Extension\Optimizers\SubstrTest::testThreeArguments1 PHP Method

    public function testThreeArguments1()
    {
        $t = new Substr();
        $this->assertSame($t->testThreeArguments('abcdef', 0, -3), 'abc');
        $this->assertSame($t->testThreeArguments('123abc', 0, 3), '123');
        $this->assertSame($t->testThreeArguments('abcdef', 1, -3), 'bc');
        $this->assertSame($t->testThreeArguments('abcdef', -2, 0), '');
        $this->assertSame($t->testThreeArguments(12345, 1, -1), '234');
    }