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.causeway.commons.internal.strings;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  class FormatTest {
  
      // copy of code in scripts/generateConfigDocs.groovy
      public static String format(final String str, final int len) {
          if(str.length() <= len) {
              return str;
          }
  
          final StringBuilder buf = new StringBuilder();
          String remaining = str;
  
          while(remaining.length() > 0) {
              int lastDot = remaining.substring(0, len).lastIndexOf('.');
              int lastDash = remaining.substring(0, len).lastIndexOf('-');
              int splitAt = lastDot > 0
                                  ? lastDot + 1
                                  : lastDash > 0
                                      ? lastDash + 1
                                      : len;
              if(buf.length() > 0) {
                  buf.append("\n");
              }
              buf.append(remaining, 0, splitAt);
              remaining = remaining.substring(splitAt);
  
              if(remaining.length() <= len) {
                  buf.append("\n").append(remaining);
                  remaining = "";
              }
          }
          return buf.toString();
      }
  
      @Test
      void split_once() {
          Assertions.assertEquals("abc.def.ghi.jkl.mno.\npqr.stu.vwx.yza", format("abc.def.ghi.jkl.mno.pqr.stu.vwx.yza", 20));
      }
  
      @Test
      void split_twice() {
          Assertions.assertEquals("abc.def.ghi.jkl.\nmno.pqr.stu.vwx.\nyza", format("abc.def.ghi.jkl.mno.pqr.stu.vwx.yza", 16));
      }
  
      @Test
      void split_not_on_divider() {
          Assertions.assertEquals("abc.def.ghi.\njkl.mno.pqr.\nstu.vwx.yza", format("abc.def.ghi.jkl.mno.pqr.stu.vwx.yza", 15));
      }
  
      @Test
      void no_divider() {
          Assertions.assertEquals("abcdefghij\nklmnopqrst\nuvwxyza", format("abcdefghijklmnopqrstuvwxyza", 10));
      }
  
      @Test
      void real_world() {
          Assertions.assertEquals("isxs.persistence.\njdo-dataxnucleus.\nclass-metadata-\nloaded-listener", format("isxs.persistence.jdo-dataxnucleus.class-metadata-loaded-listener", 20));
      }
  
  }
  