github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/signer/fourbyte/fourbyte_test.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package fourbyte
    19  
    20  import (
    21  	"fmt"
    22  	"io/ioutil"
    23  	"strings"
    24  	"testing"
    25  
    26  	"github.com/AigarNetwork/aigar/accounts/abi"
    27  	"github.com/AigarNetwork/aigar/common"
    28  )
    29  
    30  // Tests that all the selectors contained in the 4byte database are valid.
    31  func TestEmbeddedDatabase(t *testing.T) {
    32  	db, err := New()
    33  	if err != nil {
    34  		t.Fatal(err)
    35  	}
    36  	for id, selector := range db.embedded {
    37  		abistring, err := parseSelector(selector)
    38  		if err != nil {
    39  			t.Errorf("Failed to convert selector to ABI: %v", err)
    40  			continue
    41  		}
    42  		abistruct, err := abi.JSON(strings.NewReader(string(abistring)))
    43  		if err != nil {
    44  			t.Errorf("Failed to parse ABI: %v", err)
    45  			continue
    46  		}
    47  		m, err := abistruct.MethodById(common.Hex2Bytes(id))
    48  		if err != nil {
    49  			t.Errorf("Failed to get method by id (%s): %v", id, err)
    50  			continue
    51  		}
    52  		if m.Sig() != selector {
    53  			t.Errorf("Selector mismatch: have %v, want %v", m.Sig(), selector)
    54  		}
    55  	}
    56  }
    57  
    58  // Tests that custom 4byte datasets can be handled too.
    59  func TestCustomDatabase(t *testing.T) {
    60  	// Create a new custom 4byte database with no embedded component
    61  	tmpdir, err := ioutil.TempDir("", "signer-4byte-test")
    62  	if err != nil {
    63  		t.Fatal(err)
    64  	}
    65  	filename := fmt.Sprintf("%s/4byte_custom.json", tmpdir)
    66  
    67  	db, err := NewWithFile(filename)
    68  	if err != nil {
    69  		t.Fatal(err)
    70  	}
    71  	db.embedded = make(map[string]string)
    72  
    73  	// Ensure the database is empty, insert and verify
    74  	calldata := common.Hex2Bytes("a52c101edeadbeef")
    75  	if _, err = db.Selector(calldata); err == nil {
    76  		t.Fatalf("Should not find a match on empty database")
    77  	}
    78  	if err = db.AddSelector("send(uint256)", calldata); err != nil {
    79  		t.Fatalf("Failed to save file: %v", err)
    80  	}
    81  	if _, err = db.Selector(calldata); err != nil {
    82  		t.Fatalf("Failed to find a match for abi signature: %v", err)
    83  	}
    84  	// Check that the file as persisted to disk by creating a new instance
    85  	db2, err := NewFromFile(filename)
    86  	if err != nil {
    87  		t.Fatalf("Failed to create new abidb: %v", err)
    88  	}
    89  	if _, err = db2.Selector(calldata); err != nil {
    90  		t.Fatalf("Failed to find a match for persisted abi signature: %v", err)
    91  	}
    92  }