github.com/hyperion-hyn/go-ethereum@v2.4.0+incompatible/consensus/istanbul/types_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 istanbul
    18  
    19  import (
    20  	"math/big"
    21  	"testing"
    22  )
    23  
    24  func TestViewCompare(t *testing.T) {
    25  	// test equality
    26  	srvView := &View{
    27  		Sequence: big.NewInt(2),
    28  		Round:    big.NewInt(1),
    29  	}
    30  	tarView := &View{
    31  		Sequence: big.NewInt(2),
    32  		Round:    big.NewInt(1),
    33  	}
    34  	if r := srvView.Cmp(tarView); r != 0 {
    35  		t.Errorf("source(%v) should be equal to target(%v): have %v, want %v", srvView, tarView, r, 0)
    36  	}
    37  
    38  	// test larger Sequence
    39  	tarView = &View{
    40  		Sequence: big.NewInt(1),
    41  		Round:    big.NewInt(1),
    42  	}
    43  	if r := srvView.Cmp(tarView); r != 1 {
    44  		t.Errorf("source(%v) should be larger than target(%v): have %v, want %v", srvView, tarView, r, 1)
    45  	}
    46  
    47  	// test larger Round
    48  	tarView = &View{
    49  		Sequence: big.NewInt(2),
    50  		Round:    big.NewInt(0),
    51  	}
    52  	if r := srvView.Cmp(tarView); r != 1 {
    53  		t.Errorf("source(%v) should be larger than target(%v): have %v, want %v", srvView, tarView, r, 1)
    54  	}
    55  
    56  	// test smaller Sequence
    57  	tarView = &View{
    58  		Sequence: big.NewInt(3),
    59  		Round:    big.NewInt(1),
    60  	}
    61  	if r := srvView.Cmp(tarView); r != -1 {
    62  		t.Errorf("source(%v) should be smaller than target(%v): have %v, want %v", srvView, tarView, r, -1)
    63  	}
    64  	tarView = &View{
    65  		Sequence: big.NewInt(2),
    66  		Round:    big.NewInt(2),
    67  	}
    68  	if r := srvView.Cmp(tarView); r != -1 {
    69  		t.Errorf("source(%v) should be smaller than target(%v): have %v, want %v", srvView, tarView, r, -1)
    70  	}
    71  }