vbatts/pkg
1
0
Fork 0
Code Pull requests Releases Activity

Fixes #11721 removed GenerateRandomString

Browse source 
Signed-off-by: Peter Esbensen <pkesbensen@gmail.com>

gofmt

Signed-off-by: Peter Esbensen <pkesbensen@gmail.com>
This commit is contained in:
Peter Esbensen 2015-04-01 07:21:07 -07:00
parent ae440baf74
commit 88e878b013
2 changed files with 2 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
stringutils/stringutils.go
View file

@ -1,23 +1,10 @@
package stringutils package stringutils
import ( import (
"crypto/rand"
"encoding/hex"
"io"
mathrand "math/rand" mathrand "math/rand"
"time" "time"
) )
// Generate 32 chars random string
func GenerateRandomString() string {
id := make([]byte, 32)
if _, err := io.ReadFull(rand.Reader, id); err != nil {
panic(err) // This shouldn't happen
}
return hex.EncodeToString(id)
}
// Generate alpha only random stirng with length n // Generate alpha only random stirng with length n
func GenerateRandomAlphaOnlyString(n int) string { func GenerateRandomAlphaOnlyString(n int) string {
// make a really long string // make a really long string

26
stringutils/stringutils_test.go
View file

@ -2,34 +2,12 @@ package stringutils
import "testing" import "testing"
func TestRandomString(t *testing.T) {
str := GenerateRandomString()
if len(str) != 64 {
t.Fatalf("Id returned is incorrect: %s", str)
}
}
func TestRandomStringUniqueness(t *testing.T) {
repeats := 25
set := make(map[string]struct{}, repeats)
for i := 0; i < repeats; i = i + 1 {
str := GenerateRandomString()
if len(str) != 64 {
t.Fatalf("Id returned is incorrect: %s", str)
}
if _, ok := set[str]; ok {
t.Fatalf("Random number is repeated")
}
set[str] = struct{}{}
}
}
func testLengthHelper(generator func(int) string, t *testing.T) { func testLengthHelper(generator func(int) string, t *testing.T) {
expectedLength := 20 expectedLength := 20
s := generator(expectedLength) s := generator(expectedLength)
if len(s) != expectedLength { if len(s) != expectedLength {
t.Fatalf("Length of %s was %d but expected length %d", s, len(s), expectedLength) t.Fatalf("Length of %s was %d but expected length %d", s, len(s), expectedLength)
} }
} }
func testUniquenessHelper(generator func(int) string, t *testing.T) { func testUniquenessHelper(generator func(int) string, t *testing.T) {
@ -65,7 +43,7 @@ func TestGenerateRandomAlphaOnlyStringUniqueness(t *testing.T) {
} }
func TestGenerateRandomAsciiStringLength(t *testing.T) { func TestGenerateRandomAsciiStringLength(t *testing.T) {
testLengthHelper(GenerateRandomAsciiString, t) testLengthHelper(GenerateRandomAsciiString, t)
} }
func TestGenerateRandomAsciiStringUniqueness(t *testing.T) { func TestGenerateRandomAsciiStringUniqueness(t *testing.T) {