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87 lines
3.2 KiB
87 lines
3.2 KiB
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package codec
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import (
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/util/testleak"
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)
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var _ = Suite(&testBytesSuite{})
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type testBytesSuite struct {
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}
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func (s *testBytesSuite) TestBytesCodec(c *C) {
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defer testleak.AfterTest(c)()
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inputs := []struct {
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enc []byte
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dec []byte
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desc bool
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}{
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{[]byte{}, []byte{0, 0, 0, 0, 0, 0, 0, 0, 247}, false},
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{[]byte{}, []byte{255, 255, 255, 255, 255, 255, 255, 255, 8}, true},
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{[]byte{0}, []byte{0, 0, 0, 0, 0, 0, 0, 0, 248}, false},
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{[]byte{0}, []byte{255, 255, 255, 255, 255, 255, 255, 255, 7}, true},
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{[]byte{1, 2, 3}, []byte{1, 2, 3, 0, 0, 0, 0, 0, 250}, false},
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{[]byte{1, 2, 3}, []byte{254, 253, 252, 255, 255, 255, 255, 255, 5}, true},
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{[]byte{1, 2, 3, 0}, []byte{1, 2, 3, 0, 0, 0, 0, 0, 251}, false},
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{[]byte{1, 2, 3, 0}, []byte{254, 253, 252, 255, 255, 255, 255, 255, 4}, true},
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{[]byte{1, 2, 3, 4, 5, 6, 7}, []byte{1, 2, 3, 4, 5, 6, 7, 0, 254}, false},
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{[]byte{1, 2, 3, 4, 5, 6, 7}, []byte{254, 253, 252, 251, 250, 249, 248, 255, 1}, true},
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{[]byte{0, 0, 0, 0, 0, 0, 0, 0}, []byte{0, 0, 0, 0, 0, 0, 0, 0, 255, 0, 0, 0, 0, 0, 0, 0, 0, 247}, false},
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{[]byte{0, 0, 0, 0, 0, 0, 0, 0}, []byte{255, 255, 255, 255, 255, 255, 255, 255, 0, 255, 255, 255, 255, 255, 255, 255, 255, 8}, true},
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{[]byte{1, 2, 3, 4, 5, 6, 7, 8}, []byte{1, 2, 3, 4, 5, 6, 7, 8, 255, 0, 0, 0, 0, 0, 0, 0, 0, 247}, false},
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{[]byte{1, 2, 3, 4, 5, 6, 7, 8}, []byte{254, 253, 252, 251, 250, 249, 248, 247, 0, 255, 255, 255, 255, 255, 255, 255, 255, 8}, true},
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{[]byte{1, 2, 3, 4, 5, 6, 7, 8, 9}, []byte{1, 2, 3, 4, 5, 6, 7, 8, 255, 9, 0, 0, 0, 0, 0, 0, 0, 248}, false},
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{[]byte{1, 2, 3, 4, 5, 6, 7, 8, 9}, []byte{254, 253, 252, 251, 250, 249, 248, 247, 0, 246, 255, 255, 255, 255, 255, 255, 255, 7}, true},
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}
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for _, input := range inputs {
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c.Assert(EncodedBytesLength(len(input.enc)), Equals, len(input.dec))
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if input.desc {
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b := EncodeBytesDesc(nil, input.enc)
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c.Assert(b, BytesEquals, input.dec)
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_, d, err := DecodeBytesDesc(b, nil)
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c.Assert(err, IsNil)
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c.Assert(d, BytesEquals, input.enc)
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} else {
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b := EncodeBytes(nil, input.enc)
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c.Assert(b, BytesEquals, input.dec)
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_, d, err := DecodeBytes(b, nil)
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c.Assert(err, IsNil)
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c.Assert(d, BytesEquals, input.enc)
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}
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}
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// Test error decode.
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errInputs := [][]byte{
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{1, 2, 3, 4},
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{0, 0, 0, 0, 0, 0, 0, 247},
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{0, 0, 0, 0, 0, 0, 0, 0, 246},
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{0, 0, 0, 0, 0, 0, 0, 1, 247},
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{1, 2, 3, 4, 5, 6, 7, 8, 0},
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{1, 2, 3, 4, 5, 6, 7, 8, 255, 1},
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{1, 2, 3, 4, 5, 6, 7, 8, 255, 1, 2, 3, 4, 5, 6, 7, 8},
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{1, 2, 3, 4, 5, 6, 7, 8, 255, 1, 2, 3, 4, 5, 6, 7, 8, 255},
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{1, 2, 3, 4, 5, 6, 7, 8, 255, 1, 2, 3, 4, 5, 6, 7, 8, 0},
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}
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for _, input := range errInputs {
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_, _, err := DecodeBytes(input, nil)
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c.Assert(err, NotNil)
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}
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}
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