github.com/jiajun1992/watercarver@v0.0.0-20191031150618-dfc2b17c0c4a/go-ethereum/accounts/abi/method_test.go (about)

     1  // Copyright 2018 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 abi
    18  
    19  import (
    20  	"strings"
    21  	"testing"
    22  )
    23  
    24  const methoddata = `
    25  [
    26  	{"type": "function", "name": "balance", "constant": true },
    27  	{"type": "function", "name": "send", "constant": false, "inputs": [{ "name": "amount", "type": "uint256" }]},
    28  	{"type": "function", "name": "transfer", "constant": false, "inputs": [{"name": "from", "type": "address"}, {"name": "to", "type": "address"}, {"name": "value", "type": "uint256"}], "outputs": [{"name": "success", "type": "bool"}]},
    29  	{"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple"}],"name":"tuple","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},
    30  	{"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple[]"}],"name":"tupleSlice","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},
    31  	{"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple[5]"}],"name":"tupleArray","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},
    32  	{"constant":false,"inputs":[{"components":[{"name":"x","type":"uint256"},{"name":"y","type":"uint256"}],"name":"a","type":"tuple[5][]"}],"name":"complexTuple","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}
    33  ]`
    34  
    35  func TestMethodString(t *testing.T) {
    36  	var table = []struct {
    37  		method      string
    38  		expectation string
    39  	}{
    40  		{
    41  			method:      "balance",
    42  			expectation: "function balance() constant returns()",
    43  		},
    44  		{
    45  			method:      "send",
    46  			expectation: "function send(uint256 amount) returns()",
    47  		},
    48  		{
    49  			method:      "transfer",
    50  			expectation: "function transfer(address from, address to, uint256 value) returns(bool success)",
    51  		},
    52  		{
    53  			method:      "tuple",
    54  			expectation: "function tuple((uint256,uint256) a) returns()",
    55  		},
    56  		{
    57  			method:      "tupleArray",
    58  			expectation: "function tupleArray((uint256,uint256)[5] a) returns()",
    59  		},
    60  		{
    61  			method:      "tupleSlice",
    62  			expectation: "function tupleSlice((uint256,uint256)[] a) returns()",
    63  		},
    64  		{
    65  			method:      "complexTuple",
    66  			expectation: "function complexTuple((uint256,uint256)[5][] a) returns()",
    67  		},
    68  	}
    69  
    70  	abi, err := JSON(strings.NewReader(methoddata))
    71  	if err != nil {
    72  		t.Fatal(err)
    73  	}
    74  
    75  	for _, test := range table {
    76  		got := abi.Methods[test.method].String()
    77  		if got != test.expectation {
    78  			t.Errorf("expected string to be %s, got %s", test.expectation, got)
    79  		}
    80  	}
    81  }
    82  
    83  func TestMethodSig(t *testing.T) {
    84  	var cases = []struct {
    85  		method string
    86  		expect string
    87  	}{
    88  		{
    89  			method: "balance",
    90  			expect: "balance()",
    91  		},
    92  		{
    93  			method: "send",
    94  			expect: "send(uint256)",
    95  		},
    96  		{
    97  			method: "transfer",
    98  			expect: "transfer(address,address,uint256)",
    99  		},
   100  		{
   101  			method: "tuple",
   102  			expect: "tuple((uint256,uint256))",
   103  		},
   104  		{
   105  			method: "tupleArray",
   106  			expect: "tupleArray((uint256,uint256)[5])",
   107  		},
   108  		{
   109  			method: "tupleSlice",
   110  			expect: "tupleSlice((uint256,uint256)[])",
   111  		},
   112  		{
   113  			method: "complexTuple",
   114  			expect: "complexTuple((uint256,uint256)[5][])",
   115  		},
   116  	}
   117  	abi, err := JSON(strings.NewReader(methoddata))
   118  	if err != nil {
   119  		t.Fatal(err)
   120  	}
   121  
   122  	for _, test := range cases {
   123  		got := abi.Methods[test.method].Sig()
   124  		if got != test.expect {
   125  			t.Errorf("expected string to be %s, got %s", test.expect, got)
   126  		}
   127  	}
   128  }