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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package bsoncodec
import (
"fmt"
"reflect"
"testing"
"time"
"go.mongodb.org/mongo-driver/bson/bsonrw"
"go.mongodb.org/mongo-driver/bson/bsontype"
"go.mongodb.org/mongo-driver/bson/primitive"
)
func ExampleValueEncoder() {
var _ ValueEncoderFunc = func(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
if val.Kind() != reflect.String {
return ValueEncoderError{Name: "StringEncodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
}
return vw.WriteString(val.String())
}
}
func ExampleValueDecoder() {
var _ ValueDecoderFunc = func(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
if !val.CanSet() || val.Kind() != reflect.String {
return ValueDecoderError{Name: "StringDecodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
}
if vr.Type() != bsontype.String {
return fmt.Errorf("cannot decode %v into a string type", vr.Type())
}
str, err := vr.ReadString()
if err != nil {
return err
}
val.SetString(str)
return nil
}
}
func noerr(t *testing.T, err error) {
if err != nil {
t.Helper()
t.Errorf("Unexpected error: (%T)%v", err, err)
t.FailNow()
}
}
func compareTime(t1, t2 time.Time) bool {
if t1.Location() != t2.Location() {
return false
}
return t1.Equal(t2)
}
func compareErrors(err1, err2 error) bool {
if err1 == nil && err2 == nil {
return true
}
if err1 == nil || err2 == nil {
return false
}
if err1.Error() != err2.Error() {
return false
}
return true
}
func compareDecimal128(d1, d2 primitive.Decimal128) bool {
d1H, d1L := d1.GetBytes()
d2H, d2L := d2.GetBytes()
if d1H != d2H {
return false
}
if d1L != d2L {
return false
}
return true
}
type noPrivateFields struct {
a string
}
func compareNoPrivateFields(npf1, npf2 noPrivateFields) bool {
return npf1.a != npf2.a // We don't want these to be equal
}
type zeroTest struct {
reportZero bool
}
func (z zeroTest) IsZero() bool { return z.reportZero }
func compareZeroTest(_, _ zeroTest) bool { return true }
type nonZeroer struct {
value bool
}
type llCodec struct {
t *testing.T
decodeval interface{}
encodeval interface{}
err error
}
func (llc *llCodec) EncodeValue(_ EncodeContext, _ bsonrw.ValueWriter, i interface{}) error {
if llc.err != nil {
return llc.err
}
llc.encodeval = i
return nil
}
func (llc *llCodec) DecodeValue(_ DecodeContext, _ bsonrw.ValueReader, val reflect.Value) error {
if llc.err != nil {
return llc.err
}
if !reflect.TypeOf(llc.decodeval).AssignableTo(val.Type()) {
llc.t.Errorf("decodeval must be assignable to val provided to DecodeValue, but is not. decodeval %T; val %T", llc.decodeval, val)
return nil
}
val.Set(reflect.ValueOf(llc.decodeval))
return nil
}
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