github.com/m3db/m3@v1.5.0/src/m3em/agent/multi_writer_test.go (about)

     1  // Copyright (c) 2017 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package agent
    22  
    23  import (
    24  	"io/ioutil"
    25  	"os"
    26  	"path"
    27  	"testing"
    28  
    29  	"github.com/stretchr/testify/require"
    30  )
    31  
    32  func TestMultiWrite(t *testing.T) {
    33  	dir := newTempDir(t)
    34  	defer os.RemoveAll(dir)
    35  
    36  	flags := os.O_CREATE | os.O_WRONLY
    37  	fileMode := os.FileMode(0666)
    38  	dirMode := os.ModeDir | os.FileMode(0755)
    39  
    40  	paths := []string{"a/b/c", "d/e", "f"}
    41  	fullPaths := []string{}
    42  	for _, p := range paths {
    43  		fullPaths = append(fullPaths, path.Join(dir, p))
    44  	}
    45  
    46  	writer, err := newMultiWriter(fullPaths, flags, fileMode, dirMode)
    47  	require.NoError(t, err)
    48  
    49  	testBytes := []byte("some random string")
    50  	n, err := writer.write(testBytes)
    51  	require.NoError(t, err)
    52  	require.Equal(t, len(testBytes), n)
    53  
    54  	require.NoError(t, writer.Close())
    55  
    56  	for _, fp := range fullPaths {
    57  		bytes, err := ioutil.ReadFile(fp)
    58  		require.NoError(t, err)
    59  		require.Equal(t, testBytes, bytes)
    60  	}
    61  }