content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to you 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 org.apache.calcite.test;
  
  import org.apache.calcite.sql.parser.SqlParserFixture;
  import org.apache.calcite.sql.parser.SqlParserTest;
  import org.apache.calcite.sql.test.SqlOperatorFixture;
  
  /** Fluent test fixtures for typical Calcite tests (parser, validator,
   * sql-to-rel and rel-rules) that can easily be used in dependent projects. */
  public class Fixtures {
    private Fixtures() {}
  
    /** Creates a fixture for parser tests. */
    public static SqlParserFixture forParser() {
      return new SqlParserTest().fixture();
    }
  
    /** Creates a fixture for validation tests. */
    public static SqlValidatorFixture forValidator() {
      return SqlValidatorTestCase.FIXTURE;
    }
  
    /** Creates a fixture for SQL-to-Rel tests. */
    public static SqlToRelFixture forSqlToRel() {
      return SqlToRelFixture.DEFAULT;
    }
  
    /** Creates a fixture for rule tests. */
    public static RelOptFixture forRules() {
      return RelOptFixture.DEFAULT;
    }
  
    /** Creates a fixture for operator tests. */
    public static SqlOperatorFixture forOperators(boolean execute) {
      return execute
          ? SqlOperatorFixtureImpl.DEFAULT.withTester(t -> SqlOperatorTest.TESTER)
          : SqlOperatorFixtureImpl.DEFAULT;
    }
  
    /** Creates a fixture for metadata tests. */
    public static RelMetadataFixture forMetadata() {
      return RelMetadataFixture.DEFAULT;
    }
  }
  