github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/testutils/soon_test.go (about)

     1  // Copyright 2016 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package testutils
    12  
    13  import (
    14  	"testing"
    15  	"time"
    16  
    17  	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
    18  	"github.com/cockroachdb/errors"
    19  )
    20  
    21  func TestSucceedsSoon(t *testing.T) {
    22  	// Try a method which always succeeds.
    23  	SucceedsSoon(t, func() error { return nil })
    24  
    25  	// Try a method which succeeds after a known duration.
    26  	start := timeutil.Now()
    27  	duration := time.Millisecond * 10
    28  	SucceedsSoon(t, func() error {
    29  		elapsed := timeutil.Since(start)
    30  		if elapsed > duration {
    31  			return nil
    32  		}
    33  		return errors.Errorf("%s elapsed, waiting until %s elapses", elapsed, duration)
    34  	})
    35  }