code: @Test public void should_pass(){
    assertTrue(caseInsensitiveComparisonStrategy.stringContains("Frodo","ro"));
    assertTrue(caseInsensitiveComparisonStrategy.stringContains("Frodo","RO"));
    assertTrue(caseInsensitiveComparisonStrategy.stringContains("Frodo",""));
    assertFalse(caseInsensitiveComparisonStrategy.stringContains("Frodo","Fra"));
    assertFalse(caseInsensitiveComparisonStrategy.stringContains("Frodo","Frodoo"));
    assertFalse(caseInsensitiveComparisonStrategy.stringContains("Frodo","Froda"));
    assertFalse(caseInsensitiveComparisonStrategy.stringContains("Frodo","abcdefg"));
    assertFalse(caseInsensitiveComparisonStrategy.stringContains("Frodo","a"));
  }
  