public function testOccurences()
{
$str = new Text('let it go');
$this->assertTrue($str->startsWith('let'));
$this->assertTrue($str->startsWith(new Text('let')));
$this->assertFalse($str->startsWith('go'));
$this->assertFalse($str->startsWith(new Text('go')));
$this->assertTrue($str->endsWith('go'));
$this->assertTrue($str->endsWith(new Text('go')));
$this->assertFalse($str->endsWith('let'));
$this->assertFalse($str->endsWith(new Text('let')));
$this->assertTrue($str->contains('it'));
$this->assertTrue($str->contains(new Text('it')));
$this->assertFalse($str->contains('Hulk'));
$this->assertFalse($str->contains(new Text('Hulk')));
$this->assertTrue($str->equals('let it go'));
$this->assertTrue($str->equals(new Text('let it go')));
$this->assertFalse($str->equals('Let It Go'));
$this->assertTrue($str->equalsIgnoreCase('Let It Go'));
$this->assertTrue($str->equalsIgnoreCase(new Text('Let It Go')));
$this->assertFalse($str->isEmpty());
}
