fix(presto-driver): optimize testConnection() to issue simple select …

…1 test instead of heavy show catalogs

packages/cubejs-prestodb-driver/src/PrestoDriver.ts

@@ -103,7 +103,7 @@ export class PrestoDriver extends BaseDriver implements DriverInterface {
   }
 
   public testConnection() {
-    const query = SqlString.format('show catalogs like ?', [`%${this.catalog}%`]);
+    const query = ('SELECT 1');
 
     return (<Promise<any[]>> this.queryPromised(query, false))
       .then(catalogs => {
@@ -230,7 +230,7 @@ export class PrestoDriver extends BaseDriver implements DriverInterface {
     if (!this.config.exportBucket) {
       throw new Error('Export bucket is not configured.');
     }
-    
+
     if (!SUPPORTED_BUCKET_TYPES.includes(this.config.bucketType as string)) {
       throw new Error(`Unsupported export bucket type: ${
         this.config.bucketType
@@ -240,7 +240,7 @@ export class PrestoDriver extends BaseDriver implements DriverInterface {
     const types = options.query
       ? await this.unloadWithSql(tableName, options.query.sql, options.query.params)
       : await this.unloadWithTable(tableName);
-      
+
     const csvFile = await this.getCsvFiles(tableName);
 
     return {
@@ -287,7 +287,7 @@ export class PrestoDriver extends BaseDriver implements DriverInterface {
 
     const { bucketType, exportBucket } = this.config;
     const types = await this.queryColumnTypes(params.typeSql, params.typeParams);
-    
+
     const { schema, tableName } = this.splitTableFullName(params.tableFullName);
     const tableWithCatalogAndSchema = `${this.config.catalog}.${schema}.${tableName}`;
     const protocol = bucketType === 'gcs' ? 'gs' : bucketType;