traefik/middlewares/customerrors/custom_errors_test.go
Julien Salleyron 4a68d29ce2 Add a new protocol
Co-authored-by: Gérald Croës <gerald@containo.us>
2019-03-14 09:30:04 +01:00

176 lines
5.7 KiB
Go

package customerrors
import (
"context"
"fmt"
"net/http"
"net/http/httptest"
"testing"
"github.com/containous/traefik/config"
"github.com/containous/traefik/middlewares"
"github.com/containous/traefik/testhelpers"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestHandler(t *testing.T) {
testCases := []struct {
desc string
errorPage *config.ErrorPage
backendCode int
backendErrorHandler http.HandlerFunc
validate func(t *testing.T, recorder *httptest.ResponseRecorder)
}{
{
desc: "no error",
errorPage: &config.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) {
assert.Equal(t, http.StatusOK, recorder.Code, "HTTP status")
assert.Contains(t, recorder.Body.String(), http.StatusText(http.StatusOK))
},
},
{
desc: "in the range",
errorPage: &config.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) {
assert.Equal(t, http.StatusInternalServerError, recorder.Code, "HTTP status")
assert.Contains(t, recorder.Body.String(), "My error page.")
assert.NotContains(t, recorder.Body.String(), "oops", "Should not return the oops page")
},
},
{
desc: "not in the range",
errorPage: &config.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) {
assert.Equal(t, http.StatusBadGateway, recorder.Code, "HTTP status")
assert.Contains(t, recorder.Body.String(), http.StatusText(http.StatusBadGateway))
assert.NotContains(t, recorder.Body.String(), "Test Server", "Should return the oops page since we have not configured the 502 code")
},
},
{
desc: "query replacement",
errorPage: &config.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" {
fmt.Fprintln(w, "My 503 page.")
} else {
fmt.Fprintln(w, "Failed")
}
}),
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
assert.Contains(t, recorder.Body.String(), "My 503 page.")
assert.NotContains(t, recorder.Body.String(), "oops", "Should not return the oops page")
},
},
{
desc: "Single code",
errorPage: &config.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" {
fmt.Fprintln(w, "My 503 page.")
} else {
fmt.Fprintln(w, "Failed")
}
}),
validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
assert.Contains(t, recorder.Body.String(), "My 503 page.")
assert.NotContains(t, recorder.Body.String(), "oops", "Should not return the oops 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)
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", nil)
recorder := httptest.NewRecorder()
errorPageHandler.ServeHTTP(recorder, req)
test.validate(t, recorder)
})
}
}
type mockServiceBuilder struct {
handler http.Handler
}
func (m *mockServiceBuilder) BuildHTTP(_ context.Context, serviceName string, responseModifier func(*http.Response) error) (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: &responseRecorderWithoutCloseNotify{},
},
{
desc: "With Close Notify",
rw: &mockRWCloseNotify{},
expected: &responseRecorderWithCloseNotify{},
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
rec := newResponseRecorder(test.rw, middlewares.GetLogger(context.Background(), "test", typeName))
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")
}