@Test
public void testCapitalize() {

    assertThat( Strings.capitalize( null ) ).isNull();
    assertThat( Strings.capitalize( "c" ) ).isEqualTo( "C" );
    assertThat( Strings.capitalize( "capitalize" ) ).isEqualTo( "Capitalize" );
    assertThat( Strings.capitalize( "AlreadyCapitalized" ) ).isEqualTo( "AlreadyCapitalized" );
    assertThat( Strings.capitalize( "notCapitalized" ) ).isEqualTo( "NotCapitalized" );
}