TUN-528: Move cloudflared into a separate repo

vendor/github.com/mholt/caddy/caddyhttp/gzip/gzip_test.go

@@ -0,0 +1,196 @@
+// Copyright 2015 Light Code Labs, LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package gzip
+
+import (
+	"compress/gzip"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/mholt/caddy/caddyhttp/httpserver"
+)
+
+func TestGzipHandler(t *testing.T) {
+	pathFilter := PathFilter{make(Set)}
+	badPaths := []string{"/bad", "/nogzip", "/nongzip"}
+	for _, p := range badPaths {
+		pathFilter.IgnoredPaths.Add(p)
+	}
+	extFilter := ExtFilter{make(Set)}
+	for _, e := range []string{".txt", ".html", ".css", ".md"} {
+		extFilter.Exts.Add(e)
+	}
+	gz := Gzip{Configs: []Config{
+		{RequestFilters: []RequestFilter{pathFilter, extFilter}},
+	}}
+
+	w := httptest.NewRecorder()
+	gz.Next = nextFunc(true)
+	var exts = []string{
+		".html", ".css", ".md",
+	}
+	for _, e := range exts {
+		url := "/file" + e
+		r, err := http.NewRequest("GET", url, nil)
+		if err != nil {
+			t.Error(err)
+		}
+		r.Header.Set("Accept-Encoding", "gzip")
+		w.Header().Set("ETag", `"2n9cd"`)
+		_, err = gz.ServeHTTP(w, r)
+		if err != nil {
+			t.Error(err)
+		}
+
+		// The second pass, test if the ETag is already weak
+		w.Header().Set("ETag", `W/"2n9cd"`)
+		_, err = gz.ServeHTTP(w, r)
+		if err != nil {
+			t.Error(err)
+		}
+	}
+
+	w = httptest.NewRecorder()
+	gz.Next = nextFunc(false)
+	for _, p := range badPaths {
+		for _, e := range exts {
+			url := p + "/file" + e
+			r, err := http.NewRequest("GET", url, nil)
+			if err != nil {
+				t.Error(err)
+			}
+			r.Header.Set("Accept-Encoding", "gzip")
+			_, err = gz.ServeHTTP(w, r)
+			if err != nil {
+				t.Error(err)
+			}
+		}
+	}
+
+	w = httptest.NewRecorder()
+	gz.Next = nextFunc(false)
+	exts = []string{
+		".htm1", ".abc", ".mdx",
+	}
+	for _, e := range exts {
+		url := "/file" + e
+		r, err := http.NewRequest("GET", url, nil)
+		if err != nil {
+			t.Error(err)
+		}
+		r.Header.Set("Accept-Encoding", "gzip")
+		_, err = gz.ServeHTTP(w, r)
+		if err != nil {
+			t.Error(err)
+		}
+	}
+
+	// test all levels
+	w = httptest.NewRecorder()
+	gz.Next = nextFunc(true)
+	for i := 0; i <= gzip.BestCompression; i++ {
+		gz.Configs[0].Level = i
+		r, err := http.NewRequest("GET", "/file.txt", nil)
+		if err != nil {
+			t.Error(err)
+		}
+		r.Header.Set("Accept-Encoding", "gzip")
+		_, err = gz.ServeHTTP(w, r)
+		if err != nil {
+			t.Error(err)
+		}
+	}
+}
+
+func nextFunc(shouldGzip bool) httpserver.Handler {
+	return httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
+		// write a relatively large text file
+		b, err := ioutil.ReadFile("testdata/test.txt")
+		if err != nil {
+			return 500, err
+		}
+		if _, err := w.Write(b); err != nil {
+			return 500, err
+		}
+
+		if shouldGzip {
+			if w.Header().Get("Content-Encoding") != "gzip" {
+				return 0, fmt.Errorf("Content-Encoding must be gzip, found %v", w.Header().Get("Content-Encoding"))
+			}
+			if w.Header().Get("Vary") != "Accept-Encoding" {
+				return 0, fmt.Errorf("Vary must be Accept-Encoding, found %v", w.Header().Get("Vary"))
+			}
+			etag := w.Header().Get("ETag")
+			if etag != "" && etag != `W/"2n9cd"` {
+				return 0, fmt.Errorf("ETag must be converted to weak Etag, found %v", w.Header().Get("ETag"))
+			}
+			if _, ok := w.(*gzipResponseWriter); !ok {
+				return 0, fmt.Errorf("ResponseWriter should be gzipResponseWriter, found %T", w)
+			}
+			if strings.Contains(w.Header().Get("Content-Type"), "application/x-gzip") {
+				return 0, fmt.Errorf("Content-Type should not be gzip")
+			}
+			return 0, nil
+		}
+		if r.Header.Get("Accept-Encoding") == "" {
+			return 0, fmt.Errorf("Accept-Encoding header expected")
+		}
+		if w.Header().Get("Content-Encoding") == "gzip" {
+			return 0, fmt.Errorf("Content-Encoding must not be gzip, found gzip")
+		}
+		if _, ok := w.(*gzipResponseWriter); ok {
+			return 0, fmt.Errorf("ResponseWriter should not be gzipResponseWriter")
+		}
+		return 0, nil
+	})
+}
+
+func BenchmarkGzip(b *testing.B) {
+	pathFilter := PathFilter{make(Set)}
+	badPaths := []string{"/bad", "/nogzip", "/nongzip"}
+	for _, p := range badPaths {
+		pathFilter.IgnoredPaths.Add(p)
+	}
+	extFilter := ExtFilter{make(Set)}
+	for _, e := range []string{".txt", ".html", ".css", ".md"} {
+		extFilter.Exts.Add(e)
+	}
+	gz := Gzip{Configs: []Config{
+		{
+			RequestFilters: []RequestFilter{pathFilter, extFilter},
+		},
+	}}
+
+	w := httptest.NewRecorder()
+	gz.Next = nextFunc(true)
+	url := "/file.txt"
+	r, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	r.Header.Set("Accept-Encoding", "gzip")
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_, err = gz.ServeHTTP(w, r)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}