240 lines
6.8 KiB
Go
240 lines
6.8 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package api
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import (
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/swarm/storage"
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)
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func testApi(t *testing.T, f func(*Api)) {
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datadir, err := ioutil.TempDir("", "bzz-test")
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if err != nil {
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t.Fatalf("unable to create temp dir: %v", err)
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}
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os.RemoveAll(datadir)
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defer os.RemoveAll(datadir)
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dpa, err := storage.NewLocalDPA(datadir)
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if err != nil {
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return
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}
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api := NewApi(dpa, nil)
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dpa.Start()
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f(api)
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dpa.Stop()
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}
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type testResponse struct {
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reader storage.LazySectionReader
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*Response
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}
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func checkResponse(t *testing.T, resp *testResponse, exp *Response) {
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if resp.MimeType != exp.MimeType {
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t.Errorf("incorrect mimeType. expected '%s', got '%s'", exp.MimeType, resp.MimeType)
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}
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if resp.Status != exp.Status {
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t.Errorf("incorrect status. expected '%d', got '%d'", exp.Status, resp.Status)
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}
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if resp.Size != exp.Size {
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t.Errorf("incorrect size. expected '%d', got '%d'", exp.Size, resp.Size)
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}
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if resp.reader != nil {
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content := make([]byte, resp.Size)
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read, _ := resp.reader.Read(content)
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if int64(read) != exp.Size {
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t.Errorf("incorrect content length. expected '%d...', got '%d...'", read, exp.Size)
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}
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resp.Content = string(content)
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}
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if resp.Content != exp.Content {
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// if !bytes.Equal(resp.Content, exp.Content)
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t.Errorf("incorrect content. expected '%s...', got '%s...'", string(exp.Content), string(resp.Content))
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}
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}
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// func expResponse(content []byte, mimeType string, status int) *Response {
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func expResponse(content string, mimeType string, status int) *Response {
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log.Trace(fmt.Sprintf("expected content (%v): %v ", len(content), content))
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return &Response{mimeType, status, int64(len(content)), content}
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}
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// func testGet(t *testing.T, api *Api, bzzhash string) *testResponse {
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func testGet(t *testing.T, api *Api, bzzhash, path string) *testResponse {
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key := storage.Key(common.Hex2Bytes(bzzhash))
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reader, mimeType, status, err := api.Get(key, path)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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quitC := make(chan bool)
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size, err := reader.Size(quitC)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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log.Trace(fmt.Sprintf("reader size: %v ", size))
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s := make([]byte, size)
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_, err = reader.Read(s)
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if err != io.EOF {
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t.Fatalf("unexpected error: %v", err)
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}
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reader.Seek(0, 0)
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return &testResponse{reader, &Response{mimeType, status, size, string(s)}}
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// return &testResponse{reader, &Response{mimeType, status, reader.Size(), nil}}
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}
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func TestApiPut(t *testing.T) {
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testApi(t, func(api *Api) {
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content := "hello"
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exp := expResponse(content, "text/plain", 0)
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// exp := expResponse([]byte(content), "text/plain", 0)
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key, err := api.Put(content, exp.MimeType)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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resp := testGet(t, api, key.String(), "")
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checkResponse(t, resp, exp)
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})
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}
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// testResolver implements the Resolver interface and either returns the given
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// hash if it is set, or returns a "name not found" error
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type testResolver struct {
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hash *common.Hash
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}
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func newTestResolver(addr string) *testResolver {
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r := &testResolver{}
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if addr != "" {
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hash := common.HexToHash(addr)
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r.hash = &hash
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}
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return r
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}
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func (t *testResolver) Resolve(addr string) (common.Hash, error) {
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if t.hash == nil {
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return common.Hash{}, fmt.Errorf("DNS name not found: %q", addr)
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}
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return *t.hash, nil
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}
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// TestAPIResolve tests resolving URIs which can either contain content hashes
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// or ENS names
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func TestAPIResolve(t *testing.T) {
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ensAddr := "swarm.eth"
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hashAddr := "1111111111111111111111111111111111111111111111111111111111111111"
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resolvedAddr := "2222222222222222222222222222222222222222222222222222222222222222"
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doesResolve := newTestResolver(resolvedAddr)
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doesntResolve := newTestResolver("")
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type test struct {
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desc string
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dns Resolver
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addr string
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immutable bool
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result string
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expectErr error
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}
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tests := []*test{
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{
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desc: "DNS not configured, hash address, returns hash address",
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dns: nil,
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addr: hashAddr,
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result: hashAddr,
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},
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{
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desc: "DNS not configured, ENS address, returns error",
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dns: nil,
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addr: ensAddr,
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expectErr: errors.New(`no DNS to resolve name: "swarm.eth"`),
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},
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{
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desc: "DNS configured, hash address, hash resolves, returns resolved address",
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dns: doesResolve,
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addr: hashAddr,
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result: resolvedAddr,
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},
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{
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desc: "DNS configured, immutable hash address, hash resolves, returns hash address",
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dns: doesResolve,
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addr: hashAddr,
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immutable: true,
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result: hashAddr,
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},
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{
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desc: "DNS configured, hash address, hash doesn't resolve, returns hash address",
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dns: doesntResolve,
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addr: hashAddr,
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result: hashAddr,
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},
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{
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desc: "DNS configured, ENS address, name resolves, returns resolved address",
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dns: doesResolve,
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addr: ensAddr,
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result: resolvedAddr,
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},
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{
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desc: "DNS configured, immutable ENS address, name resolves, returns error",
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dns: doesResolve,
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addr: ensAddr,
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immutable: true,
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expectErr: errors.New(`immutable address not a content hash: "swarm.eth"`),
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},
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{
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desc: "DNS configured, ENS address, name doesn't resolve, returns error",
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dns: doesntResolve,
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addr: ensAddr,
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expectErr: errors.New(`DNS name not found: "swarm.eth"`),
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},
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}
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for _, x := range tests {
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t.Run(x.desc, func(t *testing.T) {
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api := &Api{dns: x.dns}
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uri := &URI{Addr: x.addr, Scheme: "bzz"}
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if x.immutable {
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uri.Scheme = "bzz-immutable"
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}
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res, err := api.Resolve(uri)
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if err == nil {
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if x.expectErr != nil {
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t.Fatalf("expected error %q, got result %q", x.expectErr, res)
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}
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if res.String() != x.result {
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t.Fatalf("expected result %q, got %q", x.result, res)
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}
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} else {
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if x.expectErr == nil {
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t.Fatalf("expected no error, got %q", err)
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}
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if err.Error() != x.expectErr.Error() {
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t.Fatalf("expected error %q, got %q", x.expectErr, err)
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}
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}
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})
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}
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}
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