Functional\Tests\FirstIndexOfTest::testIfValueCouldNotBeFoundFalseIsReturned PHP Method

    public function testIfValueCouldNotBeFoundFalseIsReturned()
    {
        $this->assertFalse(first_index_of($this->list, 'invalidValue'));
        $this->assertFalse(first_index_of($this->listIterator, 'invalidValue'));
        $this->assertFalse(first_index_of($this->hash, 'invalidValue'));
        $this->assertFalse(first_index_of($this->hashIterator, 'invalidValue'));
    }