github.com/ylsGit/go-ethereum@v1.6.5/compression/rle/read_write_test.go (about)

     1  // Copyright 2014 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package rle
    18  
    19  import (
    20  	"testing"
    21  
    22  	checker "gopkg.in/check.v1"
    23  )
    24  
    25  func Test(t *testing.T) { checker.TestingT(t) }
    26  
    27  type CompressionRleSuite struct{}
    28  
    29  var _ = checker.Suite(&CompressionRleSuite{})
    30  
    31  func (s *CompressionRleSuite) TestDecompressSimple(c *checker.C) {
    32  	exp := []byte{0xc5, 0xd2, 0x46, 0x1, 0x86, 0xf7, 0x23, 0x3c, 0x92, 0x7e, 0x7d, 0xb2, 0xdc, 0xc7, 0x3, 0xc0, 0xe5, 0x0, 0xb6, 0x53, 0xca, 0x82, 0x27, 0x3b, 0x7b, 0xfa, 0xd8, 0x4, 0x5d, 0x85, 0xa4, 0x70}
    33  	res, err := Decompress([]byte{token, 0xfd})
    34  	c.Assert(err, checker.IsNil)
    35  	c.Assert(res, checker.DeepEquals, exp)
    36  	// if bytes.Compare(res, exp) != 0 {
    37  	// 	t.Error("empty sha3", res)
    38  	// }
    39  
    40  	exp = []byte{0x56, 0xe8, 0x1f, 0x17, 0x1b, 0xcc, 0x55, 0xa6, 0xff, 0x83, 0x45, 0xe6, 0x92, 0xc0, 0xf8, 0x6e, 0x5b, 0x48, 0xe0, 0x1b, 0x99, 0x6c, 0xad, 0xc0, 0x1, 0x62, 0x2f, 0xb5, 0xe3, 0x63, 0xb4, 0x21}
    41  	res, err = Decompress([]byte{token, 0xfe})
    42  	c.Assert(err, checker.IsNil)
    43  	c.Assert(res, checker.DeepEquals, exp)
    44  	// if bytes.Compare(res, exp) != 0 {
    45  	// 	t.Error("0x80 sha3", res)
    46  	// }
    47  
    48  	res, err = Decompress([]byte{token, 0xff})
    49  	c.Assert(err, checker.IsNil)
    50  	c.Assert(res, checker.DeepEquals, []byte{token})
    51  	// if bytes.Compare(res, []byte{token}) != 0 {
    52  	// 	t.Error("token", res)
    53  	// }
    54  
    55  	res, err = Decompress([]byte{token, 12})
    56  	c.Assert(err, checker.IsNil)
    57  	c.Assert(res, checker.DeepEquals, make([]byte, 10))
    58  	// if bytes.Compare(res, make([]byte, 10)) != 0 {
    59  	// 	t.Error("10 * zero", res)
    60  	// }
    61  }
    62  
    63  // func TestDecompressMulti(t *testing.T) {
    64  // 	res, err := Decompress([]byte{token, 0xfd, token, 0xfe, token, 12})
    65  // 	if err != nil {
    66  // 		t.Error(err)
    67  // 	}
    68  
    69  // 	var exp []byte
    70  // 	exp = append(exp, crypto.Keccak256([]byte(""))...)
    71  // 	exp = append(exp, crypto.Keccak256([]byte{0x80})...)
    72  // 	exp = append(exp, make([]byte, 10)...)
    73  
    74  // 	if bytes.Compare(res, res) != 0 {
    75  // 		t.Error("Expected", exp, "result", res)
    76  // 	}
    77  // }
    78  
    79  // func TestCompressSimple(t *testing.T) {
    80  // 	res := Compress([]byte{0, 0, 0, 0, 0})
    81  // 	if bytes.Compare(res, []byte{token, 7}) != 0 {
    82  // 		t.Error("5 * zero", res)
    83  // 	}
    84  
    85  // 	res = Compress(crypto.Keccak256([]byte("")))
    86  // 	if bytes.Compare(res, []byte{token, emptyShaToken}) != 0 {
    87  // 		t.Error("empty sha", res)
    88  // 	}
    89  
    90  // 	res = Compress(crypto.Keccak256([]byte{0x80}))
    91  // 	if bytes.Compare(res, []byte{token, emptyListShaToken}) != 0 {
    92  // 		t.Error("empty list sha", res)
    93  // 	}
    94  
    95  // 	res = Compress([]byte{token})
    96  // 	if bytes.Compare(res, []byte{token, tokenToken}) != 0 {
    97  // 		t.Error("token", res)
    98  // 	}
    99  // }
   100  
   101  // func TestCompressMulti(t *testing.T) {
   102  // 	in := []byte{0, 0, 0, 0, 0}
   103  // 	in = append(in, crypto.Keccak256([]byte(""))...)
   104  // 	in = append(in, crypto.Keccak256([]byte{0x80})...)
   105  // 	in = append(in, token)
   106  // 	res := Compress(in)
   107  
   108  // 	exp := []byte{token, 7, token, emptyShaToken, token, emptyListShaToken, token, tokenToken}
   109  // 	if bytes.Compare(res, exp) != 0 {
   110  // 		t.Error("expected", exp, "got", res)
   111  // 	}
   112  // }
   113  
   114  // func TestCompressDecompress(t *testing.T) {
   115  // 	var in []byte
   116  
   117  // 	for i := 0; i < 20; i++ {
   118  // 		in = append(in, []byte{0, 0, 0, 0, 0}...)
   119  // 		in = append(in, crypto.Keccak256([]byte(""))...)
   120  // 		in = append(in, crypto.Keccak256([]byte{0x80})...)
   121  // 		in = append(in, []byte{123, 2, 19, 89, 245, 254, 255, token, 98, 233}...)
   122  // 		in = append(in, token)
   123  // 	}
   124  
   125  // 	c := Compress(in)
   126  // 	d, err := Decompress(c)
   127  // 	if err != nil {
   128  // 		t.Error(err)
   129  // 	}
   130  
   131  // 	if bytes.Compare(d, in) != 0 {
   132  // 		t.Error("multi failed\n", d, "\n", in)
   133  // 	}
   134  // }