109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package number
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import (
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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)
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func TestSet(t *testing.T) {
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a := Uint(0)
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b := Uint(10)
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a.Set(b)
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if a.num.Cmp(b.num) != 0 {
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t.Error("didn't compare", a, b)
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}
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c := Uint(0).SetBytes(common.Hex2Bytes("0a"))
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if c.num.Cmp(big.NewInt(10)) != 0 {
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t.Error("c set bytes failed.")
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}
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}
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func TestInitialiser(t *testing.T) {
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check := false
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init := NewInitialiser(func(x *Number) *Number {
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check = true
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return x
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})
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a := init(0).Add(init(1), init(2))
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if a.Cmp(init(3)) != 0 {
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t.Error("expected 3. got", a)
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}
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if !check {
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t.Error("expected limiter to be called")
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}
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}
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func TestGet(t *testing.T) {
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a := Uint(10)
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if a.Uint64() != 10 {
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t.Error("expected to get 10. got", a.Uint64())
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}
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a = Uint(10)
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if a.Int64() != 10 {
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t.Error("expected to get 10. got", a.Int64())
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}
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}
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func TestCmp(t *testing.T) {
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a := Uint(10)
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b := Uint(10)
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c := Uint(11)
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if a.Cmp(b) != 0 {
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t.Error("a b == 0 failed", a, b)
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}
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if a.Cmp(c) >= 0 {
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t.Error("a c < 0 failed", a, c)
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}
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if c.Cmp(b) <= 0 {
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t.Error("c b > 0 failed", c, b)
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}
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}
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func TestMaxArith(t *testing.T) {
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a := Uint(0).Add(MaxUint256, One)
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if a.Cmp(Zero) != 0 {
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t.Error("expected max256 + 1 = 0 got", a)
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}
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a = Uint(0).Sub(Uint(0), One)
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if a.Cmp(MaxUint256) != 0 {
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t.Error("expected 0 - 1 = max256 got", a)
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}
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a = Int(0).Sub(Int(0), One)
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if a.Cmp(MinOne) != 0 {
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t.Error("expected 0 - 1 = -1 got", a)
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}
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}
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func TestConversion(t *testing.T) {
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a := Int(-1)
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b := a.Uint256()
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if b.Cmp(MaxUint256) != 0 {
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t.Error("expected -1 => unsigned to return max. got", b)
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}
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}
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