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.beam.sdk.extensions.sql;
  
  import static org.junit.Assert.assertThrows;
  
  import java.io.Serializable;
  import java.util.Arrays;
  import org.apache.beam.sdk.extensions.sql.impl.BeamSqlEnv;
  import org.apache.beam.sdk.extensions.sql.impl.ParseException;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.function.ThrowingRunnable;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  import org.junit.runners.Parameterized.Parameters;
  
  /**
   * Examples of simple identifiers that Calcite is unable to parse.
   *
   * <p>Not an exhaustive list.
   */
  @RunWith(Parameterized.class)
  public class CalciteCannotParseSimpleIdentifiersTest implements Serializable {
  
    @Rule public final transient TestPipeline pipeline = TestPipeline.create();
    private final String input;
  
    @Parameters(name = "{0}")
    public static Iterable<Object> data() {
      return Arrays.asList(
          new Object[] {
            "field id",
            "field\nid",
            "`field\nid`",
            "field`id",
            "field\\id",
            "field``id",
            "field\bid",
            "field=id",
            "field+id",
            "field{id}",
            "field.id",
            "field\r_id",
            "`field\r_id`"
          });
    }
  
    public CalciteCannotParseSimpleIdentifiersTest(String input) {
      this.input = input;
    }
  
    @Test
    public void testFailsToParseAlias() {
      assertThrows(ParseException.class, attemptParse(input));
    }
  
    private ThrowingRunnable attemptParse(String alias) {
      return () -> BeamSqlEnv.inMemory().isDdl(String.format("SELECT 321 AS %s", alias));
    }
  }
  