wireguard-go/tai64n/tai64n_test.go

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/* SPDX-License-Identifier: MIT
*
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* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package tai64n
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import (
"testing"
"time"
)
/* Testing the essential property of the timestamp
* as used by WireGuard.
*/
func TestMonotonic(t *testing.T) {
old := Now()
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for i := 0; i < 50; i++ {
next := Now()
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if next.After(old) {
t.Error("Whitening insufficient")
}
time.Sleep(time.Duration(whitenerMask)/time.Nanosecond + 1)
next = Now()
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if !next.After(old) {
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t.Error("Not monotonically increasing on whitened nano-second scale")
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}
old = next
}
}