// Copyright 2020 PingCAP, Inc.
//
// 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 fn

import (
	"errors"
	"net/http"
	"testing"

	"github.com/stretchr/testify/require"
)

var errTest = errors.New("test")

type withError struct {
	err error
}

func (w *withError) Error() string {
	return w.err.Error()
}

func (w *withError) Unwrap() error {
	return w.err
}

// TestWithError test UnwrapErrorStatusCode method
func TestWithError(t *testing.T) {
	var err error = &withError{
		err: ErrorWithStatusCode(errTest, http.StatusInternalServerError),
	}
	code, ok := UnwrapErrorStatusCode(err)
	require.True(t, ok)
	require.Equal(t, http.StatusInternalServerError, code)
}

// TestOriginError test ErrorWithStatusCode Unwrap
func TestOriginError(t *testing.T) {
	err := ErrorWithStatusCode(errTest, http.StatusInternalServerError)
	require.Equal(t, errTest, Unwrap(err))
}
