67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
package resource
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import (
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"regexp"
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"strings"
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"testing"
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"time"
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)
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var allDigits = regexp.MustCompile(`^\d+$`)
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var allHex = regexp.MustCompile(`^[a-f0-9]+$`)
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func TestUniqueId(t *testing.T) {
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split := func(rest string) (timestamp, increment string) {
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return rest[:18], rest[18:]
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}
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iterations := 10000
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ids := make(map[string]struct{})
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var id, lastId string
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for i := 0; i < iterations; i++ {
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id = UniqueId()
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if _, ok := ids[id]; ok {
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t.Fatalf("Got duplicated id! %s", id)
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}
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if !strings.HasPrefix(id, UniqueIdPrefix) {
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t.Fatalf("Unique ID didn't have terraform- prefix! %s", id)
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}
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rest := strings.TrimPrefix(id, UniqueIdPrefix)
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if len(rest) != UniqueIDSuffixLength {
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t.Fatalf("PrefixedUniqueId is out of sync with UniqueIDSuffixLength, post-prefix part has wrong length! %s", rest)
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}
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timestamp, increment := split(rest)
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if !allDigits.MatchString(timestamp) {
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t.Fatalf("Timestamp not all digits! %s", timestamp)
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}
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if !allHex.MatchString(increment) {
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t.Fatalf("Increment part not all hex! %s", increment)
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}
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if lastId != "" && lastId >= id {
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t.Fatalf("IDs not ordered! %s vs %s", lastId, id)
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}
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ids[id] = struct{}{}
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lastId = id
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}
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id1 := UniqueId()
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time.Sleep(time.Millisecond)
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id2 := UniqueId()
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timestamp1, _ := split(strings.TrimPrefix(id1, UniqueIdPrefix))
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timestamp2, _ := split(strings.TrimPrefix(id2, UniqueIdPrefix))
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if timestamp1 == timestamp2 {
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t.Fatalf("Timestamp part should update at least once a millisecond %s %s",
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id1, id2)
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}
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}
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