Subversion Repositories openrisc

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Reverse proxy tests.

package httputil

import (
        "io/ioutil"
        "net/http"
        "net/http/httptest"
        "net/url"
        "testing"
)

func TestReverseProxy(t *testing.T) {
        const backendResponse = "I am the backend"
        const backendStatus = 404
        backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
                if len(r.TransferEncoding) > 0 {
                        t.Errorf("backend got unexpected TransferEncoding: %v", r.TransferEncoding)
                }
                if r.Header.Get("X-Forwarded-For") == "" {
                        t.Errorf("didn't get X-Forwarded-For header")
                }
                if c := r.Header.Get("Connection"); c != "" {
                        t.Errorf("handler got Connection header value %q", c)
                }
                if g, e := r.Host, "some-name"; g != e {
                        t.Errorf("backend got Host header %q, want %q", g, e)
                }
                w.Header().Set("X-Foo", "bar")
                http.SetCookie(w, &http.Cookie{Name: "flavor", Value: "chocolateChip"})
                w.WriteHeader(backendStatus)
                w.Write([]byte(backendResponse))
        }))
        defer backend.Close()
        backendURL, err := url.Parse(backend.URL)
        if err != nil {
                t.Fatal(err)
        }
        proxyHandler := NewSingleHostReverseProxy(backendURL)
        frontend := httptest.NewServer(proxyHandler)
        defer frontend.Close()

        getReq, _ := http.NewRequest("GET", frontend.URL, nil)
        getReq.Host = "some-name"
        getReq.Header.Set("Connection", "close")
        getReq.Close = true
        res, err := http.DefaultClient.Do(getReq)
        if err != nil {
                t.Fatalf("Get: %v", err)
        }
        if g, e := res.StatusCode, backendStatus; g != e {
                t.Errorf("got res.StatusCode %d; expected %d", g, e)
        }
        if g, e := res.Header.Get("X-Foo"), "bar"; g != e {
                t.Errorf("got X-Foo %q; expected %q", g, e)
        }
        if g, e := len(res.Header["Set-Cookie"]), 1; g != e {
                t.Fatalf("got %d SetCookies, want %d", g, e)
        }
        if cookie := res.Cookies()[0]; cookie.Name != "flavor" {
                t.Errorf("unexpected cookie %q", cookie.Name)
        }
        bodyBytes, _ := ioutil.ReadAll(res.Body)
        if g, e := string(bodyBytes), backendResponse; g != e {
                t.Errorf("got body %q; expected %q", g, e)
        }
}

var proxyQueryTests = []struct {
        baseSuffix string // suffix to add to backend URL
        reqSuffix  string // suffix to add to frontend's request URL
        want       string // what backend should see for final request URL (without ?)
}{
        {"", "", ""},
        {"?sta=tic", "?us=er", "sta=tic&us=er"},
        {"", "?us=er", "us=er"},
        {"?sta=tic", "", "sta=tic"},
}

func TestReverseProxyQuery(t *testing.T) {
        backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
                w.Header().Set("X-Got-Query", r.URL.RawQuery)
                w.Write([]byte("hi"))
        }))
        defer backend.Close()

        for i, tt := range proxyQueryTests {
                backendURL, err := url.Parse(backend.URL + tt.baseSuffix)
                if err != nil {
                        t.Fatal(err)
                }
                frontend := httptest.NewServer(NewSingleHostReverseProxy(backendURL))
                req, _ := http.NewRequest("GET", frontend.URL+tt.reqSuffix, nil)
                req.Close = true
                res, err := http.DefaultClient.Do(req)
                if err != nil {
                        t.Fatalf("%d. Get: %v", i, err)
                }
                if g, e := res.Header.Get("X-Got-Query"), tt.want; g != e {
                        t.Errorf("%d. got query %q; expected %q", i, g, e)
                }
                res.Body.Close()
                frontend.Close()
        }
}