package org.davidmoten.text.utils;
   
   import static org.junit.Assert.assertEquals;
   
   import org.junit.Test;
   
   public class StringBuilder2Test {
   
       @Test
      public void test() {
          StringBuilder2 b = new StringBuilder2("abc");
          assertEquals("abc", b.toString());
      }
  
      @Test
      public void testSetLength() {
          StringBuilder2 b = new StringBuilder2("abc");
          b.setLength(2);
          assertEquals("ab", b.toString());
      }
  
      @Test
      public void testDelete() {
          StringBuilder2 b = new StringBuilder2("abc");
          b.delete(1, 2);
          assertEquals("ac", b.toString());
      }
  
      @Test
      public void testAppendChar() {
          StringBuilder2 b = new StringBuilder2("abc");
          b.append('d');
          assertEquals("abcd", b.toString());
      }
  
      @Test
      public void testAppendStringBuilder2() {
          StringBuilder2 b = new StringBuilder2("abc");
          StringBuilder2 c = new StringBuilder2("def");
          b.append(c);
          assertEquals("abcdef", b.toString());
      }
  
      @Test
      public void testAppendStringBuilder2WithLongWord() {
          StringBuilder2 b = new StringBuilder2("abc");
          StringBuilder2 c = new StringBuilder2("defghijklmnopqrstuvwxyz");
          b.append(c);
          assertEquals("abcdefghijklmnopqrstuvwxyz", b.toString());
      }
  
      @Test
      public void testBlank() {
          StringBuilder2 a = new StringBuilder2();
          a.append('a');
          assertEquals(1, a.length());
          assertEquals("a", a.toString());
      }
  
      @Test
      public void testCharAt() {
          StringBuilder2 b = new StringBuilder2("abc");
          assertEquals('a', b.charAt(0));
          assertEquals('b', b.charAt(1));
          assertEquals('c', b.charAt(2));
      }
  
      @Test
      public void testSubsequence() {
          StringBuilder2 b = new StringBuilder2("abcdef");
          assertEquals("abc", b.subSequence(0, 3).toString());
      }
  
      @Test
      public void testSubsequence2() {
          StringBuilder2 b = new StringBuilder2("abcdef");
          assertEquals("bcd", b.subSequence(1, 4).toString());
      }
  
      @Test
      public void testSubsequence3() {
          StringBuilder2 b = new StringBuilder2("abcdef");
          assertEquals("abcdef", b.subSequence(0, 6).toString());
      }
  
      @Test
      public void testSubstring() {
          StringBuilder2 b = new StringBuilder2("abcdef");
          assertEquals("cd", b.substring(2, 4).toString());
      }
  
      @Test
      public void testRightTrimEmpty() {
          assertEquals(0, new StringBuilder2("").rightTrim().length());
      }
  
      @Test
      public void testRightTrimNoSpace() {
          assertEquals(3, new StringBuilder2("abc").rightTrim().length());
     }
 
     @Test
     public void testRightTrimSpacesOnly() {
         assertEquals(0, new StringBuilder2("   ").rightTrim().length());
     }
 
     @Test
     public void testRightTrimSpacesAfterLetters() {
         assertEquals(3, new StringBuilder2("abc   ").rightTrim().length());
     }
 }