Golang martiantest.NewModifier函數代碼示例

func TestPriorityGroupModifyRequest(t *testing.T) {
	var order []string

	pg := NewGroup()

	tm50 := martiantest.NewModifier()
	tm50.RequestFunc(func(*http.Request) {
		order = append(order, "tm50")
	})
	pg.AddRequestModifier(tm50, 50)

	tm100a := martiantest.NewModifier()
	tm100a.RequestFunc(func(*http.Request) {
		order = append(order, "tm100a")
	})
	pg.AddRequestModifier(tm100a, 100)

	tm100b := martiantest.NewModifier()
	tm100b.RequestFunc(func(*http.Request) {
		order = append(order, "tm100b")
	})
	pg.AddRequestModifier(tm100b, 100)

	tm75 := martiantest.NewModifier()
	tm75.RequestFunc(func(*http.Request) {
		order = append(order, "tm75")
	})

	if err := pg.RemoveRequestModifier(tm75); err != ErrModifierNotFound {
		t.Fatalf("RemoveRequestModifier(): got %v, want ErrModifierNotFound", err)
	}

	pg.AddRequestModifier(tm75, 100)

	if err := pg.RemoveRequestModifier(tm75); err != nil {
		t.Fatalf("RemoveRequestModifier(): got %v, want no error", err)
	}

	req, err := http.NewRequest("GET", "http://example.com/", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}
	if err := pg.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}
	if got, want := order, []string{"tm100b", "tm100a", "tm50"}; !reflect.DeepEqual(got, want) {
		t.Fatalf("reflect.DeepEqual(%v, %v): got false, want true", got, want)
	}
}

func TestModifyRequest(t *testing.T) {
	f := NewFilter()

	tm := martiantest.NewModifier()
	f.SetRequestModifier("id", tm)

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("NewRequest(): got %v, want no error", err)
	}

	// No ID, auth required.
	f.SetAuthRequired(true)

	ctx := session.FromContext(nil)
	martian.SetContext(req, ctx)
	defer martian.RemoveContext(req)

	if err := f.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}

	actx := FromContext(ctx)
	if actx.Error() == nil {
		t.Error("actx.Error(): got nil, want error")
	}
	if tm.RequestModified() {
		t.Error("tm.RequestModified(): got true, want false")
	}
	tm.Reset()

	// No ID, auth not required.
	f.SetAuthRequired(false)
	actx.SetError(nil)

	if err := f.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}

	if actx.Error() != nil {
		t.Errorf("actx.Error(): got %v, want no error", err)
	}
	if tm.RequestModified() {
		t.Error("tm.RequestModified(): got true, want false")
	}

	// Valid ID.
	actx.SetError(nil)
	actx.SetID("id")

	if err := f.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}
	if actx.Error() != nil {
		t.Errorf("actx.Error(): got %v, want no error", actx.Error())
	}
	if !tm.RequestModified() {
		t.Error("tm.RequestModified(): got false, want true")
	}
}

func TestResultModifierAccessors(t *testing.T) {
	tm := martiantest.NewModifier()

	r := &Result{
		reqmod: tm,
		resmod: nil,
	}
	if reqmod := r.RequestModifier(); reqmod == nil {
		t.Error("r.RequestModifier: got nil, want reqmod")
	}

	if resmod := r.ResponseModifier(); resmod != nil {
		t.Error("r.ResponseModifier: got resmod, want nil")
	}

	r = &Result{
		reqmod: nil,
		resmod: tm,
	}
	if reqmod := r.RequestModifier(); reqmod != nil {
		t.Errorf("r.RequestModifier: got reqmod, want nil")
	}

	if resmod := r.ResponseModifier(); resmod == nil {
		t.Error("r.ResponseModifier: got nil, want resmod")
	}
}

func TestModifyRequest(t *testing.T) {
	m := NewModifier()
	m.SetRequestModifier(nil)

	req, err := http.NewRequest("CONNECT", "https://www.example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}

	ctx := session.FromContext(nil)
	martian.SetContext(req, ctx)
	defer martian.RemoveContext(req)

	if err := m.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}

	actx := auth.FromContext(ctx)

	if got, want := actx.ID(), ""; got != want {
		t.Errorf("actx.ID(): got %q, want %q", got, want)
	}

	// IP with port and modifier with error.
	tm := martiantest.NewModifier()
	reqerr := errors.New("request error")
	tm.RequestError(reqerr)

	req.RemoteAddr = "1.1.1.1:8111"
	m.SetRequestModifier(tm)

	if err := m.ModifyRequest(req); err != reqerr {
		t.Fatalf("ModifyConnectRequest(): got %v, want %v", err, reqerr)
	}

	if got, want := actx.ID(), "1.1.1.1"; got != want {
		t.Errorf("actx.ID(): got %q, want %q", got, want)
	}

	// IP without port and modifier with auth error.
	req.RemoteAddr = "4.4.4.4"

	autherr := errors.New("auth error")
	tm.RequestError(nil)
	tm.RequestFunc(func(req *http.Request) {
		ctx := martian.Context(req)
		actx := auth.FromContext(ctx)

		actx.SetError(autherr)
	})

	if err := m.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}

	if got, want := actx.ID(), ""; got != want {
		t.Errorf("actx.ID(): got %q, want %q", got, want)
	}
}

func TestPriorityGroupModifyResponse(t *testing.T) {
	var order []string

	pg := NewGroup()

	tm50 := martiantest.NewModifier()
	tm50.ResponseFunc(func(*http.Response) {
		order = append(order, "tm50")
	})
	pg.AddResponseModifier(tm50, 50)

	tm100a := martiantest.NewModifier()
	tm100a.ResponseFunc(func(*http.Response) {
		order = append(order, "tm100a")
	})
	pg.AddResponseModifier(tm100a, 100)

	tm100b := martiantest.NewModifier()
	tm100b.ResponseFunc(func(*http.Response) {
		order = append(order, "tm100b")
	})
	pg.AddResponseModifier(tm100b, 100)

	tm75 := martiantest.NewModifier()
	tm75.ResponseFunc(func(*http.Response) {
		order = append(order, "tm75")
	})

	if err := pg.RemoveResponseModifier(tm75); err != ErrModifierNotFound {
		t.Fatalf("RemoveResponseModifier(): got %v, want ErrModifierNotFound", err)
	}

	pg.AddResponseModifier(tm75, 100)

	if err := pg.RemoveResponseModifier(tm75); err != nil {
		t.Fatalf("RemoveResponseModifier(): got %v, want no error", err)
	}

	res := proxyutil.NewResponse(200, nil, nil)
	if err := pg.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}
	if got, want := order, []string{"tm100b", "tm100a", "tm50"}; !reflect.DeepEqual(got, want) {
		t.Fatalf("reflect.DeepEqual(%v, %v): got false, want true", got, want)
	}
}

func TestProxyAuth(t *testing.T) {
	m := NewModifier()
	tm := martiantest.NewModifier()
	m.SetRequestModifier(tm)
	m.SetResponseModifier(tm)

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}
	req.Header.Set("Proxy-Authorization", "Basic "+encode("user:pass"))

	ctx, err := session.FromContext(nil)
	if err != nil {
		t.Fatalf("session.FromContext(): got %v, want no error", err)
	}

	martian.SetContext(req, ctx)
	defer martian.RemoveContext(req)

	if err := m.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}

	actx := auth.FromContext(ctx)
	if got, want := actx.ID(), "user:pass"; got != want {
		t.Fatalf("actx.ID(): got %q, want %q", got, want)
	}

	if err := m.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}
	if !tm.RequestModified() {
		t.Error("tm.RequestModified(): got false, want true")
	}

	res := proxyutil.NewResponse(200, nil, req)

	if err := m.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}

	if err := m.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}

	if !tm.ResponseModified() {
		t.Error("tm.ResponseModified(): got false, want true")
	}

	if got, want := res.StatusCode, 200; got != want {
		t.Errorf("res.StatusCode: got %d, want %d", got, want)
	}
	if got, want := res.Header.Get("Proxy-Authenticate"), ""; got != want {
		t.Errorf("res.Header.Get(%q): got %q, want %q", "Proxy-Authenticate", got, want)
	}
}

func TestIntegrationHTTPDownstreamProxyError(t *testing.T) {
	t.Parallel()

	l, err := net.Listen("tcp", "[::1]:0")
	if err != nil {
		t.Fatalf("net.Listen(): got %v, want no error", err)
	}

	p := NewProxy()
	defer p.Close()

	// Set proxy's downstream proxy to invalid host:port to force failure.
	p.SetDownstreamProxy(&url.URL{
		Host: "[::1]:0",
	})
	p.SetTimeout(600 * time.Millisecond)

	tm := martiantest.NewModifier()
	reserr := errors.New("response error")
	tm.ResponseError(reserr)

	p.SetResponseModifier(tm)

	go p.Serve(l)

	// Open connection to upstream proxy.
	conn, err := net.Dial("tcp", l.Addr().String())
	if err != nil {
		t.Fatalf("net.Dial(): got %v, want no error", err)
	}
	defer conn.Close()

	req, err := http.NewRequest("CONNECT", "//example.com:443", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}

	// CONNECT example.com:443 HTTP/1.1
	// Host: example.com
	if err := req.Write(conn); err != nil {
		t.Fatalf("req.Write(): got %v, want no error", err)
	}

	// Response from upstream proxy, assuming downstream proxy failed to CONNECT.
	res, err := http.ReadResponse(bufio.NewReader(conn), req)
	if err != nil {
		t.Fatalf("http.ReadResponse(): got %v, want no error", err)
	}

	if got, want := res.StatusCode, 502; got != want {
		t.Fatalf("res.StatusCode: got %d, want %d", got, want)
	}
	if got, want := res.Header["Warning"][1], reserr.Error(); !strings.Contains(got, want) {
		t.Errorf("res.Header.get(%q): got %q, want to contain %q", "Warning", got, want)
	}
}

func TestModifyResponse(t *testing.T) {
	m := NewModifier()
	m.SetResponseModifier(nil)

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}

	ctx, err := session.FromContext(nil)
	if err != nil {
		t.Fatalf("session.FromContext(): got %v, want no error", err)
	}

	martian.SetContext(req, ctx)
	defer martian.RemoveContext(req)

	res := proxyutil.NewResponse(200, nil, req)
	if err := m.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}

	// Modifier with error.
	tm := martiantest.NewModifier()
	reserr := errors.New("response error")
	tm.ResponseError(reserr)

	m.SetResponseModifier(tm)
	if err := m.ModifyResponse(res); err != reserr {
		t.Fatalf("ModifyResponse(): got %v, want %v", err, reserr)
	}

	// Modifier with auth error.
	tm.ResponseError(nil)
	autherr := errors.New("auth error")
	tm.ResponseFunc(func(res *http.Response) {
		ctx := martian.Context(res.Request)
		actx := auth.FromContext(ctx)

		actx.SetError(autherr)
	})

	actx := auth.FromContext(ctx)
	actx.SetID("bad-auth")

	if err := m.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}
	if got, want := res.StatusCode, 403; got != want {
		t.Errorf("res.StatusCode: got %d, want %d", got, want)
	}

	if got, want := actx.Error(), autherr; got != want {
		t.Errorf("actx.Error(): got %v, want %v", got, want)
	}
}

func TestModifyResponse(t *testing.T) {
	f := NewFilter()

	tm := martiantest.NewModifier()
	f.SetResponseModifier("id", tm)

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}
	res := proxyutil.NewResponse(200, nil, req)

	// No ID, auth required.
	f.SetAuthRequired(true)

	ctx, remove, err := martian.TestContext(req)
	if err != nil {
		t.Fatalf("martian.TestContext(): got %v, want no error", err)
	}
	defer remove()

	if err := f.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}

	actx := FromContext(ctx)
	if actx.Error() == nil {
		t.Error("actx.Error(): got nil, want error")
	}
	if tm.ResponseModified() {
		t.Error("tm.RequestModified(): got true, want false")
	}

	// No ID, no auth required.
	f.SetAuthRequired(false)
	actx.SetError(nil)

	if err := f.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}
	if tm.ResponseModified() {
		t.Error("tm.ResponseModified(): got true, want false")
	}

	// Valid ID.
	actx.SetID("id")

	if err := f.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}
	if !tm.ResponseModified() {
		t.Error("tm.ResponseModified(): got false, want true")
	}
}

func TestIntegrationSkipRoundTrip(t *testing.T) {
	t.Parallel()

	l, err := net.Listen("tcp", "[::1]:0")
	if err != nil {
		t.Fatalf("net.Listen(): got %v, want no error", err)
	}

	p := NewProxy()
	defer p.Close()

	// Transport will be skipped, no 500.
	tr := martiantest.NewTransport()
	tr.Respond(500)
	p.SetRoundTripper(tr)
	p.SetTimeout(200 * time.Millisecond)

	tm := martiantest.NewModifier()
	tm.RequestFunc(func(req *http.Request) {
		ctx := Context(req)
		ctx.SkipRoundTrip()
	})
	p.SetRequestModifier(tm)

	go p.Serve(l)

	conn, err := net.Dial("tcp", l.Addr().String())
	if err != nil {
		t.Fatalf("net.Dial(): got %v, want no error", err)
	}
	defer conn.Close()

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}

	// GET http://example.com/ HTTP/1.1
	// Host: example.com
	if err := req.WriteProxy(conn); err != nil {
		t.Fatalf("req.WriteProxy(): got %v, want no error", err)
	}

	// Response from skipped round trip.
	res, err := http.ReadResponse(bufio.NewReader(conn), req)
	if err != nil {
		t.Fatalf("http.ReadResponse(): got %v, want no error", err)
	}
	defer res.Body.Close()

	if got, want := res.StatusCode, 200; got != want {
		t.Errorf("res.StatusCode: got %d, want %d", got, want)
	}
}

func TestModifyResponseHaltsOnError(t *testing.T) {
	fg := NewGroup()

	reserr := errors.New("request error")
	tm := martiantest.NewModifier()
	tm.ResponseError(reserr)
	fg.AddResponseModifier(tm)

	tm2 := martiantest.NewModifier()
	fg.AddResponseModifier(tm2)

	res := proxyutil.NewResponse(200, nil, nil)
	if err := fg.ModifyResponse(res); err != reserr {
		t.Fatalf("fg.ModifyResponse(): got %v, want %v", err, reserr)
	}

	if tm2.ResponseModified() {
		t.Error("tm2.ResponseModified(): got true, want false")
	}
}

func TestIntegrationTransparentHTTP(t *testing.T) {
	t.Parallel()

	l, err := net.Listen("tcp", "[::1]:0")
	if err != nil {
		t.Fatalf("net.Listen(): got %v, want no error", err)
	}

	p := NewProxy()
	defer p.Close()

	tr := martiantest.NewTransport()
	p.SetRoundTripper(tr)
	p.SetTimeout(200 * time.Millisecond)

	tm := martiantest.NewModifier()
	p.SetRequestModifier(tm)
	p.SetResponseModifier(tm)

	go p.Serve(l)

	conn, err := net.Dial("tcp", l.Addr().String())
	if err != nil {
		t.Fatalf("net.Dial(): got %v, want no error", err)
	}
	defer conn.Close()

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}

	// GET / HTTP/1.1
	// Host: www.example.com
	if err := req.Write(conn); err != nil {
		t.Fatalf("req.Write(): got %v, want no error", err)
	}

	res, err := http.ReadResponse(bufio.NewReader(conn), req)
	if err != nil {
		t.Fatalf("http.ReadResponse(): got %v, want no error", err)
	}

	if got, want := res.StatusCode, 200; got != want {
		t.Fatalf("res.StatusCode: got %d, want %d", got, want)
	}

	if !tm.RequestModified() {
		t.Error("tm.RequestModified(): got false, want true")
	}
	if !tm.ResponseModified() {
		t.Error("tm.ResponseModified(): got false, want true")
	}
}

func TestPriorityGroupModifyResponseHaltsOnError(t *testing.T) {
	pg := NewGroup()

	reserr := errors.New("response error")
	tm := martiantest.NewModifier()
	tm.ResponseError(reserr)

	pg.AddResponseModifier(tm, 100)

	tm2 := martiantest.NewModifier()
	pg.AddResponseModifier(tm2, 75)

	res := proxyutil.NewResponse(200, nil, nil)
	if err := pg.ModifyResponse(res); err != reserr {
		t.Fatalf("ModifyRequest(): got %v, want %v", err, reserr)
	}

	if tm2.ResponseModified() {
		t.Error("tm2.ResponseModified(): got true, want false")
	}
}

func TestNewStack(t *testing.T) {
	stack, fg := NewStack("martian")

	tm := martiantest.NewModifier()
	fg.AddRequestModifier(tm)
	fg.AddResponseModifier(tm)

	req, err := http.NewRequest("GET", "http://example.com", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}

	_, remove, err := martian.TestContext(req)
	if err != nil {
		t.Fatalf("martian.TestContext(): got %v, want no error", err)
	}
	defer remove()

	// Hop-by-hop header to be removed.
	req.Header.Set("Hop-By-Hop", "true")
	req.Header.Set("Connection", "Hop-By-Hop")

	req.RemoteAddr = "10.0.0.1:5000"

	if err := stack.ModifyRequest(req); err != nil {
		t.Fatalf("ModifyRequest(): got %v, want no error", err)
	}

	if got, want := req.Header.Get("Hop-By-Hop"), ""; got != want {
		t.Errorf("req.Header.Get(%q): got %q, want %q", "Hop-By-Hop", got, want)
	}
	if got, want := req.Header.Get("X-Forwarded-For"), "10.0.0.1"; got != want {
		t.Errorf("req.Header.Get(%q): got %q, want %q", "X-Forwarded-For", got, want)
	}
	if got, want := req.Header.Get("Via"), "1.1 martian"; got != want {
		t.Errorf("req.Header.Get(%q): got %q, want %q", "Via", got, want)
	}

	res := proxyutil.NewResponse(200, nil, req)

	// Hop-by-hop header to be removed.
	res.Header.Set("Hop-By-Hop", "true")
	res.Header.Set("Connection", "Hop-By-Hop")

	if err := stack.ModifyResponse(res); err != nil {
		t.Fatalf("ModifyResponse(): got %v, want no error", err)
	}

	if got, want := res.Header.Get("Hop-By-Hop"), ""; got != want {
		t.Errorf("res.Header.Get(%q): got %q, want %q", "Hop-By-Hop", got, want)
	}
}

func TestModifyRequestHaltsOnError(t *testing.T) {
	fg := NewGroup()

	reqerr := errors.New("request error")
	tm := martiantest.NewModifier()
	tm.RequestError(reqerr)
	fg.AddRequestModifier(tm)

	tm2 := martiantest.NewModifier()
	fg.AddRequestModifier(tm2)

	req, err := http.NewRequest("GET", "http://example.com/", nil)
	if err != nil {
		t.Fatalf("http.NewRequest(): got %v, want no error", err)
	}
	if err := fg.ModifyRequest(req); err != reqerr {
		t.Fatalf("fg.ModifyRequest(): got %v, want %v", err, reqerr)
	}

	if tm2.RequestModified() {
		t.Error("tm2.RequestModified(): got true, want false")
	}
}