github.com/containerd/nerdctl/v2@v2.0.0-beta.5.0.20240520001846-b5758f54fa28/pkg/dnsutil/hostsstore/hosts_test.go (about)

     1  /*
     2     Copyright The containerd 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 hostsstore
    18  
    19  import (
    20  	"bytes"
    21  	"strings"
    22  	"testing"
    23  
    24  	"gotest.tools/v3/assert"
    25  )
    26  
    27  func TestParseHostsButSkipMarkedRegion(t *testing.T) {
    28  	type testCase struct {
    29  		hostsFileContent string
    30  		want             string
    31  	}
    32  	testCases := []testCase{
    33  		{
    34  			hostsFileContent: `
    35  10.4.1.6        outOfMarkedRegion
    36  # <nerdctl>
    37  127.0.0.1       localhost localhost.localdomain
    38  ::1             localhost localhost.localdomain
    39  10.4.1.5        35af3f0922a9 35af3f0922a9.etcd-0 alpine-35af3 alpine-35af3.etcd-0
    40  10.4.1.3        993208adcae8 993208adcae8.etcd-0 alpine-99320 alpine-99320.etcd-0
    41  # </nerdctl>
    42  `,
    43  			want: `10.4.1.6        outOfMarkedRegion
    44  `,
    45  		},
    46  		{
    47  			hostsFileContent: `
    48  		# <nerdctl>
    49  		127.0.0.1       localhost localhost.localdomain
    50  		::1             localhost localhost.localdomain
    51  		10.4.1.5        35af3f0922a9 35af3f0922a9.etcd-0 alpine-35af3 alpine-35af3.etcd-0
    52  		10.4.1.3        993208adcae8 993208adcae8.etcd-0 alpine-99320 alpine-99320.etcd-0
    53  		# </nerdctl>
    54  		`,
    55  			want: "",
    56  		},
    57  	}
    58  	for _, tc := range testCases {
    59  		var buf bytes.Buffer
    60  		r := strings.NewReader(tc.hostsFileContent)
    61  		err := parseHostsButSkipMarkedRegion(&buf, r)
    62  		assert.NilError(t, err)
    63  		assert.DeepEqual(t, buf.String(), tc.want)
    64  
    65  	}
    66  }