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.util;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import org.apache.causeway.commons.collections.Can;
  import org.apache.causeway.commons.io.TextUtils;
  
  class StringDelimiterTest {
  
      @Test
      void parsing() {
  
          var delimiter = TextUtils.delimiter(".");
  
          assertThatDelimiterEquals(delimiter, new String[0]);
          assertThatDelimiterEquals(delimiter.parse(null), new String[0]);
          assertThatDelimiterEquals(delimiter.parse(""), new String[0]);
          assertThatDelimiterEquals(delimiter.parse("a"), "a");
  
          // single prefix and/or suffix
          assertThatDelimiterEquals(delimiter.parse(".a"), "a");
          assertThatDelimiterEquals(delimiter.parse("a."), "a");
          assertThatDelimiterEquals(delimiter.parse(".a."), "a");
  
          // multi prefix and/or suffix
          assertThatDelimiterEquals(delimiter.parse("..a"), "a");
          assertThatDelimiterEquals(delimiter.parse("a.."), "a");
          assertThatDelimiterEquals(delimiter.parse("..a.."), "a");
  
          assertThatDelimiterEquals(delimiter.parse("a.b"), "a", "b");
  
          // multi infix
          assertThatDelimiterEquals(delimiter.parse("a..b"), "a", "b");
      }
  
      @Test
      void joining() {
  
          var delimiter = TextUtils.delimiter(".");
  
          assertThatDelimiterEquals(
                  delimiter.parse(null).join(null), new String[0]);
  
          assertThatDelimiterEquals(
                  delimiter.parse("a.b").join(null), "a", "b");
  
          assertThatDelimiterEquals(
                  delimiter.parse(null).join(delimiter.parse("a.b")), "a", "b");
  
          assertThatDelimiterEquals(
                  delimiter.join(delimiter.parse("a.b")), "a", "b");
  
          assertThatDelimiterEquals(
                  delimiter.parse("a.b").join(delimiter.parse("c.d")), "a", "b", "c", "d");
  
          assertThatDelimiterEquals(
                  delimiter.parse("a.b")
                      .join(delimiter.parse("c"))
                      .join(delimiter.parse("d")), "a", "b", "c", "d");
      }
  
      @Test
      void asDelimitedString() {
          var delimiter = TextUtils.delimiter(".");
          assertEquals("", delimiter.asDelimitedString());
          assertEquals("a.b", delimiter.parse("a.b").asDelimitedString());
      }
  
      @Test
      void withDelimiter() {
          var delimiter = TextUtils.delimiter(".");
          assertEquals("", delimiter.withDelimiter("/").asDelimitedString());
          assertEquals("a/b", delimiter.parse("a.b").withDelimiter("/").asDelimitedString());
      }
  
      @Test
      void toStringMethod() {
          var delimiter = TextUtils.delimiter(".");
          assertEquals("StringDelimiter[delimiter=.,elements=[]]", delimiter.toString());
          assertEquals("StringDelimiter[delimiter=.,elements=[a, b]]", delimiter.parse("a.b").toString());
      }
  
      // -- HELPER
  
      private static void assertThatDelimiterEquals(final TextUtils.StringDelimiter delimiter, final String...parts) {
          assertEquals(Can.ofArray(parts),
                  delimiter.stream().collect(Can.toCan()));
      }
  
  }
  