lucene/analysis/common/src/test/org/apache/lucene/analysis/charfilter/TestMappingCharFilterFactory.java

/*
 * 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.lucene.analysis.charfilter;

import org.apache.lucene.analysis.BaseTokenStreamFactoryTestCase;

public class TestMappingCharFilterFactory extends BaseTokenStreamFactoryTestCase {
  public void testParseString() throws Exception {

    MappingCharFilterFactory f = (MappingCharFilterFactory) charFilterFactory("Mapping");

    expectThrows(
        IllegalArgumentException.class,
        () -> {
          f.parseString("\\");
        });

    assertEquals(
        "unexpected escaped characters",
        "\\\"\n\t\r\b\f",
        f.parseString("\\\\\\\"\\n\\t\\r\\b\\f"));
    assertEquals("unexpected escaped characters", "A", f.parseString("\\u0041"));
    assertEquals("unexpected escaped characters", "AB", f.parseString("\\u0041\\u0042"));

    expectThrows(
        IllegalArgumentException.class,
        () -> {
          f.parseString("\\u000");
        });

    // invalid hex number
    expectThrows(
        NumberFormatException.class,
        () -> {
          f.parseString("\\u123x");
        });
  }

  /** Test that bogus arguments result in exception */
  public void testBogusArguments() throws Exception {
    IllegalArgumentException expected =
        expectThrows(
            IllegalArgumentException.class,
            () -> {
              charFilterFactory("Mapping", "bogusArg", "bogusValue");
            });
    assertTrue(expected.getMessage().contains("Unknown parameters"));
  }
}