github.com/pavlo67/common@v0.5.3/common/filelib/append_test.go (about)

     1  package filelib
     2  
     3  import (
     4  	"os"
     5  	"strconv"
     6  	"testing"
     7  
     8  	"github.com/stretchr/testify/require"
     9  )
    10  
    11  const testFileName = "append.test"
    12  
    13  func TestAppendFile(t *testing.T) {
    14  	os.Remove(testFileName)
    15  
    16  	var testData string
    17  
    18  	for i := 0; i < 5; i++ {
    19  		a := strconv.Itoa(i)
    20  		testData += a
    21  
    22  		err := AppendFile(testFileName, []byte(a))
    23  		require.NoError(t, err)
    24  	}
    25  
    26  	data, err := os.ReadFile(testFileName)
    27  	require.NoError(t, err)
    28  	require.Equal(t, testData, string(data))
    29  
    30  }