237 lines
7.7 KiB
Go
237 lines
7.7 KiB
Go
package customerrors
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net/http"
|
|
"net/http/httptest"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
"github.com/traefik/traefik/v2/pkg/config/dynamic"
|
|
"github.com/traefik/traefik/v2/pkg/testhelpers"
|
|
)
|
|
|
|
func TestHandler(t *testing.T) {
|
|
testCases := []struct {
|
|
desc string
|
|
errorPage *dynamic.ErrorPage
|
|
backendCode int
|
|
backendErrorHandler http.HandlerFunc
|
|
validate func(t *testing.T, recorder *httptest.ResponseRecorder)
|
|
}{
|
|
{
|
|
desc: "no error",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/test", Status: []string{"500-501", "503-599"}},
|
|
backendCode: http.StatusOK,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
_, _ = fmt.Fprintln(w, "My error page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusOK, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), http.StatusText(http.StatusOK))
|
|
},
|
|
},
|
|
{
|
|
desc: "no error, but not a 200",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/test", Status: []string{"500-501", "503-599"}},
|
|
backendCode: http.StatusPartialContent,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
_, _ = fmt.Fprintln(w, "My error page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusPartialContent, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), http.StatusText(http.StatusPartialContent))
|
|
},
|
|
},
|
|
{
|
|
desc: "a 304, so no Write called",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/test", Status: []string{"500-501", "503-599"}},
|
|
backendCode: http.StatusNotModified,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
_, _ = fmt.Fprintln(w, "whatever, should not be called")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusNotModified, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), "")
|
|
},
|
|
},
|
|
{
|
|
desc: "in the range",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/test", Status: []string{"500-501", "503-599"}},
|
|
backendCode: http.StatusInternalServerError,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
_, _ = fmt.Fprintln(w, "My error page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusInternalServerError, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), "My error page.")
|
|
},
|
|
},
|
|
{
|
|
desc: "not in the range",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/test", Status: []string{"500-501", "503-599"}},
|
|
backendCode: http.StatusBadGateway,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
_, _ = fmt.Fprintln(w, "My error page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusBadGateway, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), http.StatusText(http.StatusBadGateway))
|
|
},
|
|
},
|
|
{
|
|
desc: "query replacement",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/{status}", Status: []string{"503-503"}},
|
|
backendCode: http.StatusServiceUnavailable,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
if r.RequestURI != "/503" {
|
|
return
|
|
}
|
|
|
|
_, _ = fmt.Fprintln(w, "My 503 page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), "My 503 page.")
|
|
},
|
|
},
|
|
{
|
|
desc: "single code and query replacement",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/{status}", Status: []string{"503"}},
|
|
backendCode: http.StatusServiceUnavailable,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
if r.RequestURI != "/503" {
|
|
return
|
|
}
|
|
|
|
_, _ = fmt.Fprintln(w, "My 503 page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), "My 503 page.")
|
|
},
|
|
},
|
|
{
|
|
desc: "forward request host header",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/test", Status: []string{"503"}},
|
|
backendCode: http.StatusServiceUnavailable,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
_, _ = fmt.Fprintln(w, r.Host)
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), "localhost")
|
|
},
|
|
},
|
|
{
|
|
desc: "full query replacement",
|
|
errorPage: &dynamic.ErrorPage{Service: "error", Query: "/?status={status}&url={url}", Status: []string{"503"}},
|
|
backendCode: http.StatusServiceUnavailable,
|
|
backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
if r.RequestURI != "/?status=503&url=http%3A%2F%2Flocalhost%2Ftest%3Ffoo%3Dbar%26baz%3Dbuz" {
|
|
t.Log(r.RequestURI)
|
|
return
|
|
}
|
|
|
|
_, _ = fmt.Fprintln(w, "My 503 page.")
|
|
}),
|
|
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
|
|
t.Helper()
|
|
assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
|
|
assert.Contains(t, recorder.Body.String(), "My 503 page.")
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, test := range testCases {
|
|
test := test
|
|
t.Run(test.desc, func(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
serviceBuilderMock := &mockServiceBuilder{handler: test.backendErrorHandler}
|
|
|
|
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
w.WriteHeader(test.backendCode)
|
|
|
|
if test.backendCode == http.StatusNotModified {
|
|
return
|
|
}
|
|
_, _ = fmt.Fprintln(w, http.StatusText(test.backendCode))
|
|
})
|
|
errorPageHandler, err := New(context.Background(), handler, *test.errorPage, serviceBuilderMock, "test")
|
|
require.NoError(t, err)
|
|
|
|
req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost/test?foo=bar&baz=buz", nil)
|
|
|
|
recorder := httptest.NewRecorder()
|
|
errorPageHandler.ServeHTTP(recorder, req)
|
|
|
|
test.validate(t, recorder)
|
|
})
|
|
}
|
|
}
|
|
|
|
type mockServiceBuilder struct {
|
|
handler http.Handler
|
|
}
|
|
|
|
func (m *mockServiceBuilder) BuildHTTP(_ context.Context, _ string) (http.Handler, error) {
|
|
return m.handler, nil
|
|
}
|
|
|
|
func TestNewResponseRecorder(t *testing.T) {
|
|
testCases := []struct {
|
|
desc string
|
|
rw http.ResponseWriter
|
|
expected http.ResponseWriter
|
|
}{
|
|
{
|
|
desc: "Without Close Notify",
|
|
rw: httptest.NewRecorder(),
|
|
expected: &codeModifierWithoutCloseNotify{},
|
|
},
|
|
{
|
|
desc: "With Close Notify",
|
|
rw: &mockRWCloseNotify{},
|
|
expected: &codeModifierWithCloseNotify{},
|
|
},
|
|
}
|
|
|
|
for _, test := range testCases {
|
|
test := test
|
|
t.Run(test.desc, func(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
rec := newCodeModifier(test.rw, 0)
|
|
assert.IsType(t, rec, test.expected)
|
|
})
|
|
}
|
|
}
|
|
|
|
type mockRWCloseNotify struct{}
|
|
|
|
func (m *mockRWCloseNotify) CloseNotify() <-chan bool {
|
|
panic("implement me")
|
|
}
|
|
|
|
func (m *mockRWCloseNotify) Header() http.Header {
|
|
panic("implement me")
|
|
}
|
|
|
|
func (m *mockRWCloseNotify) Write([]byte) (int, error) {
|
|
panic("implement me")
|
|
}
|
|
|
|
func (m *mockRWCloseNotify) WriteHeader(int) {
|
|
panic("implement me")
|
|
}
|