github.com/jonasnick/go-ethereum@v0.7.12-0.20150216215225-22176f05d387/trie/encoding_test.go (about)

     1  package trie
     2  
     3  import (
     4  	checker "gopkg.in/check.v1"
     5  )
     6  
     7  type TrieEncodingSuite struct{}
     8  
     9  var _ = checker.Suite(&TrieEncodingSuite{})
    10  
    11  func (s *TrieEncodingSuite) TestCompactEncode(c *checker.C) {
    12  	// even compact encode
    13  	test1 := []byte{1, 2, 3, 4, 5}
    14  	res1 := CompactEncode(test1)
    15  	c.Assert(res1, checker.Equals, "\x11\x23\x45")
    16  
    17  	// odd compact encode
    18  	test2 := []byte{0, 1, 2, 3, 4, 5}
    19  	res2 := CompactEncode(test2)
    20  	c.Assert(res2, checker.Equals, "\x00\x01\x23\x45")
    21  
    22  	//odd terminated compact encode
    23  	test3 := []byte{0, 15, 1, 12, 11, 8 /*term*/, 16}
    24  	res3 := CompactEncode(test3)
    25  	c.Assert(res3, checker.Equals, "\x20\x0f\x1c\xb8")
    26  
    27  	// even terminated compact encode
    28  	test4 := []byte{15, 1, 12, 11, 8 /*term*/, 16}
    29  	res4 := CompactEncode(test4)
    30  	c.Assert(res4, checker.Equals, "\x3f\x1c\xb8")
    31  }
    32  
    33  func (s *TrieEncodingSuite) TestCompactHexDecode(c *checker.C) {
    34  	exp := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16}
    35  	res := CompactHexDecode("verb")
    36  	c.Assert(res, checker.DeepEquals, exp)
    37  }
    38  
    39  func (s *TrieEncodingSuite) TestCompactDecode(c *checker.C) {
    40  	// odd compact decode
    41  	exp := []byte{1, 2, 3, 4, 5}
    42  	res := CompactDecode("\x11\x23\x45")
    43  	c.Assert(res, checker.DeepEquals, exp)
    44  
    45  	// even compact decode
    46  	exp = []byte{0, 1, 2, 3, 4, 5}
    47  	res = CompactDecode("\x00\x01\x23\x45")
    48  	c.Assert(res, checker.DeepEquals, exp)
    49  
    50  	// even terminated compact decode
    51  	exp = []byte{0, 15, 1, 12, 11, 8 /*term*/, 16}
    52  	res = CompactDecode("\x20\x0f\x1c\xb8")
    53  	c.Assert(res, checker.DeepEquals, exp)
    54  
    55  	// even terminated compact decode
    56  	exp = []byte{15, 1, 12, 11, 8 /*term*/, 16}
    57  	res = CompactDecode("\x3f\x1c\xb8")
    58  	c.Assert(res, checker.DeepEquals, exp)
    59  }