hasSuffix('c')); self::assertEquals(4, $s->length()); self::assertEquals('abc', $s->trimmed()->value()); self::assertEquals('abc', $s->trim()->toString()); $s->trim(); self::assertEquals(3, $s->length()); self::assertTrue($s->contains('b')); self::assertTrue($s->hasPrefix('a')); self::assertTrue($s->hasSuffix('c')); } }