clickhouse-go-mock/driver.go

// 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 mockhouse

import (
	"fmt"
	"sync"

	"github.com/ClickHouse/clickhouse-go/v2"
	"github.com/DATA-DOG/go-sqlmock"
)

var clickHousePool *mockClickHouseDriver

type mockClickHouseDriver struct {
	counter int
	conns   map[string]*clickhousemock
	sync.Mutex
}

func init() {
	clickHousePool = &mockClickHouseDriver{
		conns: make(map[string]*clickhousemock),
	}
}

// NewClickHouseNative creates clickhousemock database mock to manage expectations.
func NewClickHouseNative(options *clickhouse.Options) (*clickhousemock, error) {
	return NewClickHouseWithQueryMatcher(options, sqlmock.QueryMatcherEqual)
}

func NewClickHouseWithQueryMatcher(
	options *clickhouse.Options,
	queryMatcher sqlmock.QueryMatcher,
) (*clickhousemock, error) {
	clickHousePool.Lock()
	dsn := fmt.Sprintf("clickhousemock_db_%d", clickHousePool.counter)
	clickHousePool.counter++

	cmock := &clickhousemock{dsn: dsn, drv: clickHousePool, ordered: true, queryMatcher: queryMatcher}
	clickHousePool.conns[dsn] = cmock
	clickHousePool.Unlock()

	return cmock.open(options)
}