github.com/Psiphon-Inc/goarista@v0.0.0-20160825065156-d002785f4c67/monotime/nanotime_test.go (about)

     1  // Copyright (C) 2016  Arista Networks, Inc.
     2  // Use of this source code is governed by the Apache License 2.0
     3  // that can be found in the COPYING file.
     4  
     5  // Package monotime provides a fast monotonic clock source.
     6  package monotime_test
     7  
     8  import (
     9  	"testing"
    10  
    11  	. "github.com/aristanetworks/goarista/monotime"
    12  )
    13  
    14  func TestNow(t *testing.T) {
    15  	for i := 0; i < 100; i++ {
    16  		t1 := Now()
    17  		t2 := Now()
    18  		// I honestly thought that we needed >= here, but in some environments
    19  		// two consecutive calls can return the same value!
    20  		if t1 > t2 {
    21  			t.Fatalf("t1=%d should have been less than or equal to t2=%d", t1, t2)
    22  		}
    23  	}
    24  }