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package randutil
import (
"crypto/rand"
"errors"
"regexp"
"testing"
"github.com/smallstep/assert"
)
func TestErrors(t *testing.T) {
// with errors
df := forceErrorRandReader()
defer df()
sizes := []int{4, 8, 16, 32}
for _, size := range sizes {
b, err := Salt(size)
assert.Error(t, err)
assert.Len(t, 0, b)
str, err := String(size, "0123456789")
assert.Error(t, err)
assert.Len(t, 0, str)
str, err = Hex(size)
assert.Error(t, err)
assert.Len(t, 0, str)
str, err = Alphanumeric(size)
assert.Error(t, err)
assert.Len(t, 0, str)
str, err = ASCII(size)
assert.Error(t, err)
assert.Len(t, 0, str)
}
}
func TestSalt(t *testing.T) {
sizes := []int{4, 8, 16, 32}
for _, size := range sizes {
a, err := Salt(size)
assert.NoError(t, err)
b, err := Salt(size)
assert.NoError(t, err)
// Most of the time
assert.NotEquals(t, a, b)
}
}
func TestString(t *testing.T) {
re := regexp.MustCompilePOSIX(`^[0-9世界ñçàèìòù]+$`)
chars := "0123456789世界ñçàèìòù"
lengths := []int{4, 8, 16, 32}
for _, l := range lengths {
a, err := String(l, chars)
assert.True(t, re.MatchString(a))
assert.NoError(t, err)
b, err := String(l, chars)
assert.True(t, re.MatchString(b))
assert.NoError(t, err)
// Most of the time
assert.NotEquals(t, a, b)
}
}
func TestHex(t *testing.T) {
re := regexp.MustCompilePOSIX(`^[0-9a-f]+$`)
lengths := []int{4, 8, 16, 32}
for _, l := range lengths {
a, err := Hex(l)
assert.True(t, re.MatchString(a))
assert.NoError(t, err)
b, err := Hex(l)
assert.True(t, re.MatchString(b))
assert.NoError(t, err)
// Most of the time
assert.NotEquals(t, a, b)
}
}
func TestAlphanumeric(t *testing.T) {
re := regexp.MustCompilePOSIX(`^[0-9a-zA-Z]+$`)
lengths := []int{4, 8, 16, 32}
for _, l := range lengths {
a, err := Alphanumeric(l)
assert.True(t, re.MatchString(a))
assert.NoError(t, err)
b, err := Alphanumeric(l)
assert.True(t, re.MatchString(b))
assert.NoError(t, err)
// Most of the time
assert.NotEquals(t, a, b)
}
}
func TestASCII(t *testing.T) {
re := regexp.MustCompilePOSIX("^[\x21-\x7E]+$")
lengths := []int{4, 8, 16, 32}
for _, l := range lengths {
a, err := ASCII(l)
assert.True(t, re.MatchString(a))
assert.NoError(t, err)
b, err := ASCII(l)
assert.True(t, re.MatchString(b))
assert.NoError(t, err)
// Most of the time
assert.NotEquals(t, a, b)
}
}
type errorReader struct{}
func (r *errorReader) Read(p []byte) (int, error) {
return 0, errors.New("an error")
}
func forceErrorRandReader() func() {
old := rand.Reader
rand.Reader = new(errorReader)
return func() {
rand.Reader = old
}
}
|
