8.RuneCountInString(x) != 0 {
t.Errorf("String should be 0 characters; string was %v characters", utf8.RuneCountInString(x))
}
// Test CryptoRandomNonAlphaNumeric's ability to generate strings 1 through 100 characters in length.
for i := 1; i < 101; i++ {
if x, _ := CryptoRandomNonAlphaNumeric(i); utf8.RuneCountInString(x) != i {
t.Errorf("String should be %v characters; string was %v characters", i, utf8.RuneCountInString(x))
}
}
}
func TestCryptoRandomAscii(t *testing.T) {
// If asked for a string 0 characters long, CryptoRandomAscii should provide an empty string.
if x, _ := CryptoRandomAscii(0); len(x) != 0 {
t.Errorf("String should be 0 characters; string was %v characters", len(x))
}
// Test CryptoRandomAscii's ability to generate strings 1 through 100 characters in length.
for i := 1; i < 101; i++ {
if x, _ := CryptoRandomAscii(i); len(x) != i {
t.Errorf("String should be %v characters; string was %v characters", i, len(x))
}
}
}
func TestCryptoRandomNumeric(t *testing.T) {
// If asked for a string 0 characters long, CryptoRandomNumeric should provide an empty string.
if x, _ := CryptoRandomNumeric(0); len(x) != 0 {
t.Errorf("String should be 0 characters; string was %v characters", len(x))
}
// Test CryptoRandomNumeric's ability to generate strings 1 through 100 characters in length.
for i := 1; i < 101; i++ {
if x, _ := CryptoRandomNumeric(i); len(x) != i {
t.Errorf("String should be %v characters; string was %v characters", i, len(x))
}
}
}
func TestCryptoRandomAlphabetic(t *testing.T) {
// If asked for a string 0 characters long, CryptoRandomAlphabetic should provide an empty string.
if x, _ := CryptoRandomAlphabetic(0); len(x) != 0 {
t.Errorf("String should be 0 characters; string was %v characters", len(x))
}
// Test CryptoRandomAlphabetic's ability to generate strings 1 through 100 characters in length.
for i := 1; i < 101; i++ {
if x, _ := CryptoRandomAlphabetic(i); len(x) != i {
t.Errorf("String should be %v characters; string was %v characters", i, len(x))
}
}
}
func TestCryptoRandomAlphaNumeric(t *testing.T) {
// If asked for a string 0 characters long, CryptoRandomAlphaNumeric should provide an empty string.
if x, _ := CryptoRandomAlphaNumeric(0); len(x) != 0 {
t.Errorf("String should be 0 characters; string was %v characters", len(x))
}
// Test CryptoRandomAlphaNumeric's ability to generate strings 1 through 100 characters in length.
for i := 1; i < 101; i++ {
if x, _ := CryptoRandomAlphaNumeric(i); len(x) != i {
t.Errorf("String should be %v characters; string was %v characters", i, len(x))
}
}
}
func TestCryptoRandAlphaNumeric_FuzzOnlyNumeric(t *testing.T) {
// Testing for a reported regression in which some versions produced
// a predictably small set of chars.
iters := 1000
charlen := 0
for i := 0; i < 16; i++ {
numOnly := 0
charlen++
for i := 0; i < iters; i++ {
out, err := CryptoRandomAlphaNumeric(charlen)
if err != nil {
t.Fatal("func failed to produce a random thinger")
}
if _, err := strconv.Atoi(out); err == nil {
numOnly++
}
m, err := regexp.MatchString("^[0-9a-zA-Z]+$", out)
if err != nil {
t.Fatal(err)
}
if !m {
t.Fatal("Character is not alphanum")
}
}
if numOnly == iters {
t.Fatalf("Got %d numeric-only random sequences", numOnly)
}
}
}
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