public function testEquals()
{
$str1 = new Str("Hello, world.");
$str2 = new Str("HELLO, WORLD.");
$str3 = new Str("HELLO, WORLD.");
$this->assertTrue($str1->equals($str1));
$this->assertFalse($str1->equals($str2));
$this->assertTrue($str2->equals($str3));
$str4 = new Str("1234");
try {
$this->assertFalse($str4->equals(1234));
} catch (StrInvalidArgumentException $ex) {
$this->assertEquals(get_class($ex), 'Str\\StrInvalidArgumentException');
}
$this->assertTrue($str1->equalsIgnoreCase(new Str("HELLO, WORLD.")));
$this->assertTrue($str2->equalsIgnoreCase(new Str("Hello, world.")));
}