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.base;
  
  import org.junit.jupiter.api.Test;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import org.apache.causeway.commons.collections.Can;
  import org.apache.causeway.commons.io.TextUtils;
  
  class TextTest {
  
      @Test
      void lineParsingWin() {
          assertEquals(Can.of("Hallo", "", "World"), TextUtils.readLines("Hallo\r\n\r\nWorld"));
      }
  
      @Test
      void lineParsingUx() {
          assertEquals(Can.of("Hallo", "", "World"), TextUtils.readLines("Hallo\n\nWorld"));
      }
  
      @Test
      void repeatedEmptyLineRemoval() {
  
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeRepeatedEmptyLines(Can.of("Hallo", "", "World")));
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeRepeatedEmptyLines(Can.of("Hallo", "", "", "World")));
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeRepeatedEmptyLines(Can.of("Hallo", "", " \t ", "World")));
  
          assertEquals(Can.of("", "Hallo", "", "World"), _Text.removeRepeatedEmptyLines(Can.of("", "Hallo", "", "World")));
          assertEquals(Can.of("", "Hallo", "", "World"), _Text.removeRepeatedEmptyLines(Can.of("", "", "Hallo", "", "World")));
  
          assertEquals(Can.of("Hallo", "", "World", ""), _Text.removeRepeatedEmptyLines(Can.of("Hallo", "", "World", "")));
          assertEquals(Can.of("Hallo", "", "World", ""), _Text.removeRepeatedEmptyLines(Can.of("Hallo", "", "World", "", "")));
  
      }
  
      @Test
      void leadingEmptyLineRemoval() {
  
          assertEquals(Can.<String>empty(), _Text.removeLeadingEmptyLines(Can.of("", "", "")));
  
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeLeadingEmptyLines(Can.of("Hallo", "", "World")));
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeLeadingEmptyLines(Can.of("", "Hallo", "", "World")));
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeLeadingEmptyLines(Can.of("", "", "Hallo", "", "World")));
  
      }
  
      @Test
      void trailingEmptyLineRemoval() {
  
          assertEquals(Can.<String>empty(), _Text.removeTrailingEmptyLines(Can.of("", "", "")));
  
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeTrailingEmptyLines(Can.of("Hallo", "", "World")));
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeTrailingEmptyLines(Can.of("Hallo", "", "World", "")));
          assertEquals(Can.of("Hallo", "", "World"), _Text.removeTrailingEmptyLines(Can.of("Hallo", "", "World", "", "")));
      }
  
      @Test
      public void notTruncated() throws Exception {
          assertThat(_Text.abbreviated("abcdef", 6), is("abcdef"));
      }
  
      @Test
      public void truncated() throws Exception {
          assertThat(_Text.abbreviated("abcdefg", 6), is("abc..."));
      }
  
      @Test
      public void notTruncatedAtEllipsesLimit() throws Exception {
          assertThat(_Text.abbreviated("abc", 3), is("abc"));
          assertThat(_Text.abbreviated("ab", 2), is("ab"));
          assertThat(_Text.abbreviated("a", 1), is("a"));
      }
  
      @Test
      public void truncatedAtEllipsesLimit() throws Exception {
          assertThat(_Text.abbreviated("abcd", 3), is(""));
          assertThat(_Text.abbreviated("abc", 2), is(""));
          assertThat(_Text.abbreviated("ab", 1), is(""));
      }
  
  }
  