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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
package graphson
import (
"errors"
"fmt"
"reflect"
"testing"
jsoniter "github.com/json-iterator/go"
"github.com/modern-go/reflect2"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
)
func TestMarshalerEncode(t *testing.T) {
want := []byte(`{"@type": "g:Int32", "@value": 42}`)
m := &mocker{}
call := m.On("MarshalGraphson").Return(want, nil)
defer m.AssertExpectations(t)
tests := []interface{}{m, &m, func() *Marshaler { marshaler := Marshaler(m); return &marshaler }(), Marshaler(nil)}
call.Times(len(tests) - 1)
for _, tc := range tests {
tc := tc
t.Run(fmt.Sprintf("%T", tc), func(t *testing.T) {
got, err := Marshal(tc)
assert.NoError(t, err)
if !reflect2.IsNil(tc) {
assert.Equal(t, want, got)
} else {
assert.Equal(t, []byte("null"), got)
}
})
}
}
func TestMarshalerError(t *testing.T) {
errStr := "marshaler error"
m := &mocker{}
m.On("MarshalGraphson").Return(nil, errors.New(errStr)).Once()
defer m.AssertExpectations(t)
_, err := Marshal(m)
assert.Error(t, err)
assert.Contains(t, err.Error(), errStr)
}
func TestBadMarshaler(t *testing.T) {
m := &mocker{}
m.On("MarshalGraphson").Return([]byte(`{"@type": "g:Int32", "@value":`), nil).Once()
defer m.AssertExpectations(t)
_, err := Marshal(m)
assert.Error(t, err)
}
func TestUnmarshalerDecode(t *testing.T) {
data := `{"@type": "g:UUID", "@value": "cb682578-9d92-4499-9ebc-5c6aa73c5397"}`
var value string
m := &mocker{}
m.On("UnmarshalGraphson", mock.Anything).
Run(func(args mock.Arguments) {
data := args.Get(0).([]byte)
value = jsoniter.Get(data, "@value").ToString()
}).
Return(nil).
Once()
defer m.AssertExpectations(t)
err := UnmarshalFromString(data, m)
require.NoError(t, err)
assert.Equal(t, "cb682578-9d92-4499-9ebc-5c6aa73c5397", value)
}
func TestUnmarshalerError(t *testing.T) {
errStr := "unmarshaler error"
m := &mocker{}
m.On("UnmarshalGraphson", mock.Anything).Return(errors.New(errStr)).Once()
defer m.AssertExpectations(t)
err := Unmarshal([]byte(`{}`), m)
require.Error(t, err)
assert.Contains(t, err.Error(),
fmt.Sprintf("graphson: error calling UnmarshalGraphson for type %s: %s",
reflect.TypeOf(m), errStr,
),
)
}
func TestUnmarshalBadInput(t *testing.T) {
m := &mocker{}
defer m.AssertExpectations(t)
err := UnmarshalFromString(`{"@type"}`, m)
assert.Error(t, err)
}
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