github.com/cheng762/platon-go@v1.8.17-0.20190529111256-7deff2d7be26/swarm/testutil/file.go (about)

     1  // Copyright 2017 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package testutil
    18  
    19  import (
    20  	"io"
    21  	"io/ioutil"
    22  	"os"
    23  	"strings"
    24  	"testing"
    25  )
    26  
    27  // TempFileWithContent is a helper function that creates a temp file that contains the following string content then closes the file handle
    28  // it returns the complete file path
    29  func TempFileWithContent(t *testing.T, content string) string {
    30  	tempFile, err := ioutil.TempFile("", "swarm-temp-file")
    31  	if err != nil {
    32  		t.Fatal(err)
    33  	}
    34  
    35  	_, err = io.Copy(tempFile, strings.NewReader(content))
    36  	if err != nil {
    37  		os.RemoveAll(tempFile.Name())
    38  		t.Fatal(err)
    39  	}
    40  	if err = tempFile.Close(); err != nil {
    41  		t.Fatal(err)
    42  	}
    43  	return tempFile.Name()
    44  }