function testConcat()
{
$sc = new StringScanner("foo");
$this->assertEqual($sc->getChar(), "f");
$this->assertEqual($sc->getChar(), "o");
$this->assertEqual($sc->getChar(), "o");
$this->assertTrue($sc->isEos());
$sc->concat("bar");
$this->assertFalse($sc->isEos());
$this->assertEqual($sc->string, "foobar");
$this->assertEqual($sc->getChar(), "b");
$this->assertEqual($sc->getChar(), "a");
$this->assertEqual($sc->getChar(), "r");
$this->assertTrue($sc->isEos());
}
