47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package acctest
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import (
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"math/rand"
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"time"
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)
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// Helpers for generating random tidbits for use in identifiers to prevent
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// collisions in acceptance tests.
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// RandInt generates a random integer
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func RandInt() int {
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reseed()
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return rand.New(rand.NewSource(time.Now().UnixNano())).Int()
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}
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// RandString generates a random alphanumeric string of the length specified
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func RandString(strlen int) string {
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return RandStringFromCharSet(strlen, CharSetAlphaNum)
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}
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// RandStringFromCharSet generates a random string by selecting characters from
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// the charset provided
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func RandStringFromCharSet(strlen int, charSet string) string {
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reseed()
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result := make([]byte, strlen)
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for i := 0; i < strlen; i++ {
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result[i] = charSet[rand.Intn(len(charSet))]
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}
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return string(result)
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}
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// Seeds random with current timestamp
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func reseed() {
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rand.Seed(time.Now().UTC().UnixNano())
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}
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const (
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// CharSetAlphaNum is the alphanumeric character set for use with
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// RandStringFromCharSet
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CharSetAlphaNum = "abcdefghijklmnopqrstuvwxyz012346789"
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// CharSetAlpha is the alphabetical character set for use with
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// RandStringFromCharSet
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CharSetAlpha = "abcdefghijklmnopqrstuvwxyz"
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)
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