mirror of https://github.com/jackc/pgx.git
361 lines
16 KiB
Go
361 lines
16 KiB
Go
package numeric_test
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import (
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"fmt"
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"math/big"
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"math/rand"
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"reflect"
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"testing"
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shopspring "github.com/jackc/pgtype/ext/shopspring-numeric"
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"github.com/jackc/pgtype/testutil"
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"github.com/shopspring/decimal"
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"github.com/stretchr/testify/require"
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)
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func mustParseDecimal(t *testing.T, src string) decimal.Decimal {
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dec, err := decimal.NewFromString(src)
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if err != nil {
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t.Fatal(err)
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}
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return dec
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}
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func TestNumericNormalize(t *testing.T) {
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testutil.TestSuccessfulNormalizeEqFunc(t, []testutil.NormalizeTest{
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{
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SQL: "select '0'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "0"), Valid: true},
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},
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{
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SQL: "select '1'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true},
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},
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{
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SQL: "select '10.00'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "10.00"), Valid: true},
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},
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{
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SQL: "select '1e-3'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "0.001"), Valid: true},
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},
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{
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SQL: "select '-1'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true},
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},
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{
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SQL: "select '10000'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "10000"), Valid: true},
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},
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{
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SQL: "select '3.14'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "3.14"), Valid: true},
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},
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{
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SQL: "select '1.1'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1.1"), Valid: true},
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},
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{
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SQL: "select '100010001'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "100010001"), Valid: true},
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},
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{
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SQL: "select '100010001.0001'::numeric",
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Value: &shopspring.Numeric{Decimal: mustParseDecimal(t, "100010001.0001"), Valid: true},
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},
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{
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SQL: "select '4237234789234789289347892374324872138321894178943189043890124832108934.43219085471578891547854892438945012347981'::numeric",
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Value: &shopspring.Numeric{
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Decimal: mustParseDecimal(t, "4237234789234789289347892374324872138321894178943189043890124832108934.43219085471578891547854892438945012347981"),
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Valid: true,
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},
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},
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{
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SQL: "select '0.8925092023480223478923478978978937897879595901237890234789243679037419057877231734823098432903527585734549035904590854890345905434578345789347890402348952348905890489054234237489234987723894789234'::numeric",
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Value: &shopspring.Numeric{
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Decimal: mustParseDecimal(t, "0.8925092023480223478923478978978937897879595901237890234789243679037419057877231734823098432903527585734549035904590854890345905434578345789347890402348952348905890489054234237489234987723894789234"),
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Valid: true,
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},
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},
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{
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SQL: "select '0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000123'::numeric",
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Value: &shopspring.Numeric{
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Decimal: mustParseDecimal(t, "0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000123"),
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Valid: true,
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},
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},
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}, func(aa, bb interface{}) bool {
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a := aa.(shopspring.Numeric)
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b := bb.(shopspring.Numeric)
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return a.Valid == b.Valid && a.Decimal.Equal(b.Decimal)
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})
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}
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func TestNumericTranscode(t *testing.T) {
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testutil.TestSuccessfulTranscodeEqFunc(t, "numeric", []interface{}{
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "100000"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.1"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.01"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.001"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.0001"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.00001"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.000001"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "3.14"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.00000123"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.000000123"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.0000000123"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.00000000123"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001234567890123456789"), Valid: true},
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&shopspring.Numeric{Decimal: mustParseDecimal(t, "4309132809320932980457137401234890237489238912983572189348951289375283573984571892758234678903467889512893489128589347891272139.8489235871258912789347891235879148795891238915678189467128957812395781238579189025891238901583915890128973578957912385798125789012378905238905471598123758923478294374327894237892234"), Valid: true},
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&shopspring.Numeric{},
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}, func(aa, bb interface{}) bool {
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a := aa.(shopspring.Numeric)
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b := bb.(shopspring.Numeric)
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return a.Valid == b.Valid && a.Decimal.Equal(b.Decimal)
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})
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}
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func TestNumericTranscodeFuzz(t *testing.T) {
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r := rand.New(rand.NewSource(0))
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max := &big.Int{}
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max.SetString("9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999", 10)
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values := make([]interface{}, 0, 2000)
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for i := 0; i < 500; i++ {
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num := fmt.Sprintf("%s.%s", (&big.Int{}).Rand(r, max).String(), (&big.Int{}).Rand(r, max).String())
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negNum := "-" + num
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values = append(values, &shopspring.Numeric{Decimal: mustParseDecimal(t, num), Valid: true})
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values = append(values, &shopspring.Numeric{Decimal: mustParseDecimal(t, negNum), Valid: true})
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}
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testutil.TestSuccessfulTranscodeEqFunc(t, "numeric", values,
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func(aa, bb interface{}) bool {
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a := aa.(shopspring.Numeric)
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b := bb.(shopspring.Numeric)
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return a.Valid == b.Valid && a.Decimal.Equal(b.Decimal)
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})
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}
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func TestNumericSet(t *testing.T) {
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type _int8 int8
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successfulTests := []struct {
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source interface{}
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result *shopspring.Numeric
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}{
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{source: decimal.New(1, 0), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: decimal.NullDecimal{Valid: true, Decimal: decimal.New(1, 0)}, result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: decimal.NullDecimal{Valid: false}, result: &shopspring.Numeric{}},
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{source: float32(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: float64(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: int8(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: int16(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: int32(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: int64(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: int8(-1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}},
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{source: int16(-1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}},
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{source: int32(-1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}},
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{source: int64(-1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}},
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{source: uint8(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: uint16(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: uint32(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: uint64(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: "1", result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: _int8(1), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1"), Valid: true}},
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{source: float64(1000), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1000"), Valid: true}},
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{source: float64(1234), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1234"), Valid: true}},
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{source: float64(12345678900), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "12345678900"), Valid: true}},
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{source: float64(1.25), result: &shopspring.Numeric{Decimal: mustParseDecimal(t, "1.25"), Valid: true}},
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}
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for i, tt := range successfulTests {
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r := &shopspring.Numeric{}
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err := r.Set(tt.source)
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if err != nil {
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t.Errorf("%d: %v", i, err)
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}
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if !(r.Valid == tt.result.Valid && r.Decimal.Equal(tt.result.Decimal)) {
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t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
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}
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}
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}
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func TestNumericAssignTo(t *testing.T) {
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type _int8 int8
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var i8 int8
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var i16 int16
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var i32 int32
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var i64 int64
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var i int
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var ui8 uint8
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var ui16 uint16
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var ui32 uint32
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var ui64 uint64
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var ui uint
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var pi8 *int8
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var _i8 _int8
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var _pi8 *_int8
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var f32 float32
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var f64 float64
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var pf32 *float32
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var pf64 *float64
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var d decimal.Decimal
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var nd decimal.NullDecimal
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simpleTests := []struct {
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src *shopspring.Numeric
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dst interface{}
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expected interface{}
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}{
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &f32, expected: float32(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &f64, expected: float64(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "4.2"), Valid: true}, dst: &f32, expected: float32(4.2)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "4.2"), Valid: true}, dst: &f64, expected: float64(4.2)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &i16, expected: int16(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &i32, expected: int32(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &i64, expected: int64(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42000"), Valid: true}, dst: &i64, expected: int64(42000)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &i, expected: int(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &ui8, expected: uint8(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &ui16, expected: uint16(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &ui32, expected: uint32(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &ui64, expected: uint64(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &ui, expected: uint(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &_i8, expected: _int8(42)},
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{src: &shopspring.Numeric{}, dst: &pi8, expected: ((*int8)(nil))},
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{src: &shopspring.Numeric{}, dst: &_pi8, expected: ((*_int8)(nil))},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &d, expected: decimal.New(42, 0)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42000"), Valid: true}, dst: &d, expected: decimal.New(42, 3)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "0.042"), Valid: true}, dst: &d, expected: decimal.New(42, -3)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &nd, expected: decimal.NullDecimal{Valid: true, Decimal: decimal.New(42, 0)}},
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{src: &shopspring.Numeric{}, dst: &nd, expected: decimal.NullDecimal{Valid: false}},
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}
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for i, tt := range simpleTests {
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// Zero out the destination variable
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reflect.ValueOf(tt.dst).Elem().Set(reflect.Zero(reflect.TypeOf(tt.dst).Elem()))
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err := tt.src.AssignTo(tt.dst)
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if err != nil {
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t.Errorf("%d: %v", i, err)
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}
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// Need to specially handle Decimal or NullDecimal methods so we can use their Equal method. Without this
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// we end up checking reference equality on the *big.Int they contain.
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switch dst := tt.dst.(type) {
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case *decimal.Decimal:
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if !dst.Equal(tt.expected.(decimal.Decimal)) {
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t.Errorf("%d: expected %v to assign %v, but result was %v", i, tt.src, tt.expected, d)
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}
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case *decimal.NullDecimal:
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expected := tt.expected.(decimal.NullDecimal)
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if dst.Valid != expected.Valid {
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t.Errorf("%d: expected %v to assign NullDecimal.Valid = %v, but result was NullDecimal.Valid = %v", i, tt.src, expected.Valid, dst.Valid)
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}
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if !dst.Decimal.Equal(expected.Decimal) {
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t.Errorf("%d: expected %v to assign NullDecimal.Decimal = %v, but result was NullDecimal.Decimal = %v", i, tt.src, expected.Decimal, dst.Decimal)
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}
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default:
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if dst := reflect.ValueOf(tt.dst).Elem().Interface(); dst != tt.expected {
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t.Errorf("%d: expected %v to assign %v, but result was %v", i, tt.src, tt.expected, dst)
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}
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}
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}
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pointerAllocTests := []struct {
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src *shopspring.Numeric
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dst interface{}
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expected interface{}
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}{
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &pf32, expected: float32(42)},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "42"), Valid: true}, dst: &pf64, expected: float64(42)},
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}
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for i, tt := range pointerAllocTests {
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err := tt.src.AssignTo(tt.dst)
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if err != nil {
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t.Errorf("%d: %v", i, err)
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}
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if dst := reflect.ValueOf(tt.dst).Elem().Elem().Interface(); dst != tt.expected {
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t.Errorf("%d: expected %v to assign %v, but result was %v", i, tt.src, tt.expected, dst)
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}
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}
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errorTests := []struct {
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src *shopspring.Numeric
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dst interface{}
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}{
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "150"), Valid: true}, dst: &i8},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "40000"), Valid: true}, dst: &i16},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}, dst: &ui8},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}, dst: &ui16},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}, dst: &ui32},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}, dst: &ui64},
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{src: &shopspring.Numeric{Decimal: mustParseDecimal(t, "-1"), Valid: true}, dst: &ui},
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{src: &shopspring.Numeric{}, dst: &i32},
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}
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for i, tt := range errorTests {
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err := tt.src.AssignTo(tt.dst)
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if err == nil {
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t.Errorf("%d: expected error but none was returned (%v -> %v)", i, tt.src, tt.dst)
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}
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}
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}
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func BenchmarkDecode(b *testing.B) {
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benchmarks := []struct {
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name string
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numberStr string
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}{
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{"Zero", "0"},
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{"Small", "12345"},
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{"Medium", "12345.12345"},
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{"Large", "123457890.1234567890"},
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{"Huge", "123457890123457890123457890.1234567890123457890123457890"},
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}
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for _, bm := range benchmarks {
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src := &shopspring.Numeric{}
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err := src.Set(bm.numberStr)
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require.NoError(b, err)
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textFormat, err := src.EncodeText(nil, nil)
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require.NoError(b, err)
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binaryFormat, err := src.EncodeBinary(nil, nil)
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require.NoError(b, err)
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b.Run(fmt.Sprintf("%s-Text", bm.name), func(b *testing.B) {
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dst := &shopspring.Numeric{}
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for i := 0; i < b.N; i++ {
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err := dst.DecodeText(nil, textFormat)
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if err != nil {
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b.Fatal(err)
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}
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}
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})
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b.Run(fmt.Sprintf("%s-Binary", bm.name), func(b *testing.B) {
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dst := &shopspring.Numeric{}
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for i := 0; i < b.N; i++ {
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err := dst.DecodeBinary(nil, binaryFormat)
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if err != nil {
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b.Fatal(err)
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}
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}
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})
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}
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}
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