github.com/rkt/rkt@v1.30.1-0.20200224141603-171c416fac02/tests/testutils/utils.go (about)

     1  // Copyright 2015 The rkt Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package testutils
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  	"testing"
    21  	"time"
    22  )
    23  
    24  const (
    25  	nobodyUid = 65534
    26  	nobodyGid = 65534
    27  )
    28  
    29  func GetUnprivilegedUidGid() (int, int) {
    30  	return nobodyUid, nobodyGid
    31  }
    32  
    33  func GetValueFromEnvOrPanic(envVar string) string {
    34  	path := os.Getenv(envVar)
    35  	if path == "" {
    36  		panic(fmt.Sprintf("Empty %v environment variable\n", envVar))
    37  	}
    38  	return path
    39  }
    40  
    41  func WaitOrTimeout(t *testing.T, timeout time.Duration, notify chan struct{}) {
    42  	select {
    43  	case <-time.After(timeout):
    44  		t.Fatalf("Timeout after %v", timeout)
    45  	case <-notify:
    46  	}
    47  }