public function testLength()
{
$sj = new StringJoiner("_");
$this->assertEquals(0, $sj->length());
$sj = new StringJoiner("_", ">", "<");
$this->assertEquals(2, $sj->length());
$sj = new StringJoiner("_");
$sj->add("1");
$sj->add("2");
$this->assertEquals(3, $sj->length());
}
/**
* Returns a new String composed of copies of the
* {@code CharSequence elements} joined together with a copy of
* the specified {@code delimiter}.
*
* <blockquote>For example,
* <pre>{@code
* String message = String.join("-", "Java", "is", "cool");
* // message returned is: "Java-is-cool"
* }</pre></blockquote>
*
* Note that if an element is null, then {@code "null"} is added.
*
* @param string|\PHPJ\Lang\String $delimiter
* the delimiter that separates each element
*
* @return \PHPJ\Lang\String
* a new {@code String} that is composed of the {@code elements}
* separated by the {@code delimiter}
*
* @throws NullPointerException If {@code delimiter} or {@code elements}
* is {@code null}
*
* @see java.util.StringJoiner
* @since 1.8
*/
public static function join($delimiter)
{
$sequence = self::joinGetSequence(func_get_args());
$sj = new StringJoiner((string) $delimiter);
foreach ($sequence as $cs) {
$sj->add($cs);
}
return $sj->toString();
}