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maciej-nowakmaciej-nowak
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junit post code added
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9 files changed

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‎junit/Game.kt‎

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class Game {
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private val redTeam = mutableListOf<String>()
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private val blueTeam = mutableListOf<String>()
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private var redGoals = 0
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private var blueGoals = 0
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private var gameStarted = false
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fun start() {
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if(!gameStarted && teamsSizesEquals()) {
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gameStarted = true
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redGoals = 0
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blueGoals = 0
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//do and allow for some actions
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}
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}
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fun stop() {
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if(gameStarted) {
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gameStarted = false
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//do some other actions
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}
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}
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fun clearTeams() {
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redTeam.clear()
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blueTeam.clear()
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}
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fun addPlayer(team: Team, player: String): Boolean {
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if(allowToAddPlayer(player)) {
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when(team) {
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Team.RED -> { redTeam.add(player) }
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Team.BLUE -> { blueTeam.add(player) }
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}
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return true
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}
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else return false
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}
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fun removePlayer(player: String): Boolean {
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if(allowToRemovePlayer(player)) {
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if(redTeam.contains(player)) redTeam.remove(player)
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else blueTeam.remove(player)
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return true
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}
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else return false
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}
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fun goal(team: Team) {
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when(team) {
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Team.RED -> { redGoals++ }
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Team.BLUE -> { blueGoals++ }
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}
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}
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fun getScore(): String {
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return "RED $redGoals:$blueGoals BLUE"
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}
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fun getRedTeam(): List<String> {
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return redTeam
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}
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fun getBlueTeam(): List<String> {
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return blueTeam
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}
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fun hasStarted(): Boolean {
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return gameStarted
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}
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private fun allowToAddPlayer(player: String): Boolean {
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return (!gameStarted && !redTeam.contains(player) && !blueTeam.contains(player))
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}
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private fun allowToRemovePlayer(player: String): Boolean {
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return (!gameStarted && (redTeam.contains(player) || blueTeam.contains(player)))
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}
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private fun teamsSizesEquals(): Boolean {
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return redTeam.size != 0 && blueTeam.size != 0 && redTeam.size.equals(blueTeam.size)
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}
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enum class Team {
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RED, BLUE;
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}
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}

‎junit/GameActivity.kt‎

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class GameActivity : AppCompatActivity() {
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private val game = Game()
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_game)
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//init view
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}
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//imit real actions flow in one function
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fun startGame() {
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game.start()
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}
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fun stopGame() {
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game.stop()
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}
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fun initDefaultGame() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.RED, "William")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.addPlayer(Game.Team.BLUE, "Jim")
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}
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fun isGameRunning(): Boolean {
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return game.hasStarted()
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}
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}

‎junit/androidTest/FilterInstrumentedTest.kt‎

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@RunWith(AndroidJUnit4::class)
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class FilterInstrumentedTest {
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@MediumTest @SdkSuppress(minSdkVersion = 21) @RequiresDevice
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@Test //runs only on devices with min 21 API
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fun checkAppTitle() {
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val appContext = InstrumentationRegistry.getTargetContext()
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assertEquals("Game", appContext.getString(R.string.app_name))
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}
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@SmallTest @SdkSuppress(maxSdkVersion = 20)
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@Test //runs on devices and emulator with max 20 API
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fun checkOldAppTitle() {
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val appContext = InstrumentationRegistry.getTargetContext()
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assertEquals("Game Old", appContext.getString(R.string.app_name))
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}
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}

‎junit/androidTest/InstrumentedTest.kt‎

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@RunWith(AndroidJUnit4::class)
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class InstrumentedTest {
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@Rule @JvmField
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val activityRule = ActivityTestRule(GameActivity::class.java)
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//use only context
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@Test
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fun checkStringResourceFromContext() {
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val appContext = InstrumentationRegistry.getTargetContext()
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assertEquals("Game", appContext.getString(R.string.app_name))
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}
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//use activity from rule
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@Test
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fun startAndStopGameFromActivity() {
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activityRule.activity.initDefaultGame()
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activityRule.activity.startGame()
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assertTrue(activityRule.activity.isGameRunning())
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activityRule.activity.stopGame()
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assertFalse(activityRule.activity.isGameRunning())
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}
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}

‎junit/test/FullTest.kt‎

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class FullTest {
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//mock some dependencies
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val game = Game()
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@Before
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fun init() {
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//clear game before every test
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game.clearTeams()
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}
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@After
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fun uninit() {
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//clear game before every test
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game.stop()
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}
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//use @BeforeClass, @AfterClass in the same way
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@Ignore //ignore this test temporary
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fun startGameWithDifferentTeamsSize() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.addPlayer(Game.Team.BLUE, "Jim")
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game.start()
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assertFalse(game.hasStarted())
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}
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@Test(timeout = 1000) //after 1000ms when test couldn't finished than just failed
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fun startAndStopGame() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.RED, "William")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.addPlayer(Game.Team.BLUE, "Jim")
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game.start()
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assertTrue(game.hasStarted())
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game.stop()
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assertFalse(game.hasStarted())
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}
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@Test
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fun modifyTeamsAndStartGame() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.RED, "William")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.start()
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assertFalse(game.hasStarted())
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game.removePlayer("William")
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game.start()
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assertTrue(game.hasStarted())
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}
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}

‎junit/test/ParameterizedTest.kt‎

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@RunWith(Parameterized::class)
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class ParameterizedTest(val redGoals: Int, val blueGoals: Int, val scores: String) {
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companion object {
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val game = Game()
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@BeforeClass @JvmStatic
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fun initTeams() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.RED, "William")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.addPlayer(Game.Team.BLUE, "Jim")
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}
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@AfterClass @JvmStatic
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fun uninitTeams() {
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game.clearTeams()
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}
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//create test data
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@Parameters @JvmStatic
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fun createData(): Collection<Array<Any>> {
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return listOf(
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arrayOf(0, 2, "RED 0:2 BLUE"),
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arrayOf(10, 5, "RED 10:5 BLUE"),
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arrayOf(3, 3, "RED 3:3 BLUE"))
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}
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}
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//use auto parameterized test method
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@Test
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fun scoreAndCheckResultWithParameterized() {
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game.start()
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repeat(redGoals) { game.goal(Game.Team.RED) }
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repeat(blueGoals) { game.goal(Game.Team.BLUE) }
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assertEquals(scores, game.getScore())
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game.stop()
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}
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//instead of manual parameterized
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@Test
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fun scoreAndCheckResultNormal() {
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//first test
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game.start()
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repeat(2) { game.goal(Game.Team.BLUE) }
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assertEquals("RED 0:2 BLUE", game.getScore())
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game.stop()
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//second test
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game.start()
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repeat(10) { game.goal(Game.Team.RED) }
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repeat(5) { game.goal(Game.Team.BLUE) }
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assertEquals("RED 10:5 BLUE", game.getScore())
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game.stop()
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//third test
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game.start()
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repeat(3) { game.goal(Game.Team.RED) }
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repeat(3) { game.goal(Game.Team.BLUE) }
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assertEquals("RED 3:3 BLUE", game.getScore())
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game.stop()
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}
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}

‎junit/test/PrintTestRule.kt‎

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class PrintTestRule : TestRule {
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private lateinit var base: Statement
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private lateinit var description: Description
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override fun apply(base: Statement, description: Description): Statement {
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this.base = base
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this.description = description
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return PrintTestStatement(base)
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}
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class PrintTestStatement(private val base: Statement) : Statement() {
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override fun evaluate() {
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println("Log before test action")
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base.evaluate()
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println("Log after testaction")
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}
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}
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}

‎junit/test/RuleTest.kt‎

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class RuleTest {
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@Rule @JvmField
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val rule = PrintTestRule() //this rule print message before and after every test
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val game = Game()
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@Test
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fun addPlayersWithSameNameToTheSameTeam() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.RED, "William")
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game.addPlayer(Game.Team.RED, "Jack")
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game.addPlayer(Game.Team.RED, "William")
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assertEquals(3, game.getRedTeam().size)
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}
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@Test
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fun addPlayersWithSameNameToTheAnotherTeam() {
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.RED, "William")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.addPlayer(Game.Team.BLUE, "William")
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assertEquals(1, game.getBlueTeam().size)
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}
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}

‎junit/test/SmallTest.kt‎

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class SmallTest {
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@Test
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fun startGameWithDifferentTeamsSize() {
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val game = Game()
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game.addPlayer(Game.Team.RED, "Johnnie")
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game.addPlayer(Game.Team.BLUE, "Jack")
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game.addPlayer(Game.Team.BLUE, "Jim")
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game.start()
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assertFalse(game.hasStarted())
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}
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}

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