60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package middleware
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import (
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"compress/gzip"
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"io"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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)
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func TestGzip_SkipsWhenNotAccepted(t *testing.T) {
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handler := Gzip(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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_, _ = w.Write([]byte("plain"))
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}))
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req := httptest.NewRequest(http.MethodGet, "/", nil)
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rec := httptest.NewRecorder()
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handler.ServeHTTP(rec, req)
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if got := rec.Header().Get("Content-Encoding"); got != "" {
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t.Errorf("expected no content encoding, got %q", got)
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}
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if rec.Body.String() != "plain" {
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t.Errorf("expected plain response, got %q", rec.Body.String())
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}
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}
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func TestGzip_CompressesWhenAccepted(t *testing.T) {
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handler := Gzip(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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_, _ = w.Write([]byte("compressed"))
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}))
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req := httptest.NewRequest(http.MethodGet, "/", nil)
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req.Header.Set("Accept-Encoding", "gzip")
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rec := httptest.NewRecorder()
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handler.ServeHTTP(rec, req)
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if got := rec.Header().Get("Content-Encoding"); got != "gzip" {
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t.Fatalf("expected gzip encoding, got %q", got)
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}
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if got := rec.Header().Get("Vary"); !strings.Contains(got, "Accept-Encoding") {
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t.Fatalf("expected Vary to include Accept-Encoding, got %q", got)
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}
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reader, err := gzip.NewReader(rec.Body)
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if err != nil {
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t.Fatalf("failed to create gzip reader: %v", err)
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}
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defer reader.Close()
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data, err := io.ReadAll(reader)
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if err != nil {
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t.Fatalf("failed to read gzip body: %v", err)
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}
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if string(data) != "compressed" {
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t.Errorf("expected decompressed body 'compressed', got %q", string(data))
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}
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}
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