github.1485827954.workers.dev/ethereum/go-ethereum@v1.14.3/core/asm/lex_test.go (about)

     1  // Copyright 2017 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 asm
    18  
    19  import (
    20  	"reflect"
    21  	"testing"
    22  )
    23  
    24  func lexAll(src string) []token {
    25  	ch := Lex([]byte(src), false)
    26  
    27  	var tokens []token
    28  	for i := range ch {
    29  		tokens = append(tokens, i)
    30  	}
    31  	return tokens
    32  }
    33  
    34  func TestLexer(t *testing.T) {
    35  	tests := []struct {
    36  		input  string
    37  		tokens []token
    38  	}{
    39  		{
    40  			input:  ";; this is a comment",
    41  			tokens: []token{{typ: lineStart}, {typ: eof}},
    42  		},
    43  		{
    44  			input:  "0x12345678",
    45  			tokens: []token{{typ: lineStart}, {typ: number, text: "0x12345678"}, {typ: eof}},
    46  		},
    47  		{
    48  			input:  "0x123ggg",
    49  			tokens: []token{{typ: lineStart}, {typ: number, text: "0x123"}, {typ: element, text: "ggg"}, {typ: eof}},
    50  		},
    51  		{
    52  			input:  "12345678",
    53  			tokens: []token{{typ: lineStart}, {typ: number, text: "12345678"}, {typ: eof}},
    54  		},
    55  		{
    56  			input:  "123abc",
    57  			tokens: []token{{typ: lineStart}, {typ: number, text: "123"}, {typ: element, text: "abc"}, {typ: eof}},
    58  		},
    59  		{
    60  			input:  "0123abc",
    61  			tokens: []token{{typ: lineStart}, {typ: number, text: "0123"}, {typ: element, text: "abc"}, {typ: eof}},
    62  		},
    63  		{
    64  			input:  "00123abc",
    65  			tokens: []token{{typ: lineStart}, {typ: number, text: "00123"}, {typ: element, text: "abc"}, {typ: eof}},
    66  		},
    67  		{
    68  			input:  "@foo",
    69  			tokens: []token{{typ: lineStart}, {typ: label, text: "foo"}, {typ: eof}},
    70  		},
    71  		{
    72  			input:  "@label123",
    73  			tokens: []token{{typ: lineStart}, {typ: label, text: "label123"}, {typ: eof}},
    74  		},
    75  		// Comment after label
    76  		{
    77  			input:  "@label123 ;; comment",
    78  			tokens: []token{{typ: lineStart}, {typ: label, text: "label123"}, {typ: eof}},
    79  		},
    80  		// Comment after instruction
    81  		{
    82  			input:  "push 3 ;; comment\nadd",
    83  			tokens: []token{{typ: lineStart}, {typ: element, text: "push"}, {typ: number, text: "3"}, {typ: lineEnd, text: "\n"}, {typ: lineStart, lineno: 1}, {typ: element, lineno: 1, text: "add"}, {typ: eof, lineno: 1}},
    84  		},
    85  	}
    86  
    87  	for _, test := range tests {
    88  		tokens := lexAll(test.input)
    89  		if !reflect.DeepEqual(tokens, test.tokens) {
    90  			t.Errorf("input %q\ngot:  %+v\nwant: %+v", test.input, tokens, test.tokens)
    91  		}
    92  	}
    93  }