cmd/swarm, swarm/api/http, swarm/bmt, swarm/fuse, swarm/network/stream, swarm/storage, swarm/storage/encryption, swarm/testutil: use pseudo-random instead of crypto-random for test files content generation (#18083)

- Replace "crypto/rand" to "math/rand" for files content generation
- Remove swarm/network_test.go.Shuffle and swarm/btm/btm_test.go.Shuffle - because go1.9 support dropped (see https://github.com/ethereum/go-ethereum/pull/17807 and comments to swarm/network_test.go.Shuffle)

3 files changed, 114 insertions, 27 deletions

diff --git a/swarm/api/http/response_test.go b/swarm/api/http/response_test.go
index 50a704be6..486c19ab0 100644
--- a/swarm/api/http/response_test.go
+++ b/swarm/api/http/response_test.go
@@ -24,12 +24,10 @@ import (
 	"testing"
 
 	"golang.org/x/net/html"
-
-	"github.com/ethereum/go-ethereum/swarm/testutil"
 )
 
 func TestError(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	var resp *http.Response
@@ -55,7 +53,7 @@ func TestError(t *testing.T) {
 }
 
 func Test404Page(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	var resp *http.Response
@@ -81,7 +79,7 @@ func Test404Page(t *testing.T) {
 }
 
 func Test500Page(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	var resp *http.Response
@@ -106,7 +104,7 @@ func Test500Page(t *testing.T) {
 	}
 }
 func Test500PageWith0xHashPrefix(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	var resp *http.Response
@@ -136,7 +134,7 @@ func Test500PageWith0xHashPrefix(t *testing.T) {
 }
 
 func TestJsonResponse(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	var resp *http.Response
diff --git a/swarm/api/http/server_test.go b/swarm/api/http/server_test.go
index 04d0e045a..1ef3deece 100644
--- a/swarm/api/http/server_test.go
+++ b/swarm/api/http/server_test.go
@@ -20,7 +20,6 @@ import (
 	"archive/tar"
 	"bytes"
 	"context"
-	"crypto/rand"
 	"encoding/json"
 	"errors"
 	"flag"
@@ -58,7 +57,7 @@ func init() {
 	log.Root().SetHandler(log.CallerFileHandler(log.LvlFilterHandler(log.Lvl(*loglevel), log.StreamHandler(os.Stderr, log.TerminalFormat(true)))))
 }
 
-func serverFunc(api *api.API) testutil.TestServer {
+func serverFunc(api *api.API) TestServer {
 	return NewServer(api, "")
 }
 
@@ -79,7 +78,7 @@ func TestBzzFeedMultihash(t *testing.T) {
 
 	signer, _ := newTestSigner()
 
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	// add the data our multihash aliased manifest will point to
@@ -167,26 +166,19 @@ func TestBzzFeedMultihash(t *testing.T) {
 
 // Test Swarm feeds using the raw update methods
 func TestBzzFeed(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	signer, _ := newTestSigner()
 
 	defer srv.Close()
 
 	// data of update 1
-	update1Data := make([]byte, 666)
+	update1Data := testutil.RandomBytes(1, 666)
 	update1Timestamp := srv.CurrentTime
-	_, err := rand.Read(update1Data)
-	if err != nil {
-		t.Fatal(err)
-	}
 	//data for update 2
 	update2Data := []byte("foo")
 
 	topic, _ := feed.NewTopic("foo.eth", nil)
 	updateRequest := feed.NewFirstRequest(topic)
-	if err != nil {
-		t.Fatal(err)
-	}
 	updateRequest.SetData(update1Data)
 
 	if err := updateRequest.Sign(signer); err != nil {
@@ -450,7 +442,7 @@ func testBzzGetPath(encrypted bool, t *testing.T) {
 
 	addr := [3]storage.Address{}
 
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	for i, mf := range testmanifest {
@@ -688,7 +680,7 @@ func TestBzzTar(t *testing.T) {
 }
 
 func testBzzTar(encrypted bool, t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 	fileNames := []string{"tmp1.txt", "tmp2.lock", "tmp3.rtf"}
 	fileContents := []string{"tmp1textfilevalue", "tmp2lockfilelocked", "tmp3isjustaplaintextfile"}
@@ -823,7 +815,7 @@ func TestBzzRootRedirectEncrypted(t *testing.T) {
 }
 
 func testBzzRootRedirect(toEncrypt bool, t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	// create a manifest with some data at the root path
@@ -878,7 +870,7 @@ func testBzzRootRedirect(toEncrypt bool, t *testing.T) {
 }
 
 func TestMethodsNotAllowed(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 	databytes := "bar"
 	for _, c := range []struct {
@@ -937,7 +929,7 @@ func httpDo(httpMethod string, url string, reqBody io.Reader, headers map[string
 }
 
 func TestGet(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	for _, testCase := range []struct {
@@ -1020,7 +1012,7 @@ func TestGet(t *testing.T) {
 }
 
 func TestModify(t *testing.T) {
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	swarmClient := swarm.NewClient(srv.URL)
@@ -1121,7 +1113,7 @@ func TestMultiPartUpload(t *testing.T) {
 	// POST /bzz:/ Content-Type: multipart/form-data
 	verbose := false
 	// Setup Swarm
-	srv := testutil.NewTestSwarmServer(t, serverFunc, nil)
+	srv := NewTestSwarmServer(t, serverFunc, nil)
 	defer srv.Close()
 
 	url := fmt.Sprintf("%s/bzz:/", srv.URL)
@@ -1152,7 +1144,7 @@ func TestMultiPartUpload(t *testing.T) {
 // TestBzzGetFileWithResolver tests fetching a file using a mocked ENS resolver
 func TestBzzGetFileWithResolver(t *testing.T) {
 	resolver := newTestResolveValidator("")
-	srv := testutil.NewTestSwarmServer(t, serverFunc, resolver)
+	srv := NewTestSwarmServer(t, serverFunc, resolver)
 	defer srv.Close()
 	fileNames := []string{"dir1/tmp1.txt", "dir2/tmp2.lock", "dir3/tmp3.rtf"}
 	fileContents := []string{"tmp1textfilevalue", "tmp2lockfilelocked", "tmp3isjustaplaintextfile"}
diff --git a/swarm/api/http/test_server.go b/swarm/api/http/test_server.go
new file mode 100644
index 000000000..9245c9c5b
--- /dev/null
+++ b/swarm/api/http/test_server.go
@@ -0,0 +1,97 @@
+// 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 (
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/swarm/api"
+	"github.com/ethereum/go-ethereum/swarm/storage"
+	"github.com/ethereum/go-ethereum/swarm/storage/feed"
+)
+
+type TestServer interface {
+	ServeHTTP(http.ResponseWriter, *http.Request)
+}
+
+func NewTestSwarmServer(t *testing.T, serverFunc func(*api.API) TestServer, resolver api.Resolver) *TestSwarmServer {
+	dir, err := ioutil.TempDir("", "swarm-storage-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	storeparams := storage.NewDefaultLocalStoreParams()
+	storeparams.DbCapacity = 5000000
+	storeparams.CacheCapacity = 5000
+	storeparams.Init(dir)
+	localStore, err := storage.NewLocalStore(storeparams, nil)
+	if err != nil {
+		os.RemoveAll(dir)
+		t.Fatal(err)
+	}
+	fileStore := storage.NewFileStore(localStore, storage.NewFileStoreParams())
+
+	// Swarm feeds test setup
+	feedsDir, err := ioutil.TempDir("", "swarm-feeds-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	rhparams := &feed.HandlerParams{}
+	rh, err := feed.NewTestHandler(feedsDir, rhparams)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	a := api.NewAPI(fileStore, resolver, rh.Handler, nil)
+	srv := httptest.NewServer(serverFunc(a))
+	tss := &TestSwarmServer{
+		Server:    srv,
+		FileStore: fileStore,
+		dir:       dir,
+		Hasher:    storage.MakeHashFunc(storage.DefaultHash)(),
+		cleanup: func() {
+			srv.Close()
+			rh.Close()
+			os.RemoveAll(dir)
+			os.RemoveAll(feedsDir)
+		},
+		CurrentTime: 42,
+	}
+	feed.TimestampProvider = tss
+	return tss
+}
+
+type TestSwarmServer struct {
+	*httptest.Server
+	Hasher      storage.SwarmHash
+	FileStore   *storage.FileStore
+	dir         string
+	cleanup     func()
+	CurrentTime uint64
+}
+
+func (t *TestSwarmServer) Close() {
+	t.cleanup()
+}
+
+func (t *TestSwarmServer) Now() feed.Timestamp {
+	return feed.Timestamp{Time: t.CurrentTime}
+}