Files
cgrates/utils/decimal_test.go
2025-10-13 09:57:41 +02:00

527 lines
15 KiB
Go

/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>
*/
package utils
import (
"encoding/json"
"reflect"
"testing"
"time"
"github.com/ericlagergren/decimal"
)
func TestUnmarshalInvalidSyntax(t *testing.T) {
x := map[string]*Decimal{
"*asr": DecimalNaN,
"*abc": NewDecimal(2, 0),
"*acd": DecimalNaN,
}
var bts []byte
var err error
if bts, err = json.Marshal(x); err != nil {
t.Error(err)
}
var reply map[string]*Decimal
if err = json.Unmarshal(bts, &reply); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(reply, x) {
t.Errorf("Expected %v, received %v", x, reply)
}
}
func TestConvertDecimalToFloat(t *testing.T) {
decm := NewDecimal(9999000000000000, 13)
if conv, ok := decm.Float64(); ok {
t.Errorf("Can convert decimal: %v to float64: %v", decm, conv)
}
decm = NewDecimal(9999, 12)
if conv, ok := decm.Float64(); !ok {
t.Errorf("Cannot convert decimal: %v to float64: %v", decm, conv)
}
decm = NewDecimal(1000000000000000, 16)
if conv, ok := decm.Float64(); !ok {
t.Errorf("Cannot convert decimal: %v to float64: %v", decm, conv)
}
}
func TestDecimalSum(t *testing.T) {
dec1 := NewDecimal(495, 1)
dec2 := NewDecimal(5, 1)
x := SumBig(dec1.Big, dec2.Big)
// as decimals, 50 is different from 50.0 (decimal.Big)
exp := NewDecimal(500, 1)
if !reflect.DeepEqual(x, exp.Big) {
t.Errorf("Expected %+v, received %+v", ToJSON(exp.Big), ToJSON(x))
}
// same for substract
diff := SubstractBig(dec1.Big, dec2.Big)
exp = NewDecimal(490, 1)
if !reflect.DeepEqual(diff, exp.Big) {
t.Errorf("Expected %+v, received %+v", ToJSON(exp.Big), ToJSON(x))
}
// decimal
exp2 := NewDecimal(500, 1)
x2 := SumDecimal(dec1, dec2)
if !reflect.DeepEqual(x2, exp2) {
t.Errorf("Expected %+v, received %+v", ToJSON(exp2), ToJSON(x2))
}
// same for substract
exp2 = NewDecimal(490, 1)
x2 = SubstractDecimal(dec1, dec2)
if !reflect.DeepEqual(x2, exp2) {
t.Errorf("Expected %+v, received %+v", ToJSON(exp2), ToJSON(x2))
}
// to conclude, 50.0 is different from 50, same difference for 49.0 and 49
val1, val2 := NewDecimal(50, 0), NewDecimal(500, 1)
if reflect.DeepEqual(val1, val2) {
t.Errorf("Expected %+v, received %+v", ToJSON(val1), ToJSON(val2))
}
if reflect.DeepEqual(val1.Big, val2.Big) {
t.Errorf("Expected %+v, received %+v", ToJSON(val1.Big), ToJSON(val2.Big))
}
}
func TestNewDecimalDivide(t *testing.T) {
x := decimal.WithContext(DecimalContext).SetUint64(10)
y := decimal.WithContext(DecimalContext).SetUint64(5)
expected, _ := decimal.WithContext(DecimalContext).SetUint64(2).Float64()
received, _ := DivideBig(x, y).Float64()
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestDivideBigNil(t *testing.T) {
var x, y, expected *decimal.Big
x = nil
y = nil
expected = nil
received := DivideBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
x = decimal.WithContext(DecimalContext).SetUint64(2)
y = nil
expected = nil
received = DivideBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestNewDecimalMultiply(t *testing.T) {
x := decimal.WithContext(DecimalContext).SetUint64(10)
y := decimal.WithContext(DecimalContext).SetUint64(5)
expected, _ := decimal.WithContext(DecimalContext).SetUint64(50).Float64()
received, _ := MultiplyBig(x, y).Float64()
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestMultiplyBigNil(t *testing.T) {
var x, y, expected *decimal.Big
x = nil
y = nil
expected = nil
received := MultiplyBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
x = decimal.WithContext(DecimalContext).SetUint64(2)
y = nil
expected = nil
received = MultiplyBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestNewDecimalAdd(t *testing.T) {
x := decimal.WithContext(DecimalContext).SetUint64(10)
y := decimal.WithContext(DecimalContext).SetUint64(5)
expected, _ := decimal.WithContext(DecimalContext).SetUint64(15).Float64()
received, _ := SumBig(x, y).Float64()
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestSumBigNil(t *testing.T) {
var x, y, expected *decimal.Big
x = nil
y = decimal.WithContext(DecimalContext).SetUint64(2)
expected = decimal.WithContext(DecimalContext).SetUint64(2)
received := SumBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
x = decimal.WithContext(DecimalContext).SetUint64(3)
y = nil
expected = decimal.WithContext(DecimalContext).SetUint64(3)
received = SumBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestSubstractBigNil(t *testing.T) {
var x, y, expected *decimal.Big
x = decimal.WithContext(DecimalContext).SetUint64(10)
y = nil
expected = decimal.WithContext(DecimalContext).SetUint64(10)
received := SubstractBig(x, y)
if !reflect.DeepEqual(expected, received) {
t.Errorf("Expecting: <%+v>, received: <%+v>", expected, received)
}
}
func TestNewDecimalFromUnit(t *testing.T) {
if val, err := NewDecimalFromUsage("1ns"); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(val, NewDecimal(1, 0)) {
t.Errorf("Expected %+v, received %+v", NewDecimal(1, 0), val)
}
}
func TestUnmarshalMarshalBinary(t *testing.T) {
dec := &Decimal{}
expected := NewDecimal(10, 0)
if err := dec.UnmarshalBinary([]byte(`10`)); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected.Big, dec.Big) {
t.Errorf("Expected %T, received %T", expected, dec.Big)
}
dec = nil
if err := dec.UnmarshalBinary([]byte(`10`)); err != nil {
t.Error(err)
}
dec1 := new(Decimal)
expected2 := []byte(`0`)
if rcv, err := dec1.MarshalBinary(); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected2, rcv) {
t.Errorf("Expected %+v, received %+v", string(expected2), string(rcv))
}
}
func TestDecimalCompareNaN(t *testing.T) {
dec1 := NewDecimal(2, 0)
if comp := dec1.Compare(DecimalNaN); comp <= 0 {
t.Errorf("%v is higher than %v, means comp is: %v", dec1, DecimalNaN, comp)
}
if comp := DecimalNaN.Compare(dec1); comp >= 0 {
t.Errorf("%v is lower than %v, means comp is: %v", DecimalNaN, dec1, comp)
}
dec1 = DecimalNaN
if comp := dec1.Compare(DecimalNaN); comp != 0 {
t.Errorf("%v is equal to %v, means comp is: %v", dec1, DecimalNaN, comp)
}
}
func TestUnmarshalJSON(t *testing.T) {
dec1 := new(Decimal)
expected := NewDecimal(0, 0)
if err := dec1.UnmarshalJSON([]byte(`0`)); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected, dec1) {
t.Errorf("Expected %+v, received %+v", expected, dec1)
}
var dec2 Decimal
if err := dec2.UnmarshalJSON([]byte(`0`)); err != nil {
t.Error(err)
}
var decnil *Decimal
if err := decnil.UnmarshalJSON([]byte(`0`)); err != nil {
t.Error(err)
}
}
func TestDecimalCalculus(t *testing.T) {
d1 := NewDecimal(10, 0)
d2 := NewDecimal(20, 0)
if d1.Compare(d2) != -1 {
t.Errorf("%+v should be lower that %+v", d1, d2)
}
if rcv := SubstractBig(d2.Big, d1.Big); !reflect.DeepEqual(rcv, d1.Big) {
t.Errorf("Expected %+v, received %+v", ToJSON(d1.Big), ToJSON(rcv))
}
if rcv := MultiplyDecimal(d1, d2); !reflect.DeepEqual(NewDecimal(200, 0), rcv) {
t.Errorf("Expected %+v, received %+v", ToJSON(NewDecimal(200, 0)), ToJSON(rcv))
}
if rcv := SubstractDecimal(d2, d1); !reflect.DeepEqual(d1, rcv) {
t.Errorf("Expected %+v, received %+v", ToJSON(d1), ToJSON(rcv))
}
}
func TestNewDecimalFromUsage(t *testing.T) {
dec := "12tts"
expectedErr := "time: unknown unit \"tts\" in duration \"12tts\""
if _, err := NewDecimalFromUsage(dec); err == nil || err.Error() != expectedErr {
t.Errorf("Expected %+v, received %+v", expectedErr, err)
}
dec = "2"
expected := NewDecimal(2, 0)
if rcv, err := NewDecimalFromUsage(dec); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected, rcv) {
t.Errorf("Expected %+v, received %+v", expected, rcv)
}
dec = "invalid_decimal_format"
expectedErr = "can't convert <invalid_decimal_format> to decimal"
if _, err := NewDecimalFromUsage(dec); err == nil || err.Error() != expectedErr {
t.Errorf("Expected %+v, received %+v", expectedErr, err)
}
dec = "1000"
expected = NewDecimal(1000, 0)
if rcv, err := NewDecimalFromUsage(dec); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected, rcv) {
t.Errorf("Expected %+v, received %+v", expected, rcv)
}
dec = "12m"
expected = NewDecimal(int64(12*time.Minute), 0)
if rcv, err := NewDecimalFromUsage(dec); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected, rcv) {
t.Errorf("Expected %+v, received %+v", expected, rcv)
}
dec = "12m10s"
expected = NewDecimal(int64(12*time.Minute+10*time.Second), 0)
if rcv, err := NewDecimalFromUsage(dec); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected, rcv) {
t.Errorf("Expected %+v, received %+v", expected, rcv)
}
dec = "12.44"
expected = NewDecimal(1244, 2)
if rcv, err := NewDecimalFromUsage(dec); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(expected, rcv) {
t.Errorf("Expected %+v, received %+v", expected, rcv)
}
dec = "12.44.5"
expectedErr = "can't convert <12.44.5> to decimal"
if _, err := NewDecimalFromUsage(dec); err == nil || err.Error() != expectedErr {
t.Errorf("Expected %+v, received %+v", expectedErr, err)
}
}
func TestDecimalNewDecimalFromString(t *testing.T) {
str := "123.4"
received, err := NewDecimalFromString(str)
if err != nil {
t.Error(err)
}
expected := &Decimal{decimal.New(1234, 1)}
if !reflect.DeepEqual(received, expected) {
t.Errorf("\nExpected: <%+v>, \nReceived: <%+v>", expected, received)
}
}
func TestDecimalNewDecimalFromStringErr(t *testing.T) {
str := "testString"
_, err := NewDecimalFromString(str)
expected := "can't convert <" + str + "> to decimal"
if err == nil || err.Error() != expected {
t.Errorf("\nExpected: <%+v>, \nReceived: <%+v>", expected, err)
}
}
func TestDivideBigWithReminder(t *testing.T) {
x := decimal.WithContext(DecimalContext).SetUint64(10)
y := decimal.WithContext(DecimalContext).SetUint64(5)
qExpected := decimal.WithContext(DecimalContext).SetUint64(2)
rExpected := decimal.WithContext(DecimalContext).SetUint64(0)
qReceived, rReceived := DivideBigWithReminder(x, y)
if !reflect.DeepEqual(qExpected, qReceived) {
t.Errorf("Expected divident <+%v> but received <+%v>", qExpected, qReceived)
} else if !reflect.DeepEqual(rExpected, rReceived) {
t.Errorf("Expected divident <+%v> but received <+%v>", rExpected, rReceived)
}
x = nil
qReceived, rReceived = DivideBigWithReminder(x, y)
qExpected = nil
rExpected = nil
if !reflect.DeepEqual(qExpected, qReceived) {
t.Errorf("Expected divident <+%v> but received <+%v>", qExpected, qReceived)
} else if !reflect.DeepEqual(rExpected, rReceived) {
t.Errorf("Expected divident <+%v> but received <+%v>", rExpected, rReceived)
}
x = decimal.WithContext(DecimalContext).SetUint64(10)
y = nil
qReceived, rReceived = DivideBigWithReminder(x, y)
qExpected = nil
rExpected = nil
if !reflect.DeepEqual(qExpected, qReceived) {
t.Errorf("Expected divident <+%v> but received <+%v>", qExpected, qReceived)
} else if !reflect.DeepEqual(rExpected, rReceived) {
t.Errorf("Expected divident <+%v> but received <+%v>", rExpected, rReceived)
}
}
func TestDecimalNewDecimalFromUsageEmptyStringCase(t *testing.T) {
exp := NewDecimal(0, 0)
if rcv, err := NewDecimalFromUsage(EmptyString); err != nil {
t.Error(err)
} else if rcv.Compare(exp) != 0 {
t.Errorf("expected: <%+v>, \nreceived: <%+v>", exp, rcv)
}
}
func TestDecimalFloat64(t *testing.T) {
d := NewDecimal(123, 2)
exp := 1.23
if rcv, ok := d.Float64(); !ok {
t.Error("expected ok to be true")
} else if rcv != exp {
t.Errorf("expected: <%+v>, \nreceived: <%+v>", exp, rcv)
}
}
func TestDecimalDuration(t *testing.T) {
d := NewDecimal(int64(3), 0)
rcv, ok := d.Duration()
if !ok {
t.Error("Cannot convert")
} else if rcv != time.Nanosecond*3 {
t.Errorf("Expected 3ns")
}
d = NewDecimal(999999999999999999, 5555555555555555555)
rcv, ok = d.Duration()
if ok {
t.Errorf("Cannot convert %v", rcv)
}
}
func TestMarshalUnmarshalNA(t *testing.T) {
mrsh, err := DecimalNaN.MarshalJSON()
if err != nil {
t.Error(err)
}
var dec2 Decimal
if err := dec2.UnmarshalJSON(mrsh); err != nil {
t.Error(err)
}
if dec2.Compare(DecimalNaN) != 0 {
t.Errorf("%v and %v are different", dec2, DecimalNaN)
}
}
func TestNewRoundingMode(t *testing.T) {
var tests = []struct {
rnd string
exp decimal.RoundingMode
}{
{"*toNearestEven", 0},
{"*toNearestAway", 1},
{"*toZero", 2},
{"*awayFromZero", 3},
{"*toNegativeInf", 4},
{"*toPositiveInf", 5},
{"*toNearestTowardZero", 6},
}
unsupp := "unsupported"
for _, e := range tests {
if rcv, err := NewRoundingMode(e.rnd); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(rcv, e.exp) {
t.Errorf("expected: <%v>, received: <%v>", e.exp, rcv)
}
}
expErr := "usupoorted rounding: <\"unsupported\">"
if _, err := NewRoundingMode(unsupp); err == nil || err.Error() != expErr {
t.Errorf("expected: <%+v>, received: <%+v>", expErr, err)
}
}
func TestNewRoundingModeToString(t *testing.T) {
var tests = []struct {
rnd decimal.RoundingMode
exp string
}{
{0, "*toNearestEven"},
{1, "*toNearestAway"},
{2, "*toZero"},
{3, "*awayFromZero"},
{4, "*toNegativeInf"},
{5, "*toPositiveInf"},
{6, "*toNearestTowardZero"},
{7, ""},
}
for _, e := range tests {
if rcv := RoundingModeToString(e.rnd); !reflect.DeepEqual(rcv, e.exp) {
t.Errorf("expected: <%v>, received: <%v>", e.exp, rcv)
}
}
}
func TestDivideDecimal(t *testing.T) {
var x *Decimal = NewDecimal(12, 0)
var y *Decimal = NewDecimal(2, 0)
exp := NewDecimal(6, 0)
if rcv := DivideDecimal(x, y); !reflect.DeepEqual(rcv, exp) {
t.Errorf("expected: <%+v>, received: <%+v>", exp, rcv)
}
}
func TestNewDecimalFromStringIgnoreError(t *testing.T) {
if rcv := NewDecimalFromStringIgnoreError("teststring"); rcv != nil {
t.Errorf("Expected <nil>, received <%+v>", rcv)
}
}