jackcess/src/test/java/com/healthmarketscience/jackcess/util/StringUtilTest.java

package com.healthmarketscience.jackcess.util;

import org.junit.Test;

import static org.junit.Assert.*;

public class StringUtilTest
{

  @Test
  public void testLength() {
      assertEquals(0, StringUtil.length(null));
      assertEquals(0, StringUtil.length(""));
      assertEquals(1, StringUtil.length("A"));
      assertEquals(1, StringUtil.length(" "));
      assertEquals(4, StringUtil.length("sman"));
  }

  @Test
  public void testIsEmpty() {
      assertTrue(StringUtil.isEmpty(null));
      assertTrue(StringUtil.isEmpty(""));
      assertFalse(StringUtil.isEmpty(" "));
      assertFalse(StringUtil.isEmpty("not Empty"));
  }

  @Test
  public void testIsBlank() {
      assertTrue(StringUtil.isBlank(null));
      assertTrue(StringUtil.isBlank(""));
      assertTrue(StringUtil.isBlank("   "));
      assertTrue(StringUtil.isBlank(System.lineSeparator()));
  }

  @Test
  public void testTrimToNull() {
      assertNull(StringUtil.trimToNull(null));
      assertNull(StringUtil.trimToNull(""));
      assertNull(StringUtil.trimToNull("   "));
      assertEquals("sman", StringUtil.trimToNull("sman"));
      assertEquals("81", StringUtil.trimToNull(" 81 "));
  }

  @Test
  public void testCapitalize() {
      assertNull(StringUtil.capitalize(null));
      assertEquals("", StringUtil.capitalize(""));
      assertEquals("Hello", StringUtil.capitalize("hello"));
      assertEquals("Foo bar", StringUtil.capitalize("foo bar"));
      assertEquals("Boo far", StringUtil.capitalize("Boo far"));
  }

  @Test
  public void testReplace() {
      assertNull(null, StringUtil.replace(null, null, null));
      assertEquals(" ", StringUtil.replace(" ", " ", " "));
      assertEquals("text", StringUtil.replace("text", "", "newText"));
      assertEquals(" txt txt ", StringUtil.replace(" text text ", "text", "txt"));
  }

  @Test
  public void testRemove() {
      assertNull(StringUtil.remove(null, null));
      assertNull(StringUtil.remove(null, ""));
      assertNull(StringUtil.remove(null, "remove"));
      assertEquals("", StringUtil.remove("", "remove"));
      assertEquals("input", StringUtil.remove("input", "remove"));
      assertEquals("Removed", StringUtil.remove("Removed", "remove"));
      assertEquals("", StringUtil.remove("remove", "remove"));
      assertEquals("long", StringUtil.remove("long", "longer"));
  }

  @Test
  public void testReflectionToString() {
      assertEquals("null", StringUtil.reflectionToString(null));
      assertTrue(StringUtil.reflectionToString("").matches("^java\\.lang\\.String@[0-9a-f]+\\[hash=0,value=\\[C.+$"));
      assertEquals("Integer[value=47]", StringUtil.reflectionToString(Integer.valueOf(47), false, false));
  }

}