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// Copyright 2018 Google LLC
//
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"errors"
"fmt"
"reflect"
"testing"
"google.golang.org/protobuf/proto"
anypb "google.golang.org/protobuf/types/known/anypb"
structpb "google.golang.org/protobuf/types/known/structpb"
)
func TestNullConvertToNative(t *testing.T) {
tests := []struct {
goType reflect.Type
out any
err error
}{
{
goType: jsonValueType,
out: structpb.NewNullValue(),
},
{
goType: jsonNullType,
out: structpb.NullValue_NULL_VALUE,
},
{
goType: anyValueType,
out: testPackAny(t, structpb.NewNullValue()),
},
{
goType: reflect.TypeOf(NullValue),
out: NullValue,
},
{goType: boolWrapperType},
{goType: byteWrapperType},
{goType: doubleWrapperType},
{goType: floatWrapperType},
{goType: int32WrapperType},
{goType: int64WrapperType},
{goType: stringWrapperType},
{goType: uint32WrapperType},
{goType: uint64WrapperType},
{
goType: reflect.TypeOf(1),
err: errors.New("type conversion error from 'null_type' to 'int'"),
},
}
for i, tst := range tests {
tc := tst
t.Run(fmt.Sprintf("[%d]", i), func(t *testing.T) {
out, err := NullValue.ConvertToNative(tc.goType)
if err != nil {
if tc.err == nil {
t.Fatalf("NullValue.ConvertToType(%v) failed: %v", tc.goType, err)
}
if tc.err.Error() != err.Error() {
t.Errorf("NullValue.ConvertToType(%v) got error %v, wanted error %v", tc.goType, err, tc.err)
}
return
}
pbMsg, isPB := out.(proto.Message)
if (isPB && !proto.Equal(pbMsg, tc.out.(proto.Message))) || (!isPB && out != tc.out) {
t.Errorf("NullValue.ConvertToNative(%v) got %v, wanted %v", tc.goType, pbMsg, tc.out)
}
})
}
}
func TestNullConvertToType(t *testing.T) {
if !NullValue.ConvertToType(NullType).Equal(NullValue).(Bool) {
t.Error("Failed to get NullType of NullValue.")
}
if !NullValue.ConvertToType(StringType).Equal(String("null")).(Bool) {
t.Error("Failed to get StringType of NullValue.")
}
if !NullValue.ConvertToType(TypeType).Equal(NullType).(Bool) {
t.Error("Failed to convert NullValue to type.")
}
}
func TestNullEqual(t *testing.T) {
if !NullValue.Equal(NullValue).(Bool) {
t.Error("NullValue does not equal to itself.")
}
}
func TestNullIsZeroValue(t *testing.T) {
if !NullValue.IsZeroValue() {
t.Error("NullValue.IsZeroValue() returned false, wanted true")
}
}
func TestNullType(t *testing.T) {
if NullValue.Type() != NullType {
t.Error("NullValue gets incorrect type.")
}
}
func TestNullValue(t *testing.T) {
if NullValue.Value() != structpb.NullValue_NULL_VALUE {
t.Error("NullValue gets incorrect value.")
}
}
func testPackAny(t *testing.T, val proto.Message) *anypb.Any {
t.Helper()
out, err := anypb.New(val)
if err != nil {
t.Fatalf("anypb.New(%v) failed: %v", val, err)
}
return out
}
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