c5dd9a68f1
While there, make sure we require using &netxmocks.Dialer. Still part of https://github.com/ooni/probe/issues/1505
162 lines
4.1 KiB
Go
162 lines
4.1 KiB
Go
package netxlite
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import (
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"context"
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"errors"
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"io"
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"net"
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"strings"
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"testing"
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"time"
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"github.com/apex/log"
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"github.com/ooni/probe-cli/v3/internal/netxmocks"
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)
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func TestDialerResolverNoPort(t *testing.T) {
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dialer := &DialerResolver{Dialer: new(net.Dialer), Resolver: DefaultResolver}
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conn, err := dialer.DialContext(context.Background(), "tcp", "antani.ooni.nu")
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if err == nil {
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t.Fatal("expected an error here")
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}
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if conn != nil {
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t.Fatal("expected a nil conn here")
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}
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}
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func TestDialerResolverLookupHostAddress(t *testing.T) {
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dialer := &DialerResolver{Dialer: new(net.Dialer), Resolver: MockableResolver{
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Err: errors.New("mocked error"),
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}}
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addrs, err := dialer.lookupHost(context.Background(), "1.1.1.1")
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if err != nil {
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t.Fatal(err)
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}
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if len(addrs) != 1 || addrs[0] != "1.1.1.1" {
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t.Fatal("not the result we expected")
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}
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}
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func TestDialerResolverLookupHostFailure(t *testing.T) {
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expected := errors.New("mocked error")
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dialer := &DialerResolver{Dialer: new(net.Dialer), Resolver: MockableResolver{
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Err: expected,
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}}
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conn, err := dialer.DialContext(context.Background(), "tcp", "dns.google.com:853")
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if !errors.Is(err, expected) {
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t.Fatal("not the error we expected")
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}
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if conn != nil {
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t.Fatal("expected nil conn")
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}
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}
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type MockableResolver struct {
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Addresses []string
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Err error
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}
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func (r MockableResolver) LookupHost(ctx context.Context, host string) ([]string, error) {
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return r.Addresses, r.Err
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}
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func (r MockableResolver) Network() string {
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return "mockable"
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}
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func (r MockableResolver) Address() string {
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return ""
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}
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func TestDialerResolverDialForSingleIPFails(t *testing.T) {
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dialer := &DialerResolver{Dialer: &netxmocks.Dialer{
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MockDialContext: func(ctx context.Context, network string, address string) (net.Conn, error) {
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return nil, io.EOF
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},
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}, Resolver: DefaultResolver}
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conn, err := dialer.DialContext(context.Background(), "tcp", "1.1.1.1:853")
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if !errors.Is(err, io.EOF) {
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t.Fatal("not the error we expected")
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}
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if conn != nil {
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t.Fatal("expected nil conn")
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}
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}
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func TestDialerResolverDialForManyIPFails(t *testing.T) {
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dialer := &DialerResolver{
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Dialer: &netxmocks.Dialer{
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MockDialContext: func(ctx context.Context, network string, address string) (net.Conn, error) {
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return nil, io.EOF
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},
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}, Resolver: MockableResolver{
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Addresses: []string{"1.1.1.1", "8.8.8.8"},
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}}
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conn, err := dialer.DialContext(context.Background(), "tcp", "dot.dns:853")
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if !errors.Is(err, io.EOF) {
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t.Fatal("not the error we expected")
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}
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if conn != nil {
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t.Fatal("expected nil conn")
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}
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}
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func TestDialerResolverDialForManyIPSuccess(t *testing.T) {
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dialer := &DialerResolver{Dialer: &netxmocks.Dialer{
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MockDialContext: func(ctx context.Context, network string, address string) (net.Conn, error) {
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return &netxmocks.Conn{
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MockClose: func() error {
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return nil
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},
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}, nil
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},
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}, Resolver: MockableResolver{
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Addresses: []string{"1.1.1.1", "8.8.8.8"},
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}}
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conn, err := dialer.DialContext(context.Background(), "tcp", "dot.dns:853")
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if err != nil {
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t.Fatal("expected nil error here")
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}
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if conn == nil {
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t.Fatal("expected non-nil conn")
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}
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conn.Close()
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}
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func TestDialerLoggerFailure(t *testing.T) {
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d := &DialerLogger{
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Dialer: &netxmocks.Dialer{
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MockDialContext: func(ctx context.Context, network string, address string) (net.Conn, error) {
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return nil, io.EOF
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},
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},
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Logger: log.Log,
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}
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conn, err := d.DialContext(context.Background(), "tcp", "www.google.com:443")
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if !errors.Is(err, io.EOF) {
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t.Fatal("not the error we expected")
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}
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if conn != nil {
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t.Fatal("expected nil conn here")
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}
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}
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func TestDefaultDialerWorks(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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cancel() // fail immediately
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conn, err := DefaultDialer.DialContext(ctx, "tcp", "8.8.8.8:853")
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if err == nil || !strings.HasSuffix(err.Error(), "operation was canceled") {
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t.Fatal("not the error we expected", err)
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}
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if conn != nil {
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t.Fatal("expected nil conn here")
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}
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}
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func TestDefaultDialerHasTimeout(t *testing.T) {
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expected := 15 * time.Second
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if DefaultDialer.Timeout != expected {
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t.Fatal("unexpected timeout value")
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}
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}
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