Official Go implementation of the Ethereum protocol
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go-ethereum/common/big_test.go

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// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package common
import (
"bytes"
"testing"
)
func TestMisc(t *testing.T) {
a := Big("10")
b := Big("57896044618658097711785492504343953926634992332820282019728792003956564819968")
c := []byte{1, 2, 3, 4}
z := BitTest(a, 1)
if z != true {
t.Error("Expected true got", z)
}
U256(a)
S256(a)
U256(b)
S256(b)
BigD(c)
}
func TestBigMax(t *testing.T) {
a := Big("10")
b := Big("5")
max1 := BigMax(a, b)
if max1 != a {
t.Errorf("Expected %d got %d", a, max1)
}
max2 := BigMax(b, a)
if max2 != a {
t.Errorf("Expected %d got %d", a, max2)
}
}
func TestBigMin(t *testing.T) {
a := Big("10")
b := Big("5")
min1 := BigMin(a, b)
if min1 != b {
t.Errorf("Expected %d got %d", b, min1)
}
min2 := BigMin(b, a)
if min2 != b {
t.Errorf("Expected %d got %d", b, min2)
}
}
func TestBigCopy(t *testing.T) {
a := Big("10")
b := BigCopy(a)
c := Big("1000000000000")
y := BigToBytes(b, 16)
ybytes := []byte{0, 10}
z := BigToBytes(c, 16)
zbytes := []byte{232, 212, 165, 16, 0}
if bytes.Compare(y, ybytes) != 0 {
t.Error("Got", ybytes)
}
if bytes.Compare(z, zbytes) != 0 {
t.Error("Got", zbytes)
}
}