// 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 header import ( "fmt" "log" "net/http" "net/http/httptest" "os" "reflect" "sort" "testing" "github.com/caddyserver/caddy/caddyhttp/httpserver" ) func TestHeader(t *testing.T) { hostname, err := os.Hostname() if err != nil { t.Fatalf("Could not determine hostname: %v", err) } for i, test := range []struct { from string name string value string }{ {"/a", "Foo", "Bar"}, {"/a", "Bar", ""}, {"/a", "Baz", ""}, {"/a", "Server", ""}, {"/a", "ServerName", hostname}, {"/b", "Foo", ""}, {"/b", "Bar", "Removed in /a"}, } { he := Headers{ Next: httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) { w.Header().Set("Bar", "Removed in /a") w.WriteHeader(http.StatusOK) return 0, nil }), Rules: []Rule{ {Path: "/a", Headers: http.Header{ "Foo": []string{"Bar"}, "ServerName": []string{"{hostname}"}, "-Bar": []string{""}, "-Server": []string{}, }}, }, } req, err := http.NewRequest("GET", test.from, nil) if err != nil { t.Fatalf("Test %d: Could not create HTTP request: %v", i, err) } rec := httptest.NewRecorder() // preset header rec.Header().Set("Server", "Caddy") if _, err := he.ServeHTTP(rec, req); err != nil { log.Println("[ERROR] ServeHTTP failed: ", err) } if got := rec.Header().Get(test.name); got != test.value { t.Errorf("Test %d: Expected %s header to be %q but was %q", i, test.name, test.value, got) } } } func TestMultipleHeaders(t *testing.T) { he := Headers{ Next: httpserver.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) { if _, err := fmt.Fprint(w, "This is a test"); err != nil { log.Println("[ERROR] Fprint failed: ", err) } return 0, nil }), Rules: []Rule{ {Path: "/a", Headers: http.Header{ "+Link": []string{"; rel=preload", "; rel=preload"}, }}, }, } req, err := http.NewRequest("GET", "/a", nil) if err != nil { t.Fatalf("Could not create HTTP request: %v", err) } rec := httptest.NewRecorder() if _, err := he.ServeHTTP(rec, req); err != nil { log.Println("[ERROR] ServeHTTP failed: ", err) } desiredHeaders := []string{"; rel=preload", "; rel=preload"} actualHeaders := rec.HeaderMap[http.CanonicalHeaderKey("Link")] sort.Strings(actualHeaders) if !reflect.DeepEqual(desiredHeaders, actualHeaders) { t.Errorf("Expected header to contain: %v but got: %v", desiredHeaders, actualHeaders) } }