adam-hurwitz

private lateinit var test: FeedViewTestCase
private val intent = FeedViewIntent()

@ParameterizedTest
@MethodSource("FeedViewTestCaseStream")
fun `FeedView`(feedViewTestCase: FeedViewTestCase) = testCoroutineDispatcher.runBlockingTest {
    test = feedViewTestCase
    mockComponents(test)
    val viewModel = FeedViewModel(...)
    viewModel.bindIntents(object : FeedView {

adam-hurwitz

@ExperimentalCoroutinesApi
class FeedViewTestExtension : BeforeEachCallback, AfterEachCallback, ParameterResolver {

    override fun beforeEach(context: ExtensionContext?) {
        // Set TestCoroutineDispatcher.
        Dispatchers.setMain(context?.root
                ?.getStore(TEST_COROUTINE_DISPATCHER_NAMESPACE)
                ?.get(TEST_COROUTINE_DISPATCHER_KEY, TestCoroutineDispatcher::class.java)!!)
        // Set LiveData Executor.
        ArchTaskExecutor.getInstance().setDelegate(object : TaskExecutor() {

adam-hurwitz

@ExperimentalCoroutinesApi
@ExtendWith(FeedViewTestExtension::class)
class FeedViewTest(
        val testCoroutineDispatcher: TestCoroutineDispatcher,
        val testCoroutineScope: TestCoroutineScope
) {
        
    private fun FeedViewTestCaseStream() = feedViewTestCaseStream()
    private lateinit var test: FeedViewTestCase
    private val repository = mockkClass(FeedRepository::class)

adam-hurwitz

Trials	Time (ms)
1	447
2	413
3	404
4	438
5	473
6	444
7	442
8	422

adam-hurwitz

Trials	Time (ms)
1	872
2	478
3	393
4	506
5	439
6	443
7	520
8	461

adam-hurwitz

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/placeholder">
    <stroke
        android:width="1dp"
        android:color="@color/colorAccent"/>
    <padding
        android:bottom="2dp"
        android:left="2dp"
        android:right="2dp"

adam-hurwitz

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val appBarConfiguration = AppBarConfiguration(setOf(R.id.nav_home, R.id.nav_screenTwo))
        val navHostFragment = supportFragmentManager.findFragmentById(R.id.nav_host) as NavHostFragment
        val navController = navHostFragment.navController
        setupActionBarWithNavController(navController, appBarConfiguration)
        bottomNavigation.setupWithNavController(navController)
    }

adam-hurwitz

  <uses-feature android:name="android.hardware.camera" />
  <uses-permission android:name="android.permission.CAMERA" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

adam-hurwitz

/**
* From Google's CameraXbasic sample app's MainActivity.kt and GalleryFragment.kt
* See: [https://github.com/android/camera-samples/tree/master/CameraXBasic#cameraxbasic]
*/

val EXTENSION_WHITELIST = arrayOf("JPG")

/** Use external media if it is available, our app's file directory otherwise */
fun getOutputDirectory(context: Context): File {
    val appContext = context.applicationContext

adam-hurwitz

// Pass method
layoutName.setOnClickListener(onItemClicked);

private View.OnClickListener onItemClicked = view → // Do something;
// Or 
private View.OnClickListener onItemClicked = 
   view → {
      // Do something;
   };