81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package db
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import (
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"bytes"
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"compress/bzip2"
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"compress/gzip"
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"testing"
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)
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var testDecompressor = []struct {
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message string
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input []byte
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expect []byte
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err error
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readErr error
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}{
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{
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message: "text input",
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input: []byte("cayley data\n"),
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err: nil,
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expect: []byte("cayley data\n"),
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readErr: nil,
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},
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{
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message: "gzip input",
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input: []byte{
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0x1f, 0x8b, 0x08, 0x00, 0x5c, 0xbc, 0xcd, 0x53, 0x00, 0x03, 0x4b, 0x4e, 0xac, 0xcc, 0x49, 0xad,
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0x54, 0x48, 0x49, 0x2c, 0x49, 0xe4, 0x02, 0x00, 0x03, 0xe1, 0xfc, 0xc3, 0x0c, 0x00, 0x00, 0x00,
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},
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err: nil,
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expect: []byte("cayley data\n"),
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readErr: nil,
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},
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{
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message: "bzip2 input",
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input: []byte{
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0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26, 0x53, 0x59, 0xb5, 0x4b, 0xe3, 0xc4, 0x00, 0x00,
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0x02, 0xd1, 0x80, 0x00, 0x10, 0x40, 0x00, 0x2e, 0x04, 0x04, 0x20, 0x20, 0x00, 0x31, 0x06, 0x4c,
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0x41, 0x4c, 0x1e, 0xa7, 0xa9, 0x2a, 0x18, 0x26, 0xb1, 0xc2, 0xee, 0x48, 0xa7, 0x0a, 0x12, 0x16,
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0xa9, 0x7c, 0x78, 0x80,
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},
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err: nil,
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expect: []byte("cayley data\n"),
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readErr: nil,
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},
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{
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message: "bad gzip input",
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input: []byte{0x1f, 0x8b, 'c', 'a', 'y', 'l', 'e', 'y', ' ', 'd', 'a', 't', 'a', '\n'},
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err: gzip.ErrHeader,
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expect: nil,
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readErr: nil,
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},
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{
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message: "bad bzip2 input",
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input: []byte{0x42, 0x5a, 0x68, 'c', 'a', 'y', 'l', 'e', 'y', ' ', 'd', 'a', 't', 'a', '\n'},
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err: nil,
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expect: nil,
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readErr: bzip2.StructuralError("invalid compression level"),
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},
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}
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func TestDecompressor(t *testing.T) {
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for _, test := range testDecompressor {
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buf := bytes.NewReader(test.input)
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r, err := decompressor(buf)
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if err != test.err {
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t.Fatalf("Unexpected error for %s, got:%v expect:%v", test.message, err, test.err)
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}
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if err != nil {
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continue
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}
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p := make([]byte, len(test.expect)*2)
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n, err := r.Read(p)
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if err != test.readErr {
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t.Fatalf("Unexpected error for reading %s, got:%v expect:%v", test.message, err, test.err)
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}
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if bytes.Compare(p[:n], test.expect) != 0 {
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t.Errorf("Unexpected read result for %s, got:%q expect:%q", test.message, p[:n], test.expect)
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}
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}
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}
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