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@ -17,113 +17,88 @@ |
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package trie |
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import ( |
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"encoding/hex" |
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"bytes" |
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"testing" |
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checker "gopkg.in/check.v1" |
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) |
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func TestEncoding(t *testing.T) { checker.TestingT(t) } |
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type TrieEncodingSuite struct{} |
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var _ = checker.Suite(&TrieEncodingSuite{}) |
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func (s *TrieEncodingSuite) TestCompactEncode(c *checker.C) { |
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// even compact encode
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test1 := []byte{1, 2, 3, 4, 5} |
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res1 := compactEncode(test1) |
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c.Assert(res1, checker.DeepEquals, []byte("\x11\x23\x45")) |
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// odd compact encode
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test2 := []byte{0, 1, 2, 3, 4, 5} |
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res2 := compactEncode(test2) |
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c.Assert(res2, checker.DeepEquals, []byte("\x00\x01\x23\x45")) |
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//odd terminated compact encode
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test3 := []byte{0, 15, 1, 12, 11, 8 /*term*/, 16} |
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res3 := compactEncode(test3) |
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c.Assert(res3, checker.DeepEquals, []byte("\x20\x0f\x1c\xb8")) |
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// even terminated compact encode
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test4 := []byte{15, 1, 12, 11, 8 /*term*/, 16} |
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res4 := compactEncode(test4) |
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c.Assert(res4, checker.DeepEquals, []byte("\x3f\x1c\xb8")) |
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} |
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func (s *TrieEncodingSuite) TestCompactHexDecode(c *checker.C) { |
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exp := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16} |
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res := compactHexDecode([]byte("verb")) |
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c.Assert(res, checker.DeepEquals, exp) |
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} |
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func (s *TrieEncodingSuite) TestCompactHexEncode(c *checker.C) { |
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exp := []byte("verb") |
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res := compactHexEncode([]byte{7, 6, 6, 5, 7, 2, 6, 2, 16}) |
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c.Assert(res, checker.DeepEquals, exp) |
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} |
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func (s *TrieEncodingSuite) TestCompactDecode(c *checker.C) { |
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// odd compact decode
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exp := []byte{1, 2, 3, 4, 5} |
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res := compactDecode([]byte("\x11\x23\x45")) |
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c.Assert(res, checker.DeepEquals, exp) |
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// even compact decode
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exp = []byte{0, 1, 2, 3, 4, 5} |
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res = compactDecode([]byte("\x00\x01\x23\x45")) |
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c.Assert(res, checker.DeepEquals, exp) |
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// even terminated compact decode
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exp = []byte{0, 15, 1, 12, 11, 8 /*term*/, 16} |
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res = compactDecode([]byte("\x20\x0f\x1c\xb8")) |
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c.Assert(res, checker.DeepEquals, exp) |
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// even terminated compact decode
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exp = []byte{15, 1, 12, 11, 8 /*term*/, 16} |
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res = compactDecode([]byte("\x3f\x1c\xb8")) |
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c.Assert(res, checker.DeepEquals, exp) |
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func TestHexCompact(t *testing.T) { |
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tests := []struct{ hex, compact []byte }{ |
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// empty keys, with and without terminator.
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{hex: []byte{}, compact: []byte{0x00}}, |
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{hex: []byte{16}, compact: []byte{0x20}}, |
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// odd length, no terminator
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{hex: []byte{1, 2, 3, 4, 5}, compact: []byte{0x11, 0x23, 0x45}}, |
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// even length, no terminator
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{hex: []byte{0, 1, 2, 3, 4, 5}, compact: []byte{0x00, 0x01, 0x23, 0x45}}, |
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// odd length, terminator
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{hex: []byte{15, 1, 12, 11, 8, 16 /*term*/}, compact: []byte{0x3f, 0x1c, 0xb8}}, |
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// even length, terminator
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{hex: []byte{0, 15, 1, 12, 11, 8, 16 /*term*/}, compact: []byte{0x20, 0x0f, 0x1c, 0xb8}}, |
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} |
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for _, test := range tests { |
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if c := hexToCompact(test.hex); !bytes.Equal(c, test.compact) { |
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t.Errorf("hexToCompact(%x) -> %x, want %x", test.hex, c, test.compact) |
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} |
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if h := compactToHex(test.compact); !bytes.Equal(h, test.hex) { |
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t.Errorf("compactToHex(%x) -> %x, want %x", test.compact, h, test.hex) |
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} |
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} |
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} |
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func (s *TrieEncodingSuite) TestDecodeCompact(c *checker.C) { |
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exp, _ := hex.DecodeString("012345") |
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res := decodeCompact([]byte{0, 1, 2, 3, 4, 5}) |
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c.Assert(res, checker.DeepEquals, exp) |
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exp, _ = hex.DecodeString("012345") |
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res = decodeCompact([]byte{0, 1, 2, 3, 4, 5, 16}) |
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c.Assert(res, checker.DeepEquals, exp) |
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exp, _ = hex.DecodeString("abcdef") |
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res = decodeCompact([]byte{10, 11, 12, 13, 14, 15}) |
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c.Assert(res, checker.DeepEquals, exp) |
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func TestHexKeybytes(t *testing.T) { |
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tests := []struct{ key, hexIn, hexOut []byte }{ |
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{key: []byte{}, hexIn: []byte{16}, hexOut: []byte{16}}, |
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{key: []byte{}, hexIn: []byte{}, hexOut: []byte{16}}, |
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{ |
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key: []byte{0x12, 0x34, 0x56}, |
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hexIn: []byte{1, 2, 3, 4, 5, 6, 16}, |
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hexOut: []byte{1, 2, 3, 4, 5, 6, 16}, |
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}, |
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{ |
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key: []byte{0x12, 0x34, 0x5}, |
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hexIn: []byte{1, 2, 3, 4, 0, 5, 16}, |
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hexOut: []byte{1, 2, 3, 4, 0, 5, 16}, |
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}, |
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{ |
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key: []byte{0x12, 0x34, 0x56}, |
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hexIn: []byte{1, 2, 3, 4, 5, 6}, |
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hexOut: []byte{1, 2, 3, 4, 5, 6, 16}, |
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}, |
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} |
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for _, test := range tests { |
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if h := keybytesToHex(test.key); !bytes.Equal(h, test.hexOut) { |
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t.Errorf("keybytesToHex(%x) -> %x, want %x", test.key, h, test.hexOut) |
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} |
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if k := hexToKeybytes(test.hexIn); !bytes.Equal(k, test.key) { |
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t.Errorf("hexToKeybytes(%x) -> %x, want %x", test.hexIn, k, test.key) |
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} |
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} |
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} |
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func BenchmarkCompactEncode(b *testing.B) { |
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testBytes := []byte{0, 15, 1, 12, 11, 8 /*term*/, 16} |
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func BenchmarkHexToCompact(b *testing.B) { |
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testBytes := []byte{0, 15, 1, 12, 11, 8, 16 /*term*/} |
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for i := 0; i < b.N; i++ { |
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compactEncode(testBytes) |
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hexToCompact(testBytes) |
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} |
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} |
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func BenchmarkCompactDecode(b *testing.B) { |
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testBytes := []byte{0, 15, 1, 12, 11, 8 /*term*/, 16} |
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func BenchmarkCompactToHex(b *testing.B) { |
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testBytes := []byte{0, 15, 1, 12, 11, 8, 16 /*term*/} |
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for i := 0; i < b.N; i++ { |
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compactDecode(testBytes) |
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compactToHex(testBytes) |
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} |
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} |
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func BenchmarkCompactHexDecode(b *testing.B) { |
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func BenchmarkKeybytesToHex(b *testing.B) { |
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testBytes := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16} |
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for i := 0; i < b.N; i++ { |
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compactHexDecode(testBytes) |
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keybytesToHex(testBytes) |
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} |
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} |
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func BenchmarkDecodeCompact(b *testing.B) { |
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func BenchmarkHexToKeybytes(b *testing.B) { |
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testBytes := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16} |
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for i := 0; i < b.N; i++ { |
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decodeCompact(testBytes) |
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hexToKeybytes(testBytes) |
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} |
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} |
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