file_test.go

Documentation: k8s.io/kubernetes/pkg/kubelet/config

     1  /*
     2  Copyright 2016 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package config
    18  
    19  import (
    20  	"os"
    21  	"path/filepath"
    22  	"testing"
    23  	"time"
    24  
    25  	apiequality "k8s.io/apimachinery/pkg/api/equality"
    26  	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
    27  )
    28  
    29  func TestExtractFromBadDataFile(t *testing.T) {
    30  	dirName, err := mkTempDir("file-test")
    31  	if err != nil {
    32  		t.Fatalf("unable to create temp dir: %v", err)
    33  	}
    34  	defer removeAll(dirName, t)
    35  
    36  	fileName := filepath.Join(dirName, "test_pod_config")
    37  	err = os.WriteFile(fileName, []byte{1, 2, 3}, 0555)
    38  	if err != nil {
    39  		t.Fatalf("unable to write test file %#v", err)
    40  	}
    41  
    42  	ch := make(chan interface{}, 1)
    43  	lw := newSourceFile(fileName, "localhost", time.Millisecond, ch)
    44  	err = lw.listConfig()
    45  	if err == nil {
    46  		t.Fatalf("expected error, got nil")
    47  	}
    48  	expectEmptyChannel(t, ch)
    49  }
    50  
    51  func TestExtractFromEmptyDir(t *testing.T) {
    52  	dirName, err := mkTempDir("file-test")
    53  	if err != nil {
    54  		t.Fatalf("unexpected error: %v", err)
    55  	}
    56  	defer removeAll(dirName, t)
    57  
    58  	ch := make(chan interface{}, 1)
    59  	lw := newSourceFile(dirName, "localhost", time.Millisecond, ch)
    60  	err = lw.listConfig()
    61  	if err != nil {
    62  		t.Fatalf("unexpected error: %v", err)
    63  	}
    64  
    65  	update, ok := (<-ch).(kubetypes.PodUpdate)
    66  	if !ok {
    67  		t.Fatalf("unexpected type: %#v", update)
    68  	}
    69  	expected := CreatePodUpdate(kubetypes.SET, kubetypes.FileSource)
    70  	if !apiequality.Semantic.DeepEqual(expected, update) {
    71  		t.Fatalf("expected %#v, got %#v", expected, update)
    72  	}
    73  }
    74  
    75  func mkTempDir(prefix string) (string, error) {
    76  	return os.MkdirTemp(os.TempDir(), prefix)
    77  }
    78  
    79  func removeAll(dir string, t *testing.T) {
    80  	if err := os.RemoveAll(dir); err != nil {
    81  		t.Fatalf("unable to remove dir %s: %v", dir, err)
    82  	}
    83  }
    84
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