cadvisor_linux_test.go

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

     1  //go:build linux
     2  // +build linux
     3  
     4  /*
     5  Copyright 2021 The Kubernetes Authors.
     6  
     7  Licensed under the Apache License, Version 2.0 (the "License");
     8  you may not use this file except in compliance with the License.
     9  You may obtain a copy of the License at
    10  
    11      http://www.apache.org/licenses/LICENSE-2.0
    12  
    13  Unless required by applicable law or agreed to in writing, software
    14  distributed under the License is distributed on an "AS IS" BASIS,
    15  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    16  See the License for the specific language governing permissions and
    17  limitations under the License.
    18  */
    19  
    20  package cadvisor
    21  
    22  import (
    23  	"fmt"
    24  	"testing"
    25  
    26  	"github.com/stretchr/testify/assert"
    27  
    28  	"github.com/google/cadvisor/container/crio"
    29  	cadvisorfs "github.com/google/cadvisor/fs"
    30  )
    31  
    32  func TestImageFsInfoLabel(t *testing.T) {
    33  	testcases := []struct {
    34  		description     string
    35  		runtime         string
    36  		runtimeEndpoint string
    37  		expectedLabel   string
    38  		expectedError   error
    39  	}{{
    40  		description:     "LabelCrioImages should be returned",
    41  		runtimeEndpoint: crio.CrioSocket,
    42  		expectedLabel:   cadvisorfs.LabelCrioImages,
    43  		expectedError:   nil,
    44  	}, {
    45  		description:     "Cannot find valid imagefs label",
    46  		runtimeEndpoint: "",
    47  		expectedLabel:   "",
    48  		expectedError:   fmt.Errorf("no imagefs label for configured runtime"),
    49  	}}
    50  
    51  	for _, tc := range testcases {
    52  		t.Run(tc.description, func(t *testing.T) {
    53  			infoProvider := NewImageFsInfoProvider(tc.runtimeEndpoint)
    54  			label, err := infoProvider.ImageFsInfoLabel()
    55  			assert.Equal(t, tc.expectedLabel, label)
    56  			assert.Equal(t, tc.expectedError, err)
    57  		})
    58  	}
    59  }
    60  
    61  func TestContainerFsInfoLabel(t *testing.T) {
    62  	testcases := []struct {
    63  		description     string
    64  		runtime         string
    65  		runtimeEndpoint string
    66  		expectedLabel   string
    67  		expectedError   error
    68  	}{{
    69  		description:     "LabelCrioWriteableImages should be returned",
    70  		runtimeEndpoint: crio.CrioSocket,
    71  		expectedLabel:   cadvisorfs.LabelCrioContainers,
    72  		expectedError:   nil,
    73  	}, {
    74  		description:     "Cannot find valid imagefs label",
    75  		runtimeEndpoint: "",
    76  		expectedLabel:   "",
    77  		expectedError:   fmt.Errorf("no containerfs label for configured runtime"),
    78  	}}
    79  
    80  	for _, tc := range testcases {
    81  		t.Run(tc.description, func(t *testing.T) {
    82  			infoProvider := NewImageFsInfoProvider(tc.runtimeEndpoint)
    83  			label, err := infoProvider.ContainerFsInfoLabel()
    84  			assert.Equal(t, tc.expectedLabel, label)
    85  			assert.Equal(t, tc.expectedError, err)
    86  		})
    87  	}
    88  }
    89
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