Second rework of test.

gistfile1.txt

    @Test
    fun `sulfuras never changes`() {
        val item = updateQuality(Item(SULFURUS_NAME, Int.MAX_VALUE, 80))
        with(item) {
            assertThat(name).isEqualTo(SULFURUS_NAME)
            assertThat(sellIn).isEqualTo(Int.MAX_VALUE)
            assertThat(quality).isEqualTo(80)
        }
    }

    fun updateQuality(item:Item):Item {
        val items = arrayOf(item)
        val app = GildedRose(items)
        app.updateQuality()
        return app.items[0]
    }