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path: root/swarm/api/http/response_test.go
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// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package http

import (
    "encoding/json"
    "io/ioutil"
    "net/http"
    "strings"
    "testing"

    "golang.org/x/net/html"

    "github.com/ethereum/go-ethereum/swarm/testutil"
)

func TestError(t *testing.T) {
    srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
    defer srv.Close()

    var resp *http.Response
    var respbody []byte

    url := srv.URL + "/this_should_fail_as_no_bzz_protocol_present"
    resp, err := http.Get(url)

    if err != nil {
        t.Fatalf("Request failed: %v", err)
    }
    defer resp.Body.Close()
    respbody, err = ioutil.ReadAll(resp.Body)

    if resp.StatusCode != 404 && !strings.Contains(string(respbody), "Invalid URI &#34;/this_should_fail_as_no_bzz_protocol_present&#34;: unknown scheme") {
        t.Fatalf("Response body does not match, expected: %v, to contain: %v; received code %d, expected code: %d", string(respbody), "Invalid bzz URI: unknown scheme", 400, resp.StatusCode)
    }

    _, err = html.Parse(strings.NewReader(string(respbody)))
    if err != nil {
        t.Fatalf("HTML validation failed for error page returned!")
    }
}

func Test404Page(t *testing.T) {
    srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
    defer srv.Close()

    var resp *http.Response
    var respbody []byte

    url := srv.URL + "/bzz:/1234567890123456789012345678901234567890123456789012345678901234"
    resp, err := http.Get(url)

    if err != nil {
        t.Fatalf("Request failed: %v", err)
    }
    defer resp.Body.Close()
    respbody, err = ioutil.ReadAll(resp.Body)

    if resp.StatusCode != 404 || !strings.Contains(string(respbody), "404") {
        t.Fatalf("Invalid Status Code received, expected 404, got %d", resp.StatusCode)
    }

    _, err = html.Parse(strings.NewReader(string(respbody)))
    if err != nil {
        t.Fatalf("HTML validation failed for error page returned!")
    }
}

func Test500Page(t *testing.T) {
    srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
    defer srv.Close()

    var resp *http.Response
    var respbody []byte

    url := srv.URL + "/bzz:/thisShouldFailWith500Code"
    resp, err := http.Get(url)

    if err != nil {
        t.Fatalf("Request failed: %v", err)
    }
    defer resp.Body.Close()
    respbody, err = ioutil.ReadAll(resp.Body)

    if resp.StatusCode != 404 {
        t.Fatalf("Invalid Status Code received, expected 404, got %d", resp.StatusCode)
    }

    _, err = html.Parse(strings.NewReader(string(respbody)))
    if err != nil {
        t.Fatalf("HTML validation failed for error page returned!")
    }
}
func Test500PageWith0xHashPrefix(t *testing.T) {
    srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
    defer srv.Close()

    var resp *http.Response
    var respbody []byte

    url := srv.URL + "/bzz:/0xthisShouldFailWith500CodeAndAHelpfulMessage"
    resp, err := http.Get(url)

    if err != nil {
        t.Fatalf("Request failed: %v", err)
    }
    defer resp.Body.Close()
    respbody, err = ioutil.ReadAll(resp.Body)

    if resp.StatusCode != 404 {
        t.Fatalf("Invalid Status Code received, expected 404, got %d", resp.StatusCode)
    }

    if !strings.Contains(string(respbody), "The requested hash seems to be prefixed with") {
        t.Fatalf("Did not receive the expected error message")
    }

    _, err = html.Parse(strings.NewReader(string(respbody)))
    if err != nil {
        t.Fatalf("HTML validation failed for error page returned!")
    }
}

func TestJsonResponse(t *testing.T) {
    srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
    defer srv.Close()

    var resp *http.Response
    var respbody []byte

    url := srv.URL + "/bzz:/thisShouldFailWith500Code/"
    req, err := http.NewRequest("GET", url, nil)
    if err != nil {
        t.Fatalf("Request failed: %v", err)
    }
    req.Header.Set("Accept", "application/json")
    resp, err = http.DefaultClient.Do(req)
    if err != nil {
        t.Fatalf("Request failed: %v", err)
    }

    defer resp.Body.Close()
    respbody, err = ioutil.ReadAll(resp.Body)

    if resp.StatusCode != 404 {
        t.Fatalf("Invalid Status Code received, expected 404, got %d", resp.StatusCode)
    }

    if !isJSON(string(respbody)) {
        t.Fatalf("Expected response to be JSON, received invalid JSON: %s", string(respbody))
    }

}

func isJSON(s string) bool {
    var js map[string]interface{}
    return json.Unmarshal([]byte(s), &js) == nil
}