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97 lines
2.8 KiB
Go
97 lines
2.8 KiB
Go
//go:build !windows
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package libnetwork
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import (
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"context"
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"runtime"
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"testing"
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"github.com/docker/docker/libnetwork/resolvconf"
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"gotest.tools/v3/assert"
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is "gotest.tools/v3/assert/cmp"
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"gotest.tools/v3/skip"
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)
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func TestDNSOptions(t *testing.T) {
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skip.If(t, runtime.GOOS == "windows", "test only works on linux")
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c, err := New(OptionBoltdbWithRandomDBFile(t))
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assert.NilError(t, err)
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sb, err := c.NewSandbox(context.Background(), "cnt1", nil)
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assert.NilError(t, err)
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cleanup := func(s *Sandbox) {
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if err := s.Delete(context.Background()); err != nil {
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t.Error(err)
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}
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}
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defer cleanup(sb)
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sb.startResolver(false)
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err = sb.setupDNS()
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assert.NilError(t, err)
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err = sb.rebuildDNS()
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assert.NilError(t, err)
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currRC, err := resolvconf.GetSpecific(sb.config.resolvConfPath)
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assert.NilError(t, err)
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dnsOptionsList := resolvconf.GetOptions(currRC.Content)
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assert.Check(t, is.Len(dnsOptionsList, 1))
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assert.Check(t, is.Equal("ndots:0", dnsOptionsList[0]))
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sb.config.dnsOptionsList = []string{"ndots:5"}
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err = sb.setupDNS()
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assert.NilError(t, err)
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currRC, err = resolvconf.GetSpecific(sb.config.resolvConfPath)
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assert.NilError(t, err)
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dnsOptionsList = resolvconf.GetOptions(currRC.Content)
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assert.Check(t, is.Len(dnsOptionsList, 1))
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assert.Check(t, is.Equal("ndots:5", dnsOptionsList[0]))
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err = sb.rebuildDNS()
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assert.NilError(t, err)
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currRC, err = resolvconf.GetSpecific(sb.config.resolvConfPath)
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assert.NilError(t, err)
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dnsOptionsList = resolvconf.GetOptions(currRC.Content)
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assert.Check(t, is.Len(dnsOptionsList, 1))
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assert.Check(t, is.Equal("ndots:5", dnsOptionsList[0]))
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sb2, err := c.NewSandbox(context.Background(), "cnt2", nil)
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assert.NilError(t, err)
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defer cleanup(sb2)
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sb2.startResolver(false)
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sb2.config.dnsOptionsList = []string{"ndots:0"}
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err = sb2.setupDNS()
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assert.NilError(t, err)
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err = sb2.rebuildDNS()
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assert.NilError(t, err)
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currRC, err = resolvconf.GetSpecific(sb2.config.resolvConfPath)
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assert.NilError(t, err)
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dnsOptionsList = resolvconf.GetOptions(currRC.Content)
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assert.Check(t, is.Len(dnsOptionsList, 1))
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assert.Check(t, is.Equal("ndots:0", dnsOptionsList[0]))
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sb2.config.dnsOptionsList = []string{"ndots:foobar"}
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err = sb2.setupDNS()
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assert.NilError(t, err)
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err = sb2.rebuildDNS()
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assert.NilError(t, err)
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currRC, err = resolvconf.GetSpecific(sb2.config.resolvConfPath)
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assert.NilError(t, err)
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dnsOptionsList = resolvconf.GetOptions(currRC.Content)
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assert.Check(t, is.DeepEqual([]string{"ndots:0"}, dnsOptionsList))
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sb2.config.dnsOptionsList = []string{"ndots:-1"}
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err = sb2.setupDNS()
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assert.NilError(t, err)
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err = sb2.rebuildDNS()
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assert.NilError(t, err)
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currRC, err = resolvconf.GetSpecific(sb2.config.resolvConfPath)
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assert.NilError(t, err)
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dnsOptionsList = resolvconf.GetOptions(currRC.Content)
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assert.Check(t, is.DeepEqual([]string{"ndots:0"}, dnsOptionsList))
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}
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