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46 lines
779 B
Go
46 lines
779 B
Go
package filex
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import (
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"os"
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"testing"
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"github.com/stretchr/testify/assert"
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"zero/core/fs"
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)
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func TestRangeReader(t *testing.T) {
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const text = `hello
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world`
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file, err := fs.TempFileWithText(text)
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assert.Nil(t, err)
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defer func() {
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file.Close()
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os.Remove(file.Name())
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}()
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reader := NewRangeReader(file, 5, 8)
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buf := make([]byte, 10)
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n, err := reader.Read(buf)
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assert.Nil(t, err)
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assert.Equal(t, 3, n)
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assert.Equal(t, `
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wo`, string(buf[:n]))
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}
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func TestRangeReader_OutOfRange(t *testing.T) {
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const text = `hello
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world`
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file, err := fs.TempFileWithText(text)
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assert.Nil(t, err)
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defer func() {
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file.Close()
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os.Remove(file.Name())
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}()
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reader := NewRangeReader(file, 50, 8)
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buf := make([]byte, 10)
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_, err = reader.Read(buf)
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assert.NotNil(t, err)
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}
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