github.com/bytom/bytom@v1.1.2-0.20221014091027-bbcba3df6075/common/bech32/bech32_test.go (about)

     1  package bech32
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  	"testing"
     7  )
     8  
     9  func TestBech32(t *testing.T) {
    10  	tests := []struct {
    11  		str   string
    12  		valid bool
    13  	}{
    14  		{"A12UEL5L", true},
    15  		{"an83characterlonghumanreadablepartthatcontainsthenumber1andtheexcludedcharactersbio1tt5tgs", true},
    16  		{"abcdef1qpzry9x8gf2tvdw0s3jn54khce6mua7lmqqqxw", true},
    17  		{"11qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqc8247j", true},
    18  		{"split1checkupstagehandshakeupstreamerranterredcaperred2y9e3w", true},
    19  		{"split1checkupstagehandshakeupstreamerranterredcaperred2y9e2w", false},                       // invalid checksum
    20  		{"s lit1checkupstagehandshakeupstreamerranterredcaperredp8hs2p", false},                       // invalid character (space) in hrp
    21  		{"spl" + fmt.Sprint(127) + "t1checkupstagehandshakeupstreamerranterredcaperred2y9e3w", false}, // invalid character (DEL) in hrp
    22  		{"split1cheo2y9e2w", false}, // invalid character (o) in data part
    23  		{"split1a2y9w", false},      // too short data part
    24  		{"1checkupstagehandshakeupstreamerranterredcaperred2y9e3w", false},                                     // empty hrp
    25  		{"11qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqsqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqc8247j", false}, // too long
    26  	}
    27  
    28  	for _, test := range tests {
    29  		str := test.str
    30  		hrp, decoded, err := Bech32Decode(str)
    31  		if !test.valid {
    32  			// Invalid string decoding should result in error.
    33  			if err == nil {
    34  				t.Error("expected decoding to fail for "+
    35  					"invalid string %v", test.str)
    36  			}
    37  			continue
    38  		}
    39  
    40  		// Valid string decoding should result in no error.
    41  		if err != nil {
    42  			t.Errorf("expected string to be valid bech32: %v", err)
    43  		}
    44  
    45  		// Check that it encodes to the same string
    46  		encoded, err := Bech32Encode(hrp, decoded)
    47  		if err != nil {
    48  			t.Errorf("encoding failed: %v", err)
    49  		}
    50  
    51  		if encoded != strings.ToLower(str) {
    52  			t.Errorf("expected data to encode to %v, but got %v",
    53  				str, encoded)
    54  		}
    55  
    56  		// Flip a bit in the string an make sure it is caught.
    57  		pos := strings.LastIndexAny(str, "1")
    58  		flipped := str[:pos+1] + string((str[pos+1] ^ 1)) + str[pos+2:]
    59  		_, _, err = Bech32Decode(flipped)
    60  		if err == nil {
    61  			t.Error("expected decoding to fail")
    62  		}
    63  	}
    64  }