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14a955db2f
This reverts commit 7639e193ff.
Signed-off-by: Albin Kerouanton <albin.kerouanton@docker.com>
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
//go:build !windows
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package libnetwork
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import (
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"bytes"
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"context"
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"os"
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"testing"
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"github.com/moby/moby/v2/daemon/libnetwork/config"
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"github.com/moby/moby/v2/daemon/libnetwork/internal/resolvconf"
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"gotest.tools/v3/assert"
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is "gotest.tools/v3/assert/cmp"
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)
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func getResolvConfOptions(t *testing.T, rcPath string) []string {
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t.Helper()
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resolv, err := os.ReadFile(rcPath)
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assert.NilError(t, err)
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rc, err := resolvconf.Parse(bytes.NewBuffer(resolv), "")
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assert.NilError(t, err)
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return rc.Options()
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}
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func TestDNSOptions(t *testing.T) {
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c, err := New(context.Background(), config.OptionDataDir(t.TempDir()))
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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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dnsOptionsList := getResolvConfOptions(t, sb.config.resolvConfPath)
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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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dnsOptionsList = getResolvConfOptions(t, sb.config.resolvConfPath)
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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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dnsOptionsList = getResolvConfOptions(t, sb.config.resolvConfPath)
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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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dnsOptionsList = getResolvConfOptions(t, sb2.config.resolvConfPath)
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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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dnsOptionsList = getResolvConfOptions(t, sb2.config.resolvConfPath)
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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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dnsOptionsList = getResolvConfOptions(t, sb2.config.resolvConfPath)
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assert.Check(t, is.DeepEqual([]string{"ndots:0"}, dnsOptionsList))
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}
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