github.com/mirantis/virtlet@v1.5.2-0.20191204181327-1659b8a48e9b/pkg/tools/vnc_test.go (about)

     1  /*
     2  Copyright 2018 Mirantis
     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 tools
    18  
    19  import (
    20  	"bytes"
    21  	"strings"
    22  	"testing"
    23  )
    24  
    25  func TestVNCCommand(t *testing.T) {
    26  	for _, tc := range []struct {
    27  		args                 string
    28  		expectedCommands     map[string]string
    29  		expectedPortForwards []string
    30  		expectedOutput       string
    31  		errSubstring         string
    32  	}{
    33  		{
    34  			args: "cirros",
    35  			expectedCommands: map[string]string{
    36  				"virtlet-foo42/libvirt/kube-system: virsh domdisplay virtlet-cc349e91-dcf7-foocontainer": "vnc://127.0.0.1:0",
    37  			},
    38  			expectedPortForwards: []string{
    39  				"virtlet-foo42/kube-system: :5900",
    40  			},
    41  			expectedOutput: "Press ctrl-c",
    42  		},
    43  		{
    44  			args:         "ubuntu",
    45  			errSubstring: "can't get VM pod info",
    46  		},
    47  	} {
    48  		t.Run(tc.args, func(t *testing.T) {
    49  			c := &fakeKubeClient{
    50  				t: t,
    51  				virtletPods: map[string]string{
    52  					"kube-node-1": "virtlet-foo42",
    53  				},
    54  				vmPods: map[string]VMPodInfo{
    55  					"cirros": {
    56  						NodeName:       "kube-node-1",
    57  						VirtletPodName: "virtlet-foo42",
    58  						ContainerID:    "cc349e91-dcf7-4f11-a077-36c3673c3fc4",
    59  						ContainerName:  "foocontainer",
    60  					},
    61  				},
    62  				expectedCommands:     tc.expectedCommands,
    63  				expectedPortForwards: tc.expectedPortForwards,
    64  			}
    65  			var out bytes.Buffer
    66  			cmd := NewVNCCmd(c, &out, false)
    67  			cmd.SetArgs(strings.Split(tc.args, " "))
    68  			cmd.SilenceUsage = true
    69  			cmd.SilenceErrors = true
    70  			switch err := cmd.Execute(); {
    71  			case err != nil && tc.errSubstring == "":
    72  				t.Errorf("vnc command returned an unexpected error: %v", err)
    73  			case err == nil && tc.errSubstring != "":
    74  				t.Errorf("Didn't get expected error (substring %q), output: %q", tc.errSubstring, out.String())
    75  			case err != nil && !strings.Contains(err.Error(), tc.errSubstring):
    76  				t.Errorf("Didn't get expected substring %q in the error: %v", tc.errSubstring, err)
    77  			case err == nil && !strings.Contains(out.String(), tc.expectedOutput):
    78  				t.Errorf("Unexpected output from the command: %q instead of %q", out.String(), tc.expectedOutput)
    79  			}
    80  			for c := range tc.expectedCommands {
    81  				t.Errorf("command not executed: %q", c)
    82  			}
    83  		})
    84  	}
    85  }