featurebase/mock/mock.go

// Copyright 2017 Pilosa Corp.
//
// 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 mock

import "sync"

type ReadCloser struct {
	ReadFunc  func(p []byte) (int, error)
	CloseFunc func() error
	once      sync.Once
}

func (rc *ReadCloser) Read(p []byte) (int, error) {
	return rc.ReadFunc(p)
}

func (rc *ReadCloser) Close() error {
	var err error = nil
	rc.once.Do(func() {
		err = rc.CloseFunc()
	})
	return err
}