64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package eestream
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import (
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"bytes"
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"io/ioutil"
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"strings"
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"testing"
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"storj.io/storj/pkg/ranger"
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)
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func TestPad(t *testing.T) {
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for examplenum, example := range []struct {
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data string
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blockSize int
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padding int
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}{
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{"abcdef", 24, 24 - 6},
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{"abcdef", 6, 6},
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{"abcdef", 7, 8},
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{"abcdef", 8, 10},
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{"abcdef", 9, 12},
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{"abcdef", 10, 4},
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{"abcdef", 11, 5},
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{"abcdef", 11, 5},
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{"abcde", 7, 9},
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{"abcdefg", 7, 7},
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{"abcdef", 512, 506},
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{"abcdef", 32 * 1024, 32*1024 - 6},
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{"", 32 * 1024, 32 * 1024},
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{strings.Repeat("\x00", 16*1024), 32 * 1024, 16 * 1024},
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{strings.Repeat("\x00", 32*1024+1), 32 * 1024, 32*1024 - 1},
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} {
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padded, padding := Pad(ranger.ByteRanger([]byte(example.data)),
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example.blockSize)
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if padding != example.padding {
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t.Fatalf("invalid padding: %d, %v != %v", examplenum,
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padding, example.padding)
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}
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if int64(padding+len(example.data)) != padded.Size() {
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t.Fatalf("invalid padding")
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}
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unpadded, err := Unpad(padded, padding)
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data, err := ioutil.ReadAll(unpadded.Range(0, unpadded.Size()))
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if err != nil {
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t.Fatalf("unexpected error")
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}
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if !bytes.Equal(data, []byte(example.data)) {
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t.Fatalf("mismatch")
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}
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unpadded, err = UnpadSlow(padded)
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data, err = ioutil.ReadAll(unpadded.Range(0, unpadded.Size()))
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if err != nil {
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t.Fatalf("unexpected error")
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}
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if !bytes.Equal(data, []byte(example.data)) {
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t.Fatalf("mismatch")
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}
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}
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}
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