400 lines
11 KiB
Go
400 lines
11 KiB
Go
package types
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import (
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"math/big"
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"math/rand"
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"strconv"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestFromInt64(t *testing.T) {
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for n := 0; n < 20; n++ {
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r := rand.Int63()
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require.Equal(t, r, NewInt(r).Int64())
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}
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}
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func TestIntPanic(t *testing.T) {
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// Max Int = 2^255-1 = 5.789e+76
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// Min Int = -(2^255-1) = -5.789e+76
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require.NotPanics(t, func() { NewIntWithDecimal(1, 76) })
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i1 := NewIntWithDecimal(1, 76)
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require.NotPanics(t, func() { NewIntWithDecimal(2, 76) })
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i2 := NewIntWithDecimal(2, 76)
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require.NotPanics(t, func() { NewIntWithDecimal(3, 76) })
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i3 := NewIntWithDecimal(3, 76)
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require.Panics(t, func() { NewIntWithDecimal(6, 76) })
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require.Panics(t, func() { NewIntWithDecimal(9, 80) })
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// Overflow check
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require.NotPanics(t, func() { i1.Add(i1) })
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require.NotPanics(t, func() { i2.Add(i2) })
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require.Panics(t, func() { i3.Add(i3) })
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require.NotPanics(t, func() { i1.Sub(i1.Neg()) })
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require.NotPanics(t, func() { i2.Sub(i2.Neg()) })
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require.Panics(t, func() { i3.Sub(i3.Neg()) })
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require.Panics(t, func() { i1.Mul(i1) })
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require.Panics(t, func() { i2.Mul(i2) })
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require.Panics(t, func() { i3.Mul(i3) })
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require.Panics(t, func() { i1.Neg().Mul(i1.Neg()) })
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require.Panics(t, func() { i2.Neg().Mul(i2.Neg()) })
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require.Panics(t, func() { i3.Neg().Mul(i3.Neg()) })
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// Underflow check
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i3n := i3.Neg()
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require.NotPanics(t, func() { i3n.Sub(i1) })
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require.NotPanics(t, func() { i3n.Sub(i2) })
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require.Panics(t, func() { i3n.Sub(i3) })
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require.NotPanics(t, func() { i3n.Add(i1.Neg()) })
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require.NotPanics(t, func() { i3n.Add(i2.Neg()) })
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require.Panics(t, func() { i3n.Add(i3.Neg()) })
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require.Panics(t, func() { i1.Mul(i1.Neg()) })
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require.Panics(t, func() { i2.Mul(i2.Neg()) })
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require.Panics(t, func() { i3.Mul(i3.Neg()) })
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// Bound check
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intmax := NewIntFromBigInt(new(big.Int).Sub(new(big.Int).Exp(big.NewInt(2), big.NewInt(255), nil), big.NewInt(1)))
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intmin := intmax.Neg()
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require.NotPanics(t, func() { intmax.Add(ZeroInt()) })
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require.NotPanics(t, func() { intmin.Sub(ZeroInt()) })
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require.Panics(t, func() { intmax.Add(OneInt()) })
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require.Panics(t, func() { intmin.Sub(OneInt()) })
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// Division-by-zero check
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require.Panics(t, func() { i1.Quo(NewInt(0)) })
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}
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// Tests below uses randomness
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// Since we are using *big.Int as underlying value
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// and (U/)Int is immutable value(see TestImmutability(U/)Int)
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// it is safe to use randomness in the tests
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func TestIdentInt(t *testing.T) {
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for d := 0; d < 1000; d++ {
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n := rand.Int63()
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i := NewInt(n)
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ifromstr, ok := NewIntFromString(strconv.FormatInt(n, 10))
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require.True(t, ok)
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cases := []int64{
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i.Int64(),
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i.BigInt().Int64(),
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ifromstr.Int64(),
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NewIntFromBigInt(big.NewInt(n)).Int64(),
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NewIntWithDecimal(n, 0).Int64(),
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}
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for tcnum, tc := range cases {
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require.Equal(t, n, tc, "Int is modified during conversion. tc #%d", tcnum)
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}
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}
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}
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func minint(i1, i2 int64) int64 {
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if i1 < i2 {
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return i1
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}
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return i2
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}
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func maxint(i1, i2 int64) int64 {
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if i1 > i2 {
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return i1
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}
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return i2
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}
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func TestArithInt(t *testing.T) {
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for d := 0; d < 1000; d++ {
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n1 := int64(rand.Int31())
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i1 := NewInt(n1)
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n2 := int64(rand.Int31())
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i2 := NewInt(n2)
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cases := []struct {
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ires Int
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nres int64
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}{
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{i1.Add(i2), n1 + n2},
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{i1.Sub(i2), n1 - n2},
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{i1.Mul(i2), n1 * n2},
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{i1.Quo(i2), n1 / n2},
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{i1.AddRaw(n2), n1 + n2},
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{i1.SubRaw(n2), n1 - n2},
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{i1.MulRaw(n2), n1 * n2},
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{i1.QuoRaw(n2), n1 / n2},
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{MinInt(i1, i2), minint(n1, n2)},
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{MaxInt(i1, i2), maxint(n1, n2)},
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{i1.Neg(), -n1},
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}
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for tcnum, tc := range cases {
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require.Equal(t, tc.nres, tc.ires.Int64(), "Int arithmetic operation does not match with int64 operation. tc #%d", tcnum)
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}
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}
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}
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func TestCompInt(t *testing.T) {
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for d := 0; d < 1000; d++ {
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n1 := int64(rand.Int31())
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i1 := NewInt(n1)
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n2 := int64(rand.Int31())
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i2 := NewInt(n2)
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cases := []struct {
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ires bool
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nres bool
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}{
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{i1.Equal(i2), n1 == n2},
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{i1.GT(i2), n1 > n2},
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{i1.LT(i2), n1 < n2},
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}
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for tcnum, tc := range cases {
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require.Equal(t, tc.nres, tc.ires, "Int comparison operation does not match with int64 operation. tc #%d", tcnum)
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}
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}
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}
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func minuint(i1, i2 uint64) uint64 {
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if i1 < i2 {
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return i1
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}
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return i2
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}
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func maxuint(i1, i2 uint64) uint64 {
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if i1 > i2 {
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return i1
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}
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return i2
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}
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func randint() Int {
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return NewInt(rand.Int63())
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}
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func TestImmutabilityAllInt(t *testing.T) {
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ops := []func(*Int){
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func(i *Int) { _ = i.Add(randint()) },
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func(i *Int) { _ = i.Sub(randint()) },
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func(i *Int) { _ = i.Mul(randint()) },
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func(i *Int) { _ = i.Quo(randint()) },
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func(i *Int) { _ = i.AddRaw(rand.Int63()) },
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func(i *Int) { _ = i.SubRaw(rand.Int63()) },
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func(i *Int) { _ = i.MulRaw(rand.Int63()) },
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func(i *Int) { _ = i.QuoRaw(rand.Int63()) },
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func(i *Int) { _ = i.Neg() },
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func(i *Int) { _ = i.IsZero() },
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func(i *Int) { _ = i.Sign() },
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func(i *Int) { _ = i.Equal(randint()) },
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func(i *Int) { _ = i.GT(randint()) },
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func(i *Int) { _ = i.LT(randint()) },
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func(i *Int) { _ = i.String() },
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}
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for i := 0; i < 1000; i++ {
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n := rand.Int63()
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ni := NewInt(n)
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for opnum, op := range ops {
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op(&ni)
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require.Equal(t, n, ni.Int64(), "Int is modified by operation. tc #%d", opnum)
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require.Equal(t, NewInt(n), ni, "Int is modified by operation. tc #%d", opnum)
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}
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}
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}
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type intop func(Int, *big.Int) (Int, *big.Int)
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func intarith(uifn func(Int, Int) Int, bifn func(*big.Int, *big.Int, *big.Int) *big.Int) intop {
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return func(ui Int, bi *big.Int) (Int, *big.Int) {
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r := rand.Int63()
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br := new(big.Int).SetInt64(r)
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return uifn(ui, NewInt(r)), bifn(new(big.Int), bi, br)
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}
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}
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func intarithraw(uifn func(Int, int64) Int, bifn func(*big.Int, *big.Int, *big.Int) *big.Int) intop {
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return func(ui Int, bi *big.Int) (Int, *big.Int) {
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r := rand.Int63()
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br := new(big.Int).SetInt64(r)
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return uifn(ui, r), bifn(new(big.Int), bi, br)
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}
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}
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func TestImmutabilityArithInt(t *testing.T) {
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size := 500
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ops := []intop{
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intarith(Int.Add, (*big.Int).Add),
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intarith(Int.Sub, (*big.Int).Sub),
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intarith(Int.Mul, (*big.Int).Mul),
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intarith(Int.Quo, (*big.Int).Quo),
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intarithraw(Int.AddRaw, (*big.Int).Add),
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intarithraw(Int.SubRaw, (*big.Int).Sub),
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intarithraw(Int.MulRaw, (*big.Int).Mul),
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intarithraw(Int.QuoRaw, (*big.Int).Quo),
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}
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for i := 0; i < 100; i++ {
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uis := make([]Int, size)
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bis := make([]*big.Int, size)
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n := rand.Int63()
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ui := NewInt(n)
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bi := new(big.Int).SetInt64(n)
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for j := 0; j < size; j++ {
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op := ops[rand.Intn(len(ops))]
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uis[j], bis[j] = op(ui, bi)
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}
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for j := 0; j < size; j++ {
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require.Equal(t, 0, bis[j].Cmp(uis[j].BigInt()), "Int is different from *big.Int. tc #%d, Int %s, *big.Int %s", j, uis[j].String(), bis[j].String())
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require.Equal(t, NewIntFromBigInt(bis[j]), uis[j], "Int is different from *big.Int. tc #%d, Int %s, *big.Int %s", j, uis[j].String(), bis[j].String())
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require.True(t, uis[j].i != bis[j], "Pointer addresses are equal. tc #%d, Int %s, *big.Int %s", j, uis[j].String(), bis[j].String())
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}
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}
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}
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func TestEncodingRandom(t *testing.T) {
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for i := 0; i < 1000; i++ {
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n := rand.Int63()
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ni := NewInt(n)
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var ri Int
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str, err := ni.MarshalAmino()
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require.Nil(t, err)
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err = (&ri).UnmarshalAmino(str)
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require.Nil(t, err)
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require.Equal(t, ni, ri, "MarshalAmino * UnmarshalAmino is not identity. tc #%d, Expected %s, Actual %s", i, ni.String(), ri.String())
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require.True(t, ni.i != ri.i, "Pointer addresses are equal. tc #%d", i)
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bz, err := ni.MarshalJSON()
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require.Nil(t, err)
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err = (&ri).UnmarshalJSON(bz)
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require.Nil(t, err)
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require.Equal(t, ni, ri, "MarshalJSON * UnmarshalJSON is not identity. tc #%d, Expected %s, Actual %s", i, ni.String(), ri.String())
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require.True(t, ni.i != ri.i, "Pointer addresses are equal. tc #%d", i)
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}
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for i := 0; i < 1000; i++ {
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n := rand.Uint64()
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ni := NewUint(n)
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var ri Uint
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str, err := ni.MarshalAmino()
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require.Nil(t, err)
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err = (&ri).UnmarshalAmino(str)
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require.Nil(t, err)
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require.Equal(t, ni, ri, "MarshalAmino * UnmarshalAmino is not identity. tc #%d, Expected %s, Actual %s", i, ni.String(), ri.String())
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require.True(t, ni.i != ri.i, "Pointer addresses are equal. tc #%d", i)
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bz, err := ni.MarshalJSON()
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require.Nil(t, err)
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err = (&ri).UnmarshalJSON(bz)
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require.Nil(t, err)
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require.Equal(t, ni, ri, "MarshalJSON * UnmarshalJSON is not identity. tc #%d, Expected %s, Actual %s", i, ni.String(), ri.String())
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require.True(t, ni.i != ri.i, "Pointer addresses are equal. tc #%d", i)
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}
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}
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func TestEncodingTableInt(t *testing.T) {
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var i Int
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cases := []struct {
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i Int
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bz []byte
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str string
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}{
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{NewInt(0), []byte("\"0\""), "0"},
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{NewInt(100), []byte("\"100\""), "100"},
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{NewInt(51842), []byte("\"51842\""), "51842"},
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{NewInt(19513368), []byte("\"19513368\""), "19513368"},
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{NewInt(999999999999), []byte("\"999999999999\""), "999999999999"},
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}
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for tcnum, tc := range cases {
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bz, err := tc.i.MarshalJSON()
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require.Nil(t, err, "Error marshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.bz, bz, "Marshaled value is different from exported. tc #%d", tcnum)
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err = (&i).UnmarshalJSON(bz)
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require.Nil(t, err, "Error unmarshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.i, i, "Unmarshaled value is different from exported. tc #%d", tcnum)
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str, err := tc.i.MarshalAmino()
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require.Nil(t, err, "Error marshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.str, str, "Marshaled value is different from exported. tc #%d", tcnum)
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err = (&i).UnmarshalAmino(str)
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require.Nil(t, err, "Error unmarshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.i, i, "Unmarshaled value is different from exported. tc #%d", tcnum)
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}
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}
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func TestEncodingTableUint(t *testing.T) {
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var i Uint
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cases := []struct {
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i Uint
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bz []byte
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str string
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}{
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{NewUint(0), []byte("\"0\""), "0"},
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{NewUint(100), []byte("\"100\""), "100"},
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{NewUint(51842), []byte("\"51842\""), "51842"},
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{NewUint(19513368), []byte("\"19513368\""), "19513368"},
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{NewUint(999999999999), []byte("\"999999999999\""), "999999999999"},
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}
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for tcnum, tc := range cases {
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bz, err := tc.i.MarshalJSON()
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require.Nil(t, err, "Error marshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.bz, bz, "Marshaled value is different from exported. tc #%d", tcnum)
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err = (&i).UnmarshalJSON(bz)
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require.Nil(t, err, "Error unmarshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.i, i, "Unmarshaled value is different from exported. tc #%d", tcnum)
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str, err := tc.i.MarshalAmino()
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require.Nil(t, err, "Error marshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.str, str, "Marshaled value is different from exported. tc #%d", tcnum)
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err = (&i).UnmarshalAmino(str)
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require.Nil(t, err, "Error unmarshaling Int. tc #%d, err %s", tcnum, err)
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require.Equal(t, tc.i, i, "Unmarshaled value is different from exported. tc #%d", tcnum)
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}
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}
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func TestSerializationOverflow(t *testing.T) {
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bx, _ := new(big.Int).SetString("91888242871839275229946405745257275988696311157297823662689937894645226298583", 10)
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x := Int{bx}
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y := new(Int)
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// require amino deserialization to fail due to overflow
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xStr, err := x.MarshalAmino()
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require.NoError(t, err)
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err = y.UnmarshalAmino(xStr)
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require.Error(t, err)
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// require JSON deserialization to fail due to overflow
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bz, err := x.MarshalJSON()
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require.NoError(t, err)
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err = y.UnmarshalJSON(bz)
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require.Error(t, err)
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}
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