mirror of https://github.com/poanetwork/quorum.git
66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
// Copyright 2017 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 testutil
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import (
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"bytes"
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"io"
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"io/ioutil"
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"math/rand"
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"os"
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"strings"
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"testing"
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)
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// TempFileWithContent is a helper function that creates a temp file that contains the following string content then closes the file handle
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// it returns the complete file path
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func TempFileWithContent(t *testing.T, content string) string {
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tempFile, err := ioutil.TempFile("", "swarm-temp-file")
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if err != nil {
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t.Fatal(err)
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}
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_, err = io.Copy(tempFile, strings.NewReader(content))
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if err != nil {
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os.RemoveAll(tempFile.Name())
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t.Fatal(err)
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}
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if err = tempFile.Close(); err != nil {
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t.Fatal(err)
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}
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return tempFile.Name()
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}
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// RandomBytes returns pseudo-random deterministic result
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// because test fails must be reproducible
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func RandomBytes(seed, length int) []byte {
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b := make([]byte, length)
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reader := rand.New(rand.NewSource(int64(seed)))
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for n := 0; n < length; {
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read, err := reader.Read(b[n:])
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if err != nil {
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panic(err)
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}
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n += read
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}
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return b
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}
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func RandomReader(seed, length int) *bytes.Reader {
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return bytes.NewReader(RandomBytes(seed, length))
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}
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