forked from mirror/go.uuid
Moved database support into `sql.go`.
This commit is contained in:
Maxim Bublis
parent
b27323f250
commit
2558856ae9
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@ -0,0 +1,78 @@
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// Copyright (C) 2013-2018 by Maxim Bublis <b@codemonkey.ru>
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package uuid
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import (
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"database/sql/driver"
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"fmt"
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)
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// Value implements the driver.Valuer interface.
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func (u UUID) Value() (driver.Value, error) {
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return u.String(), nil
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}
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// Scan implements the sql.Scanner interface.
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// A 16-byte slice is handled by UnmarshalBinary, while
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// a longer byte slice or a string is handled by UnmarshalText.
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func (u *UUID) Scan(src interface{}) error {
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switch src := src.(type) {
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case []byte:
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if len(src) == Size {
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return u.UnmarshalBinary(src)
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}
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return u.UnmarshalText(src)
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case string:
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return u.UnmarshalText([]byte(src))
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}
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return fmt.Errorf("uuid: cannot convert %T to UUID", src)
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}
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// NullUUID can be used with the standard sql package to represent a
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// UUID value that can be NULL in the database
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type NullUUID struct {
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UUID UUID
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Valid bool
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}
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// Value implements the driver.Valuer interface.
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func (u NullUUID) Value() (driver.Value, error) {
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if !u.Valid {
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return nil, nil
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}
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// Delegate to UUID Value function
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return u.UUID.Value()
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}
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// Scan implements the sql.Scanner interface.
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func (u *NullUUID) Scan(src interface{}) error {
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if src == nil {
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u.UUID, u.Valid = Nil, false
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return nil
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}
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// Delegate to UUID Scan function
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u.Valid = true
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return u.UUID.Scan(src)
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}
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@ -0,0 +1,189 @@
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// Copyright (C) 2013-2018 by Maxim Bublis <b@codemonkey.ru>
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package uuid
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import "testing"
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func TestValue(t *testing.T) {
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u, err := FromString("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
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if err != nil {
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t.Errorf("Error parsing UUID from string: %s", err)
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}
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val, err := u.Value()
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if err != nil {
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t.Errorf("Error getting UUID value: %s", err)
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}
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if val != u.String() {
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t.Errorf("Wrong value returned, should be equal: %s and %s", val, u)
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}
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}
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func TestValueNil(t *testing.T) {
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u := UUID{}
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val, err := u.Value()
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if err != nil {
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t.Errorf("Error getting UUID value: %s", err)
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}
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if val != Nil.String() {
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t.Errorf("Wrong value returned, should be equal to UUID.Nil: %s", val)
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}
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}
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func TestNullUUIDValueNil(t *testing.T) {
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u := NullUUID{}
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val, err := u.Value()
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if err != nil {
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t.Errorf("Error getting UUID value: %s", err)
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}
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if val != nil {
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t.Errorf("Wrong value returned, should be nil: %s", val)
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}
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}
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func TestScanBinary(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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b1 := []byte{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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u1 := UUID{}
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err := u1.Scan(b1)
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if err != nil {
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t.Errorf("Error unmarshaling UUID: %s", err)
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}
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if !Equal(u, u1) {
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t.Errorf("UUIDs should be equal: %s and %s", u, u1)
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}
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b2 := []byte{}
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u2 := UUID{}
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err = u2.Scan(b2)
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if err == nil {
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t.Errorf("Should return error unmarshalling from empty byte slice, got %s", err)
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}
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}
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func TestScanString(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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s1 := "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
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u1 := UUID{}
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err := u1.Scan(s1)
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if err != nil {
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t.Errorf("Error unmarshaling UUID: %s", err)
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}
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if !Equal(u, u1) {
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t.Errorf("UUIDs should be equal: %s and %s", u, u1)
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}
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s2 := ""
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u2 := UUID{}
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err = u2.Scan(s2)
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if err == nil {
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t.Errorf("Should return error trying to unmarshal from empty string")
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}
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}
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func TestScanText(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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b1 := []byte("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
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u1 := UUID{}
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err := u1.Scan(b1)
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if err != nil {
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t.Errorf("Error unmarshaling UUID: %s", err)
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}
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if !Equal(u, u1) {
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t.Errorf("UUIDs should be equal: %s and %s", u, u1)
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}
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b2 := []byte("")
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u2 := UUID{}
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err = u2.Scan(b2)
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if err == nil {
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t.Errorf("Should return error trying to unmarshal from empty string")
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}
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}
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func TestScanUnsupported(t *testing.T) {
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u := UUID{}
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err := u.Scan(true)
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if err == nil {
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t.Errorf("Should return error trying to unmarshal from bool")
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}
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}
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func TestScanNil(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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err := u.Scan(nil)
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if err == nil {
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t.Errorf("Error UUID shouldn't allow unmarshalling from nil")
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}
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}
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func TestNullUUIDScanValid(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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s1 := "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
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u1 := NullUUID{}
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err := u1.Scan(s1)
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if err != nil {
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t.Errorf("Error unmarshaling NullUUID: %s", err)
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}
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if !u1.Valid {
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t.Errorf("NullUUID should be valid")
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}
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if !Equal(u, u1.UUID) {
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t.Errorf("UUIDs should be equal: %s and %s", u, u1.UUID)
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}
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}
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func TestNullUUIDScanNil(t *testing.T) {
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u := NullUUID{UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}, true}
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err := u.Scan(nil)
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if err != nil {
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t.Errorf("Error unmarshaling NullUUID: %s", err)
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}
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if u.Valid {
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t.Errorf("NullUUID should not be valid")
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}
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if !Equal(u.UUID, Nil) {
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t.Errorf("NullUUID value should be equal to Nil: %v", u)
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}
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}
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54
uuid.go
54
uuid.go
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@ -26,7 +26,6 @@ package uuid
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import (
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"bytes"
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"database/sql/driver"
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"encoding/hex"
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"fmt"
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)
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@ -62,13 +61,6 @@ var (
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// described in RFC 4122.
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type UUID [Size]byte
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// NullUUID can be used with the standard sql package to represent a
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// UUID value that can be NULL in the database
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type NullUUID struct {
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UUID UUID
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Valid bool
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}
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// Nil is special form of UUID that is specified to have all
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// 128 bits set to zero.
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var Nil = UUID{}
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@ -231,7 +223,7 @@ func (u *UUID) decodeBraced(t []byte) (err error) {
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return fmt.Errorf("uuid: incorrect UUID format %s", t)
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}
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return u.decodePlain(t[1:l-1])
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return u.decodePlain(t[1 : l-1])
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}
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// decodeURN decodes UUID string in format
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@ -281,50 +273,6 @@ func (u *UUID) UnmarshalBinary(data []byte) (err error) {
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return
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}
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// Value implements the driver.Valuer interface.
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func (u UUID) Value() (driver.Value, error) {
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return u.String(), nil
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}
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// Scan implements the sql.Scanner interface.
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// A 16-byte slice is handled by UnmarshalBinary, while
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// a longer byte slice or a string is handled by UnmarshalText.
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func (u *UUID) Scan(src interface{}) error {
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switch src := src.(type) {
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case []byte:
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if len(src) == Size {
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return u.UnmarshalBinary(src)
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}
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return u.UnmarshalText(src)
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case string:
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return u.UnmarshalText([]byte(src))
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}
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return fmt.Errorf("uuid: cannot convert %T to UUID", src)
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}
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// Value implements the driver.Valuer interface.
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func (u NullUUID) Value() (driver.Value, error) {
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if !u.Valid {
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return nil, nil
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}
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// Delegate to UUID Value function
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return u.UUID.Value()
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}
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// Scan implements the sql.Scanner interface.
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func (u *NullUUID) Scan(src interface{}) error {
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if src == nil {
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u.UUID, u.Valid = Nil, false
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return nil
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}
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// Delegate to UUID Scan function
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u.Valid = true
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return u.UUID.Scan(src)
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}
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// FromBytes returns UUID converted from raw byte slice input.
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// It will return error if the slice isn't 16 bytes long.
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func FromBytes(input []byte) (u UUID, err error) {
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165
uuid_test.go
165
uuid_test.go
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@ -331,168 +331,3 @@ func TestUnmarshalText(t *testing.T) {
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t.Errorf("Should return error trying to unmarshal from empty string")
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}
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}
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func TestValue(t *testing.T) {
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u, err := FromString("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
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if err != nil {
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t.Errorf("Error parsing UUID from string: %s", err)
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}
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val, err := u.Value()
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if err != nil {
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t.Errorf("Error getting UUID value: %s", err)
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}
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if val != u.String() {
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t.Errorf("Wrong value returned, should be equal: %s and %s", val, u)
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}
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}
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func TestValueNil(t *testing.T) {
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u := UUID{}
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val, err := u.Value()
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if err != nil {
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t.Errorf("Error getting UUID value: %s", err)
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}
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if val != Nil.String() {
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t.Errorf("Wrong value returned, should be equal to UUID.Nil: %s", val)
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}
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}
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func TestNullUUIDValueNil(t *testing.T) {
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u := NullUUID{}
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val, err := u.Value()
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if err != nil {
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t.Errorf("Error getting UUID value: %s", err)
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}
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if val != nil {
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t.Errorf("Wrong value returned, should be nil: %s", val)
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}
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}
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func TestScanBinary(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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b1 := []byte{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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u1 := UUID{}
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err := u1.Scan(b1)
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if err != nil {
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t.Errorf("Error unmarshaling UUID: %s", err)
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}
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if !Equal(u, u1) {
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t.Errorf("UUIDs should be equal: %s and %s", u, u1)
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}
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b2 := []byte{}
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u2 := UUID{}
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err = u2.Scan(b2)
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if err == nil {
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t.Errorf("Should return error unmarshalling from empty byte slice, got %s", err)
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}
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}
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func TestScanString(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
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s1 := "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
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u1 := UUID{}
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err := u1.Scan(s1)
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if err != nil {
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t.Errorf("Error unmarshaling UUID: %s", err)
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}
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if !Equal(u, u1) {
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t.Errorf("UUIDs should be equal: %s and %s", u, u1)
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}
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|
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s2 := ""
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u2 := UUID{}
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err = u2.Scan(s2)
|
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if err == nil {
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t.Errorf("Should return error trying to unmarshal from empty string")
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}
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}
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func TestScanText(t *testing.T) {
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u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
|
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b1 := []byte("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
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|
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u1 := UUID{}
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err := u1.Scan(b1)
|
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if err != nil {
|
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t.Errorf("Error unmarshaling UUID: %s", err)
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}
|
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|
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if !Equal(u, u1) {
|
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t.Errorf("UUIDs should be equal: %s and %s", u, u1)
|
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}
|
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|
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b2 := []byte("")
|
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u2 := UUID{}
|
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|
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err = u2.Scan(b2)
|
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if err == nil {
|
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t.Errorf("Should return error trying to unmarshal from empty string")
|
||||
}
|
||||
}
|
||||
|
||||
func TestScanUnsupported(t *testing.T) {
|
||||
u := UUID{}
|
||||
|
||||
err := u.Scan(true)
|
||||
if err == nil {
|
||||
t.Errorf("Should return error trying to unmarshal from bool")
|
||||
}
|
||||
}
|
||||
|
||||
func TestScanNil(t *testing.T) {
|
||||
u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
|
||||
|
||||
err := u.Scan(nil)
|
||||
if err == nil {
|
||||
t.Errorf("Error UUID shouldn't allow unmarshalling from nil")
|
||||
}
|
||||
}
|
||||
|
||||
func TestNullUUIDScanValid(t *testing.T) {
|
||||
u := UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}
|
||||
s1 := "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
|
||||
|
||||
u1 := NullUUID{}
|
||||
err := u1.Scan(s1)
|
||||
if err != nil {
|
||||
t.Errorf("Error unmarshaling NullUUID: %s", err)
|
||||
}
|
||||
|
||||
if !u1.Valid {
|
||||
t.Errorf("NullUUID should be valid")
|
||||
}
|
||||
|
||||
if !Equal(u, u1.UUID) {
|
||||
t.Errorf("UUIDs should be equal: %s and %s", u, u1.UUID)
|
||||
}
|
||||
}
|
||||
|
||||
func TestNullUUIDScanNil(t *testing.T) {
|
||||
u := NullUUID{UUID{0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8}, true}
|
||||
|
||||
err := u.Scan(nil)
|
||||
if err != nil {
|
||||
t.Errorf("Error unmarshaling NullUUID: %s", err)
|
||||
}
|
||||
|
||||
if u.Valid {
|
||||
t.Errorf("NullUUID should not be valid")
|
||||
}
|
||||
|
||||
if !Equal(u.UUID, Nil) {
|
||||
t.Errorf("NullUUID value should be equal to Nil: %v", u)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue