Natan Ximenes Senemix29

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Android Developer

Senemix29 / NameValidatorTest.kt

Last active August 7, 2021 23:51

A test class to be used as an example at a medium post about testing

	class NameValidatorTest {
	private val nameValidator = NameValidator()

	@Test
	fun 'isValid should return false when name is empty'() {
	val name = ""
	assertEquals(false, nameValidator.isValid(name))
	}

	@Test

Senemix29 / NameValidator.kt

Created August 7, 2021 23:47

A NameValidator class to be used as and example at a Medium post about testing

	private const val MIN_NAME_LENGTH = 3
	class NameValidator {
	fun isValid(name: String): Boolean {
	return when {
	name.isEmpty() -> false
	name.length < MIN_NAME_LENGTH -> false
	else -> true
	}
	}
	}

Senemix29 / FileUtilsTest.kt

Created March 18, 2021 03:02

Dummy example class to be shown embed at Medium

	class FileUtils {
	fun getDirectoryFilesListSize(context: Context, fileDirectory: String): Int {
	val directory = File(context.filesDir, fileDirectory)
	val fileList = directory.listFiles().orEmpty()
	return fileList.size
	}
	}

Senemix29 / FileUtilsTest.kt

Created March 18, 2021 03:00

Example of Android Instrumented Unit Test Using Espresso

	@Test
	fun shouldReturnNumberOfFilesInsideADirectory() {
	//Given
	val bananaDirectory = "bananas"
	createFileAtInternalDirectory(context, bananaDirectory, "prata")
	createFileAtInternalDirectory(context, bananaDirectory, "d'agua")
	createFileAtInternalDirectory(context, bananaDirectory, "nanica")

	//When
	val directoryFileListSize =

Senemix29 / FightClubActivityTest.kt

Last active March 18, 2021 03:03

Example of Android Instrumented tests using Espresso

	@Test
	fun shouldEnableButtonWhenValidMessageIsTyped() {
	onView(withId(R.id.messageField)).perform(typeText("you do not talk about Fight Club"))
	onView(withId(R.id.sendButton)).check(matches(isEnabled()))
	}

	@Test
	fun shouldNotEnableButtonWhenInvalidMessageIsTyped() {
	onView(withId(R.id.messageField)).perform(typeText("Hey, let me tell you about the Fight Club"))
	onView(withId(R.id.sendButton)).check(matches(not(isEnabled())))