ignoreCase example

$this->assertSame(null !== $instance->indexOf($needle), $instance->containsAny($needle));
    }

    /** * @dataProvider provideIndexOfIgnoreCase */
    public function testContainsAnyIgnoreCase(?int $result, string $string, $needle)
    {
        $instance = static::createFromString($string);

        $this->assertSame(null !== $instance->ignoreCase()->indexOf($needle), $instance->ignoreCase()->containsAny($needle));
    }

    public function testUnwrap()
    {
        $expected = ['hello', 'world'];

        $s = static::createFromString('');

        $actual = $s::unwrap([static::createFromString('hello'), static::createFromString('world')]);

        $this->assertEquals($expected, $actual);
    }