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.meta.provider.datacatalog;
  
  import static org.junit.Assert.assertEquals;
  
  import java.util.Arrays;
  import java.util.List;
  import org.junit.Test;
  
  /** Unit tests for {@link ZetaSqlIdUtils}. */
  public class ZetaSqlIdUtilsTest {
  
    @Test
    public void testHandlesSimpleIds() {
      List<String> id = Arrays.asList("aaa", "BbB", "zAzzz00");
      assertEquals("aaa.BbB.zAzzz00", ZetaSqlIdUtils.escapeAndJoin(id));
    }
  
    @Test
    public void testHandlesMixedIds() {
      List<String> id = Arrays.asList("aaa", "Bb---B", "zAzzz00");
      assertEquals("aaa.`Bb---B`.zAzzz00", ZetaSqlIdUtils.escapeAndJoin(id));
    }
  
    @Test
    public void testHandlesSpecialChars() {
      List<String> id = Arrays.asList("a\\a", "b`b", "c'c", "d\"d", "e?e");
      assertEquals("`a\\\\a`.`b\\`b`.`c\\'c`.`d\\\"d`.`e\\?e`", ZetaSqlIdUtils.escapeAndJoin(id));
    }
  
    @Test
    public void testHandlesSpecialCharsInOnePart() {
      List<String> id = Arrays.asList("a\\ab`bc'cd\"de?e");
      assertEquals("`a\\\\ab\\`bc\\'cd\\\"de\\?e`", ZetaSqlIdUtils.escapeAndJoin(id));
    }
  
    @Test
    public void testHandlesWhiteSpaces() {
      List<String> id = Arrays.asList("a\na", "b\tb", "c\rc", "d\fd");
      assertEquals("`a\\na`.`b\\tb`.`c\\rc`.`d\\fd`", ZetaSqlIdUtils.escapeAndJoin(id));
    }
  
    @Test
    public void testHandlesWhiteSpacesInOnePart() {
      List<String> id = Arrays.asList("a\nab\tbc\rcd\fd");
      assertEquals("`a\\nab\\tbc\\rcd\\fd`", ZetaSqlIdUtils.escapeAndJoin(id));
    }
  }
  