github.com/klaytn/klaytn@v1.12.1/rlp/iterator_test.go (about)

     1  // Modifications Copyright 2022 The klaytn Authors
     2  // Copyright 2019 The go-ethereum Authors
     3  // This file is part of the go-ethereum library.
     4  //
     5  // The go-ethereum 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-ethereum 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-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  // This file is derived from rlp/iterator_test.go(2022/05/19)
    19  // Modified and improved for the klaytn development.
    20  
    21  package rlp
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/klaytn/klaytn/common/hexutil"
    27  )
    28  
    29  // TestIterator tests some basic things about the ListIterator. A more
    30  // comprehensive test can be found in core/rlp_test.go, where we can
    31  // use both types and rlp without dependency cycles
    32  func TestIterator(t *testing.T) {
    33  	bodyRlpHex := "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"
    34  	bodyRlp := hexutil.MustDecode(bodyRlpHex)
    35  
    36  	it, err := NewListIterator(bodyRlp)
    37  	if err != nil {
    38  		t.Fatal(err)
    39  	}
    40  	// Check that txs exist
    41  	if !it.Next() {
    42  		t.Fatal("expected two elems, got zero")
    43  	}
    44  	txs := it.Value()
    45  	// Check that uncles exist
    46  	if !it.Next() {
    47  		t.Fatal("expected two elems, got one")
    48  	}
    49  	txit, err := NewListIterator(txs)
    50  	if err != nil {
    51  		t.Fatal(err)
    52  	}
    53  	i := 0
    54  	for txit.Next() {
    55  		if txit.err != nil {
    56  			t.Fatal(txit.err)
    57  		}
    58  		i++
    59  	}
    60  	if exp := 2; i != exp {
    61  		t.Errorf("count wrong, expected %d got %d", i, exp)
    62  	}
    63  }