github.com/10XDev/rclone@v1.52.3-0.20200626220027-16af9ab76b2a/lib/readers/pattern_reader_test.go (about)

     1  package readers
     2  
     3  import (
     4  	"io"
     5  	"io/ioutil"
     6  	"testing"
     7  
     8  	"github.com/stretchr/testify/assert"
     9  	"github.com/stretchr/testify/require"
    10  )
    11  
    12  func TestPatternReader(t *testing.T) {
    13  	b2 := make([]byte, 1)
    14  
    15  	r := NewPatternReader(0)
    16  	b, err := ioutil.ReadAll(r)
    17  	require.NoError(t, err)
    18  	assert.Equal(t, []byte{}, b)
    19  	n, err := r.Read(b2)
    20  	require.Equal(t, io.EOF, err)
    21  	require.Equal(t, 0, n)
    22  
    23  	r = NewPatternReader(10)
    24  	b, err = ioutil.ReadAll(r)
    25  	require.NoError(t, err)
    26  	assert.Equal(t, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, b)
    27  	n, err = r.Read(b2)
    28  	require.Equal(t, io.EOF, err)
    29  	require.Equal(t, 0, n)
    30  }