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How to use LookupIP method of mockresolver Package

Best K6 code snippet using mockresolver.LookupIP

resolver.go

Source:resolver.go

...36		hosts = make(map[string][]net.IP)37	}38	return &MockResolver{hosts: hosts, fallback: fallback}39}40// LookupIP returns the first IP mapped for host.41func (r *MockResolver) LookupIP(host string) (net.IP, error) {42	if ips, err := r.LookupIPAll(host); err != nil {43		return nil, err44	} else if len(ips) > 0 {45		return ips[0], nil46	}47	return nil, nil48}49// LookupIPAll returns all IPs mapped for host. It mimics the net.LookupIP50// signature so that it can be used to mock netext.LookupIP in tests.51func (r *MockResolver) LookupIPAll(host string) ([]net.IP, error) {52	r.m.RLock()53	defer r.m.RUnlock()54	if ips, ok := r.hosts[host]; ok {55		return ips, nil56	}57	if r.fallback != nil {58		return r.fallback(host)59	}60	return nil, fmt.Errorf("lookup %s: no such host", host)61}62// Set the host to resolve to ip.63func (r *MockResolver) Set(host, ip string) {64	r.m.Lock()65	defer r.m.Unlock()...

LookupIP

Using AI Code Generation

1import (2func handler(w http.ResponseWriter, r *http.Request) {3    fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])4}5func main() {6    mockServer := httptest.NewServer(http.HandlerFunc(handler))7    mockResolver := &net.Resolver{8        Dial: func(ctx context.Context, network, address string) (net.Conn, error) {9            return net.Dial(network, mockServer.Listener.Addr().String())10        },11    }12    client := &http.Client{13        Transport: &http.Transport{14            DialContext: (&net.Dialer{15            }).DialContext,16        },17    }18    if err != nil {19        panic(err)20    }21    defer resp.Body.Close()22    dump, err := httputil.DumpResponse(resp, true)23    if err != nil {24        panic(err)25    }26    fmt.Printf("%q", dump)27}28Content-Type: text/plain; charset=utf-829Content-Type: text/plain; charset=utf-8

LookupIP

Using AI Code Generation

1import (2type mockResolver struct {3}4func (r *mockResolver) LookupIP(host string) ([]net.IP, error) {5}6func main() {7	ips := []net.IP{net.ParseIP("

LookupIP

Using AI Code Generation

1func main() {2    r := new(mockresolver)3    r.LookupIP("www.google.com")4}5func main() {6    r := new(mockresolver)7    r.LookupIP("www.google.com")8}9import (10type A struct {11}12func (a *A) GetA() string {13}14type B struct {15}16func (b *B) GetB() string {17}18type C struct {19}20func (c *C) GetC() string {21    return c.GetA() + c.GetB()22}23type D interface {24    GetC() string25}26func NewD() D {27    return &C{A{"a"}, B{"b"}}28}29func main() {30    d := NewD()31    fmt.Println(d.GetC())32}33Now I want to write a unit test for NewD() and I want to mock C.GetB() to return "c" instead of "b". I have the following code:34import (35func TestNewD(t *testing.T) {36    d := NewD()37    if d.GetC() != "ac" {38        t.Errorf("d.GetC() = %v, want %v", d.GetC(), "ac")39    }40}41d.GetC() = ab, want ac42How can I mock C.GetB() to return "c" instead of "b" in the unit

LookupIP

Using AI Code Generation

1func (r *Resolver) LookupIP(ctx context.Context, network, host string) ([]IP, error) {2	if r.dialer != nil {3		return r.dialer(ctx, network, host)4	}5	return r.LookupIP(ctx, network, host)6}7func (r *Resolver) LookupIPAddr(ctx context.Context, host string) ([]IPAddr, error) {8	if r.dialer != nil {9		return r.dialer(ctx, "ip", host)10	}11	return r.LookupIPAddr(ctx, host)12}13func (r *Resolver) LookupHost(ctx context.Context, host string) ([]string, error) {14	if r.dialer != nil {15		addrs, err := r.dialer(ctx, "ip", host)16		if err != nil {17		}18		for _, addr := range addrs {19			s = append(s, addr.String())20		}21	}22	return r.LookupHost(ctx, host)23}24func (r *Resolver) LookupPort(ctx context.Context, network, service string) (int, error) {25	if r.dialer != nil {26		return r.dialer(ctx, network, service)27	}28	return r.LookupPort(ctx, network, service)29}30func (r *Resolver) LookupCNAME(ctx context.Context, host string) (string, error) {31	if r.dialer != nil {32		return r.dialer(ctx, "ip", host)33	}34	return r.LookupCNAME(ctx, host)35}36func (r *Resolver) LookupSRV(ctx context.Context, service, proto, name string) (string, []*SRV, error) {37	if r.dialer != nil {38		return r.dialer(ctx, "ip", name)39	}40	return r.LookupSRV(ctx, service, proto, name)41}

LookupIP

Using AI Code Generation

1func main() {2    resolver = new(mockresolver)3    fmt.Println(resolver.LookupIP("google.com"))4}5func main() {6    resolver = new(netresolver)7    fmt.Println(resolver.LookupIP("google.com"))8}

LookupIP

Using AI Code Generation

1func main() {2    fmt.Println("Hello, playground")3    mr := new(mockresolver)4    resolver := net.Resolver{PreferGo: true, Dial: mr.dial}5    ips, err := resolver.LookupIP(context.Background(), "ip", "www.google.com")6    if err != nil {7        fmt.Println(err)8    }9    fmt.Println(ips)10}11func main() {12    fmt.Println("Hello, playground")13    mr := new(mockresolver)14    resolver := net.Resolver{PreferGo: true, Dial: mr.dial}15    ips, err := resolver.LookupIPAddr(context.Background(), "www.google.com")16    if err != nil {17        fmt.Println(err)18    }19    fmt.Println(ips)20}

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