github.com/ethereum/go-ethereum@v1.14.3/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", "stateMutability": "view"}, 27 {"type": "function", "name": "send", "inputs": [{ "name": "amount", "type": "uint256" }]}, 28 {"type": "function", "name": "transfer", "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 {"stateMutability":"nonpayable","type":"fallback"}, 34 {"stateMutability":"payable","type":"receive"} 35 ]` 36 37 func TestMethodString(t *testing.T) { 38 t.Parallel() 39 var table = []struct { 40 method string 41 expectation string 42 }{ 43 { 44 method: "balance", 45 expectation: "function balance() view returns()", 46 }, 47 { 48 method: "send", 49 expectation: "function send(uint256 amount) returns()", 50 }, 51 { 52 method: "transfer", 53 expectation: "function transfer(address from, address to, uint256 value) returns(bool success)", 54 }, 55 { 56 method: "tuple", 57 expectation: "function tuple((uint256,uint256) a) returns()", 58 }, 59 { 60 method: "tupleArray", 61 expectation: "function tupleArray((uint256,uint256)[5] a) returns()", 62 }, 63 { 64 method: "tupleSlice", 65 expectation: "function tupleSlice((uint256,uint256)[] a) returns()", 66 }, 67 { 68 method: "complexTuple", 69 expectation: "function complexTuple((uint256,uint256)[5][] a) returns()", 70 }, 71 { 72 method: "fallback", 73 expectation: "fallback() returns()", 74 }, 75 { 76 method: "receive", 77 expectation: "receive() payable returns()", 78 }, 79 } 80 81 abi, err := JSON(strings.NewReader(methoddata)) 82 if err != nil { 83 t.Fatal(err) 84 } 85 86 for _, test := range table { 87 var got string 88 switch test.method { 89 case "fallback": 90 got = abi.Fallback.String() 91 case "receive": 92 got = abi.Receive.String() 93 default: 94 got = abi.Methods[test.method].String() 95 } 96 if got != test.expectation { 97 t.Errorf("expected string to be %s, got %s", test.expectation, got) 98 } 99 } 100 } 101 102 func TestMethodSig(t *testing.T) { 103 t.Parallel() 104 var cases = []struct { 105 method string 106 expect string 107 }{ 108 { 109 method: "balance", 110 expect: "balance()", 111 }, 112 { 113 method: "send", 114 expect: "send(uint256)", 115 }, 116 { 117 method: "transfer", 118 expect: "transfer(address,address,uint256)", 119 }, 120 { 121 method: "tuple", 122 expect: "tuple((uint256,uint256))", 123 }, 124 { 125 method: "tupleArray", 126 expect: "tupleArray((uint256,uint256)[5])", 127 }, 128 { 129 method: "tupleSlice", 130 expect: "tupleSlice((uint256,uint256)[])", 131 }, 132 { 133 method: "complexTuple", 134 expect: "complexTuple((uint256,uint256)[5][])", 135 }, 136 } 137 abi, err := JSON(strings.NewReader(methoddata)) 138 if err != nil { 139 t.Fatal(err) 140 } 141 142 for _, test := range cases { 143 got := abi.Methods[test.method].Sig 144 if got != test.expect { 145 t.Errorf("expected string to be %s, got %s", test.expect, got) 146 } 147 } 148 }