traefik/pkg/middlewares/gatewayapi/headermodifier/response_header_modifier_test.go

122 lines
3.4 KiB
Go
Raw Normal View History

2024-08-12 09:34:04 +00:00
package headermodifier
import (
"context"
"net/http"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/assert"
"github.com/traefik/traefik/v3/pkg/config/dynamic"
"github.com/traefik/traefik/v3/pkg/testhelpers"
)
func TestResponseHeaderModifier(t *testing.T) {
testCases := []struct {
desc string
config dynamic.HeaderModifier
responseHeaders http.Header
expectedHeaders http.Header
}{
{
desc: "no config",
config: dynamic.HeaderModifier{},
expectedHeaders: map[string][]string{},
},
{
desc: "set header",
config: dynamic.HeaderModifier{
Set: map[string]string{"Foo": "Bar"},
},
expectedHeaders: map[string][]string{"Foo": {"Bar"}},
},
{
desc: "set header with existing headers",
config: dynamic.HeaderModifier{
Set: map[string]string{"Foo": "Bar"},
},
responseHeaders: map[string][]string{"Foo": {"Baz"}, "Bar": {"Foo"}},
expectedHeaders: map[string][]string{"Foo": {"Bar"}, "Bar": {"Foo"}},
},
{
desc: "set multiple headers with existing headers",
config: dynamic.HeaderModifier{
Set: map[string]string{"Foo": "Bar", "Bar": "Foo"},
},
responseHeaders: map[string][]string{"Foo": {"Baz"}, "Bar": {"Foobar"}},
expectedHeaders: map[string][]string{"Foo": {"Bar"}, "Bar": {"Foo"}},
},
{
desc: "add header",
config: dynamic.HeaderModifier{
Add: map[string]string{"Foo": "Bar"},
},
expectedHeaders: map[string][]string{"Foo": {"Bar"}},
},
{
desc: "add header with existing headers",
config: dynamic.HeaderModifier{
Add: map[string]string{"Foo": "Bar"},
},
responseHeaders: map[string][]string{"Foo": {"Baz"}, "Bar": {"Foo"}},
expectedHeaders: map[string][]string{"Foo": {"Baz", "Bar"}, "Bar": {"Foo"}},
},
{
desc: "add multiple headers with existing headers",
config: dynamic.HeaderModifier{
Add: map[string]string{"Foo": "Bar", "Bar": "Foo"},
},
responseHeaders: map[string][]string{"Foo": {"Baz"}, "Bar": {"Foobar"}},
expectedHeaders: map[string][]string{"Foo": {"Baz", "Bar"}, "Bar": {"Foobar", "Foo"}},
},
{
desc: "remove header",
config: dynamic.HeaderModifier{
Remove: []string{"Foo"},
},
expectedHeaders: map[string][]string{},
},
{
desc: "remove header with existing headers",
config: dynamic.HeaderModifier{
Remove: []string{"Foo"},
},
responseHeaders: map[string][]string{"Foo": {"Baz"}, "Bar": {"Foo"}},
expectedHeaders: map[string][]string{"Bar": {"Foo"}},
},
{
desc: "remove multiple headers with existing headers",
config: dynamic.HeaderModifier{
Remove: []string{"Foo", "Bar"},
},
responseHeaders: map[string][]string{"Foo": {"Bar"}, "Bar": {"Foo"}, "Baz": {"Bar"}},
expectedHeaders: map[string][]string{"Baz": {"Bar"}},
},
}
for _, test := range testCases {
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
var nextCallCount int
next := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
nextCallCount++
rw.WriteHeader(http.StatusOK)
})
handler := NewResponseHeaderModifier(context.Background(), next, test.config, "foo-response-header-modifier")
req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost", nil)
resp := httptest.NewRecorder()
for k, v := range test.responseHeaders {
resp.Header()[k] = v
}
handler.ServeHTTP(resp, req)
assert.Equal(t, 1, nextCallCount)
assert.Equal(t, test.expectedHeaders, resp.Header())
})
}
}