\uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ub85c\uc9c1\uc774 \uc62c\ubc14\ub978\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud574 ViewModel\uc744 \ud14c\uc2a4\ud2b8\ud558\ub294 \uac83\uc740 \uc88b\uc740 \uc0dd\uac01\uc774\ub2e4. \uc774 \uc139\uc158\uc5d0\uc11c\ub294 \uc0c1\ud0dc\uc5d0 \ub300\ud574 State<T>\ub97c \uc0ac\uc6a9\ud558\uc5ec ViewModel\uc744 \ud14c\uc2a4\ud2b8 \ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc8fc\ub294 \ud14c\uc2a4\ud2b8 \ucf54\ub4dc\ub97c \uc791\uc131\ud560 \uac83\uc774\ub2e4.<\/p>\n\n\n\n
class TodoViewModelTest {
@Test
fun whenRemovingItem_updatesList() {
\/\/ before
val viewModel = TodoViewModel()
val item1 = generateRandomTodoItem()
val item2 = generateRandomTodoItem()
viewModel.addItem(item1)
viewModel.addItem(item2)
\/\/ during
viewModel.removeItem(item1)
\/\/ after
assertThat(viewModel.todoItems).isEqualTo(listOf(item2))
}
}<\/code><\/pre>\n\n\n\n\uc774 \ud14c\uc2a4\ud2b8\ub294 \uc774\ubca4\ud2b8\uc5d0 \uc758\ud574 \uc9c1\uc811 \uc218\uc815\ub418\ub294 State<T>\ub97c \ud14c\uc2a4\ud2b8\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc900\ub2e4. \uc774\uc804 \uc139\uc158\uc5d0\uc11c \uc0c8 ViewModel\uc744 \ub9cc\ub4e0 \ub2e4\uc74c todoItems\uc5d0 \ub450 \uac1c\uc758 \ud56d\ubaa9\uc744 \ucd94\uac00\ud55c\ub2e4.<\/p>\n\n\n\n
\uc6b0\ub9ac\uac00 \ud14c\uc2a4\ud2b8\ud560 \uba54\uc18c\ub4dc\ub294 \ubaa9\ub85d\uc758 \uccab \ubc88\uc9f8 \uc544\uc774\ud15c\uc744 \uc81c\uac70\ud558\ub294 removeItem\uc774\ub2e4.<\/p>\n\n\n\n
\ub9c8\uc9c0\ub9c9\uc73c\ub85c \ubaa9\ub85d\uc5d0 \ub450 \ubc88\uc9f8 \uc544\uc774\ud15c\ub9cc \ud3ec\ud568\ub418\uc5b4 \uc788\ub2e4\uace0 \ud655\uc2e0\ud558\uae30 \uc704\ud574 assert \uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n
\uc5c5\ub370\uc774\ud2b8\uac00 \ud14c\uc2a4\ud2b8\uc5d0 \uc758\ud574 \uc9c1\uc811 \ubc1c\uc0dd\ud55c \uacbd\uc6b0(\uc5ec\uae30\uc5d0\uc11c removeItem\uc744 \ud638\ucd9c\ud558\uc5ec \uc218\ud589\ud558\ub294 \uac83\ucc98\ub7fc) \ud14c\uc2a4\ud2b8\uc5d0\uc11c todoItems\ub97c \uc77d\uae30 \uc704\ud574 \ucd94\uac00 \uc791\uc5c5\uc744 \uc218\ud589\ud560 \ud544\uc694\uac00 \uc5c6\ub2e4. \uc774\uac74 \uadf8\ub0e5 List<TodoItem>\uc77c \ubfd0\uc774\ub2e4.<\/p>\n\n\n\n
\uacbd\uace0:<\/strong> MutableState<T>\uc5d0 \ub300\ud55c \uc4f0\uae30\uac00 \ub2e4\ub978 \uc2a4\ub808\ub4dc\uc5d0\uc11c \uc218\ud589\ub418\uba74 \ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc989\uc2dc \ud45c\uc2dc\ub418\uc9c0 \uc54a\ub294\ub2e4. <\/p>\ubcc0\uacbd \uc0ac\ud56d\uc744 \ud45c\uc2dc\ud558\uae30 \uc704\ud55c \uc800\uc218\uc900 API\ub294 Snapshot.sendApplyNotifications()\uc774\ub2e4.<\/p>