github.com/ncw/rclone@v1.48.1-0.20190724201158-a35aa1360e3e/fs/options_test.go (about)

     1  package fs
     2  
     3  import (
     4  	"fmt"
     5  	"testing"
     6  
     7  	"github.com/stretchr/testify/assert"
     8  	"github.com/stretchr/testify/require"
     9  )
    10  
    11  func TestParseRangeOption(t *testing.T) {
    12  	for _, test := range []struct {
    13  		in   string
    14  		want RangeOption
    15  		err  string
    16  	}{
    17  		{in: "", err: "doesn't start with bytes="},
    18  		{in: "bytes=1-2,3-4", err: "contains multiple ranges"},
    19  		{in: "bytes=100", err: "contains no '-'"},
    20  		{in: "bytes=x-8", err: "bad start"},
    21  		{in: "bytes=8-x", err: "bad end"},
    22  		{in: "bytes=1-2", want: RangeOption{Start: 1, End: 2}},
    23  		{in: "bytes=-123456789123456789", want: RangeOption{Start: -1, End: 123456789123456789}},
    24  		{in: "bytes=123456789123456789-", want: RangeOption{Start: 123456789123456789, End: -1}},
    25  		{in: "bytes=  1  -  2  ", want: RangeOption{Start: 1, End: 2}},
    26  		{in: "bytes=-", want: RangeOption{Start: -1, End: -1}},
    27  		{in: "bytes=  -  ", want: RangeOption{Start: -1, End: -1}},
    28  	} {
    29  		got, err := ParseRangeOption(test.in)
    30  		what := fmt.Sprintf("parsing %q", test.in)
    31  		if test.err != "" {
    32  			require.Contains(t, err.Error(), test.err)
    33  			require.Nil(t, got, what)
    34  		} else {
    35  			require.NoError(t, err, what)
    36  			assert.Equal(t, test.want, *got, what)
    37  		}
    38  	}
    39  }
    40  
    41  func TestRangeOptionDecode(t *testing.T) {
    42  	for _, test := range []struct {
    43  		in         RangeOption
    44  		size       int64
    45  		wantOffset int64
    46  		wantLimit  int64
    47  	}{
    48  		{in: RangeOption{Start: 1, End: 10}, size: 100, wantOffset: 1, wantLimit: 10},
    49  		{in: RangeOption{Start: 10, End: 10}, size: 100, wantOffset: 10, wantLimit: 1},
    50  		{in: RangeOption{Start: 10, End: 9}, size: 100, wantOffset: 10, wantLimit: 0},
    51  		{in: RangeOption{Start: 1, End: -1}, size: 100, wantOffset: 1, wantLimit: -1},
    52  		{in: RangeOption{Start: -1, End: 90}, size: 100, wantOffset: 10, wantLimit: -1},
    53  		{in: RangeOption{Start: -1, End: -1}, size: 100, wantOffset: 0, wantLimit: -1},
    54  	} {
    55  		gotOffset, gotLimit := test.in.Decode(test.size)
    56  		what := fmt.Sprintf("%+v size=%d", test.in, test.size)
    57  		assert.Equal(t, test.wantOffset, gotOffset, "offset "+what)
    58  		assert.Equal(t, test.wantLimit, gotLimit, "limit "+what)
    59  	}
    60  }