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07be7b087d
The SetupTestOSContext calls were made conditional in https://github.com/moby/libnetwork/pull/148 to work around limitations in runtime.LockOSThread() which existed before Go 1.10. This workaround is no longer necessary now that runtime.UnlockOSThread() needs to be called an equal number of times before the goroutine is unlocked from the OS thread. Unfortunately some tests break when SetupTestOSContext is not skipped. (Evidently this code path has not been exercised in a long time.) A newly-created network namespace is very barebones: it contains a loopback interface in the down state and little else. Even pinging localhost does not work inside of a brand new namespace. Set the loopback interface to up during namespace setup so that tests which need to use the loopback interface can do so. Signed-off-by: Cory Snider <csnider@mirantis.com>
75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
//go:build !windows
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// +build !windows
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package libnetwork
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import (
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"os"
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"testing"
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"github.com/docker/docker/libnetwork/ipamapi"
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"github.com/docker/docker/libnetwork/osl"
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"github.com/docker/docker/libnetwork/testutils"
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)
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func TestHostsEntries(t *testing.T) {
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defer testutils.SetupTestOSContext(t)()
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expectedHostsFile := `127.0.0.1 localhost
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::1 localhost ip6-localhost ip6-loopback
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fe00::0 ip6-localnet
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ff00::0 ip6-mcastprefix
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ff02::1 ip6-allnodes
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ff02::2 ip6-allrouters
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192.168.222.2 somehost.example.com somehost
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fe90::2 somehost.example.com somehost
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`
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opts := []NetworkOption{NetworkOptionEnableIPv6(true), NetworkOptionIpam(ipamapi.DefaultIPAM, "",
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[]*IpamConf{{PreferredPool: "192.168.222.0/24", Gateway: "192.168.222.1"}},
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[]*IpamConf{{PreferredPool: "fe90::/64", Gateway: "fe90::1"}},
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nil)}
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c, nws := getTestEnv(t, opts)
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ctrlr := c.(*controller)
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hostsFile, err := os.CreateTemp("", "")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(hostsFile.Name())
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sbx, err := ctrlr.NewSandbox("sandbox1", OptionHostsPath(hostsFile.Name()), OptionHostname("somehost.example.com"))
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if err != nil {
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t.Fatal(err)
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}
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ep1, err := nws[0].CreateEndpoint("ep1")
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if err != nil {
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t.Fatal(err)
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}
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if err := ep1.Join(sbx, JoinOptionPriority(1)); err != nil {
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t.Fatal(err)
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}
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data, err := os.ReadFile(hostsFile.Name())
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if err != nil {
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t.Fatal(err)
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}
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if string(data) != expectedHostsFile {
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t.Fatalf("expected the hosts file to read:\n%q\nbut instead got the following:\n%q\n", expectedHostsFile, string(data))
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}
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if err := sbx.Delete(); err != nil {
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t.Fatal(err)
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}
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if len(ctrlr.sandboxes) != 0 {
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t.Fatalf("controller sandboxes is not empty. len = %d", len(ctrlr.sandboxes))
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}
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osl.GC()
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}
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