81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package contenttype
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import (
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"context"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
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"github.com/traefik/traefik/v3/pkg/testhelpers"
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)
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func TestAutoDetection(t *testing.T) {
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testCases := []struct {
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desc string
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autoDetect bool
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contentType string
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wantContentType string
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}{
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{
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desc: "Keep the Content-Type returned by the server",
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autoDetect: false,
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contentType: "application/json",
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wantContentType: "application/json",
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},
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{
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desc: "Don't auto-detect Content-Type header by default when not set by the server",
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autoDetect: false,
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contentType: "",
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wantContentType: "",
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},
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{
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desc: "Keep the Content-Type returned by the server with auto-detection middleware",
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autoDetect: true,
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contentType: "application/json",
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wantContentType: "application/json",
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},
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{
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desc: "Auto-detect when Content-Type header is not already set by the server with auto-detection middleware",
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autoDetect: true,
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contentType: "",
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wantContentType: "text/plain; charset=utf-8",
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},
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}
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for _, test := range testCases {
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test := test
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t.Run(test.desc, func(t *testing.T) {
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t.Parallel()
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var next http.Handler
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next = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if test.contentType != "" {
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w.Header().Set("Content-Type", test.contentType)
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}
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte("Test"))
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})
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if test.autoDetect {
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var err error
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next, err = New(context.Background(), next, dynamic.ContentType{}, "foo-content-type")
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require.NoError(t, err)
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}
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server := httptest.NewServer(
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DisableAutoDetection(next),
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)
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t.Cleanup(server.Close)
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req := testhelpers.MustNewRequest(http.MethodGet, server.URL, nil)
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res, err := server.Client().Do(req)
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require.NoError(t, err)
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assert.Equal(t, test.wantContentType, res.Header.Get("Content-Type"))
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})
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}
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}
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