Jake Wharton Testing Robots

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A View A

A View A Presenter A Model A

Presenter Model View A Unit Test A Fake Model

Presenter Model View Unit Test

View Presenter Model

View

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

Send $42 to "foo@bar.com". Verify success. $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

• Enter "42" with the number pad. $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send Send $42 to "foo@bar.com". Verify success.

Send $42 to "foo@bar.com". Verify success. • Enter "42" with the number pad. • Tap on the input box marked "Recipient". $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

Send $42 to "foo@bar.com". Verify success. • Enter "42" with the number pad. • Tap on the input box marked "Recipient". • Type "foo@bar.com". $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

Send $42 to "foo@bar.com". Verify success. • Enter "42" with the number pad. • Tap on the input box marked "Recipient". • Type "foo@bar.com". • Press the button marked "Send". $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

Send $42 to "foo@bar.com". Verify success. • Enter "42" with the number pad. • Tap on the input box marked "Recipient". • Type "foo@bar.com". • Press the button marked "Send". • Verify success screen is shown. $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

PaymentScreen pay = (PaymentScreen) obtainScreen(); $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

PaymentScreen pay = (PaymentScreen) obtainScreen();
 pay.amountView.setValue(42_00);
 pay.recipientView.setText("foo@bar.com"); $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

PaymentScreen pay = (PaymentScreen) obtainScreen();
 pay.amountView.setValue(42_00);
 pay.recipientView.setText("foo@bar.com");
 pay.sendView.click(); $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

PaymentScreen pay = (PaymentScreen) obtainScreen();
 pay.amountView.setValue(42_00);
 pay.recipientView.setText("foo@bar.com");
 pay.sendView.click();
 
 Thread.sleep(1000); $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

PaymentScreen pay = (PaymentScreen) obtainScreen();
 pay.amountView.setValue(42_00);
 pay.recipientView.setText("foo@bar.com");
 pay.sendView.click();
 
 Thread.sleep(1000);
 
 assertThat(obtainScreen())
 .isInstanceOf(SuccessScreen.class); $0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send

A Test A PaymentScreen pay = (PaymentScreen) obtainScreen();
 pay.amountView.setValue(42_00);
 pay.recipientView.setText("foo@bar.com");
 pay.sendView.click();
 
 Thread.sleep(1000);
 
 assertThat(obtainScreen())
 .isInstanceOf(SuccessScreen.class); Presenter View Fake Model

Presenter View Fake Model A Test A

Presenter A View A Fake Model Test

Presenter Fake Model Test View Send $42 to "foo@bar.com". Verify success.

Presenter View Fake Model Test

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send findViewWithText("4").click();
 findViewWithText("2").click();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send findViewWithText("4").click();
 findViewWithText("2").click();
 findViewWithHint("Recipient").setText("foo@bar.com");

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send findViewWithText("4").click();
 findViewWithText("2").click();
 findViewWithHint("Recipient").setText("foo@bar.com");
 findViewWithText("Send").click();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send findViewWithText("4").click();
 findViewWithText("2").click();
 findViewWithHint("Recipient").setText("foo@bar.com");
 findViewWithText("Send").click();
 
 Thread.sleep(1000);

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send findViewWithText("4").click();
 findViewWithText("2").click();
 findViewWithHint("Recipient").setText("foo@bar.com");
 findViewWithText("Send").click();
 
 Thread.sleep(1000);
 
 findViewWithText("Success!");

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send onView(withText("4")).perform(click());
 onView(withText("2")).perform(click());
 onView(withHint("Recipient")).perform(typeText("foo@bar.com"));
 onView(withText("Send")).perform(click());
 
 onView(withText("Success!")).check(visible()); find W 
 find W 
 find W .set 
 find W 
 Thread.sleep(1000);
 
 find W

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send onView(withText("4")).perform(click());
 onView(withText("2")).perform(click());
 onView(withHint("Recipient")) .perform(typeText("foo@bar.com"));
 onView(withText("Send")).perform(click());
 
 onView(withText("Success!")).check(visible()); Send $42 to "foo@bar.com". Verify success.

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send onView(withText("4")).perform(click());
 onView(withText("2")).perform(click());
 onView(withHint("Recipient")) .perform(typeText("foo@bar.com"));
 onView(withText("Send")).perform(click());
 
 onView(withText("Success!")).verify(visible()); Send $42 to "foo@bar.com". Verify success. What How

Presenter View Fake Model Test

Presenter View Fake Model Test What How

Presenter View Fake Model Test What How What & How

Presenter View Fake Model Robot Test What How What How

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 }A

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 // ...
 }B
 }A

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 // ...
 }B
 
 PaymentRobot recipient(String recipient) {
 // ...
 }C
 }A

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 // ...
 }B
 
 PaymentRobot recipient(String recipient) {
 // ...
 }C
 
 PaymentRobot send() {
 // ...
 }D
 }A

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 // ...
 }B
 
 PaymentRobot recipient(String recipient) {
 // ...
 }C
 
 ResultRobot send() {
 // ...
 }D
 }A
 
 class ResultRobot {
 }E 
 
 
 
 
 
 
 
 Payment

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 // ...
 }B
 
 PaymentRobot recipient(String recipient) {
 // ...
 }C
 
 ResultRobot send() {
 // ...
 }D
 }A
 
 class ResultRobot {
 ResultRobot isSuccess() {
 // ...
 }F
 }E

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 long dollars = amount / 100;
 String dollarString = String.valueOf(dollars);
 for (int i = 0; i < dollarString.length(); i++) {
 onView(withText(dollarString.substring(i, i + 1))).perform(click());
 }
 long cents = amount - (dollars * 100);
 if (cents != 0) {
 onView(withText(".")).perform(click());
 String centsString = String.valueOf(cents);
 for (int i = 0; i < centsString.length(); i++) {
 onView(withText(centsString.substring(i, i + 1))).perform(click());
 }
 }
 return this;
 }B
 
 PaymentRobot recipient(String recipient) {
 onView(withHint("Recipient")).perform(typeType("foo@bar.com"));
 return this;
 }C
 
 ResultRobot send() {
 onView(withText("Send")).perform(click());
 return new ResultRobot();
 }D
 }A
 
 class ResultRobot {
 ResultRobot isSuccess() {
 onView(withText("Success!")).verify(visible());
 return this;
 }F
 }E

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 payment.amount(42_00);

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 payment.amount(42_00);
 payment.recipient("foo@bar.com");

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 payment.amount(42_00);
 payment.recipient("foo@bar.com")
 payment.send();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 payment.amount(42_00);
 payment.recipient("foo@bar.com")
 ResultRobot result = payment.send();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 payment.amount(42_00);
 payment.recipient("foo@bar.com")
 ResultRobot result = payment.send(); result.isSuccess();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 result.isSuccess();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 result.isSuccess(); Send $42 to "foo@bar.com". Verify success.

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 result.isSuccess(); Send $42 to "foo@bar.com". Verify success. What

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send class PaymentRobot {
 PaymentRobot amount(long amount) {
 long dollars = amount / 100;
 String dollarString = String.valueOf(dollars);
 for (int i = 0; i < dollarString.length(); i++) {
 onView(withText(dollarString.substring(i, i + 1))).perform(click());
 }
 long cents = amount - (dollars * 100);
 if (cents != 0) {
 onView(withText(".")).perform(click());
 String centsString = String.valueOf(cents);
 for (int i = 0; i < centsString.length(); i++) {
 onView(withText(centsString.substring(i, i + 1))).perform(click());
 }
 }
 return this;
 }B
 
 PaymentRobot recipient(String recipient) {
 onView(withHint("Recipient")).perform(typeType("foo@bar.com"));
 return this;
 }C
 
 ResultRobot send() {
 onView(withText("Send")).perform(click());
 return new ResultRobot();
 }D
 }A
 
 class ResultRobot {
 ResultRobot isSuccess() {
 onView(withText("Success!")).verify(visible());
 return this;
 }F
 }E How

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send PaymentRobot payment = new PaymentRobot();
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 result.isSuccess();

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send @Test public void singleFundingSourceSuccess() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }A

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send @Test public void singleFundingSourceSuccess() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }A
 
 @Test public void singleFundingSourceTooMuch() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(1_000_000_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }B

$0 1 2 3 4 5 6 7 8 9 0 < . Recipient Send @Test public void singleFundingSourceSuccess() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }A
 
 @Test public void singleFundingSourceTooMuch() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(1_000_000_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }B 
 
 @Test public void singleFundingSourceInsufficientFunds() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(1_000_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }C

@Test public void singleFundingSourceSuccess() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }A
 
 @Test public void singleFundingSourceTooMuch() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(1_000_000_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }B 
 
 @Test public void singleFundingSourceInsufficientFunds() {
 PaymentRobot payment = new PaymentRobot();
 
 ResultRobot result = payment
 .amount(1_000_00)
 .recipient("foo@bar.com")
 .send();
 
 result.isSuccess();
 }C 
 @Test public void networkErrorAllowsRetry() {
 // ...
 } 
 
 
 
 @Test public void multipleFundingSourcesSuccess() {
 // ...
 } 
 
 
 
 
 
 
 
 
 @Test public void multipleFundingSourcesOneDisabled() {
 // ...
 } 
 
 
 
 
 
 
 
 
 
 
 
 
 @Test public void multipleFundingSourcesInsufficientUsesOther() {
 // ...
 } 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 @Test public void multipleFundingSourcesAllInsufficient() {
 // ...
 } 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 @Test public void unauthenticatedLogsOut() {
 // ...
 } 
 @Test public void rotationRetainsAmountAndRecipient() {
 // ...
 } 
 
 @Test public void serverErrorShowsTryAgainLater() {
 // ...
 }

Presenter View Fake Model Robot Test

Presenter View Fake Model Robot Test Test Test Test Test Test Test Test Test Test Test

PaymentRobot payment = new PaymentRobot();
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 result.isSuccess();

class PaymentRobot {
 PaymentRobot amount(long amount) {A
 // ...
 }B
 
 PaymentRobot recipient(String recipient) {B
 // ...
 }C
 
 ResultRobot send() {C
 // ...
 }D
 }A
 
 class ResultRobot {
 ResultRobot isSuccess() {D
 // ...
 }F
 }E

class PaymentRobot {
 fun amount(amount: Long): PaymentRobot {A
 // ...
 }B 
 fun recipient(recipient: String): PaymentRobot {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess(): ResultRobot {D
 // ...
 }F
 }E

val
 
 val PaymentRobot payment = new PaymentRobot();
 ResultRobot result = payment
 .amount(42_00)
 .recipient("foo@bar.com")
 .send();
 result.isSuccess();

val payment = PaymentRobot()
 
 val result = payment
 .amount(4200)
 .recipient("foo@bar.com")
 .send()
 
 result.isSuccess()

class PaymentRobot {
 fun amount(amount: Long): PaymentRobot {A
 // ...
 }B 
 fun recipient(recipient: String): PaymentRobot {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess(): ResultRobot {D
 // ...
 }F
 }E

class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment() = PaymentRobot() class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot() class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

val payment = PaymentRobot()
 
 val result = payment
 .amount(4200)
 .recipient("foo@bar.com")
 .send()
 
 result.isSuccess()

val result = payment {
 amount(4200)
 recipient("foo@bar.com")
 }.send()
 
 result.isSuccess()

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(): ResultRobot {C
 // ...
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(func: ResultRobot.() -> Unit): ResultRobot {C
 // ... return ResultRobot().apply { func() }
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(func: ResultRobot.() -> Unit): ResultRobot {C
 // ... return ResultRobot().apply { func() }
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

val result = payment {
 amount(4200)
 recipient("foo@bar.com")
 }.send()
 
 result.isSuccess()

payment {
 amount(4200)
 recipient("foo@bar.com")
 }.send {
 isSuccess()
 }A

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 fun send(func: ResultRobot.() -> Unit): ResultRobot {C
 // ... return ResultRobot().apply { func() }
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 infix fun send(func: ResultRobot.() -> Unit): ResultRobot {C
 // ... return ResultRobot().apply { func() }
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() } class PaymentRobot {
 fun amount(amount: Long) {A
 // ...
 }B 
 fun recipient(recipient: String) {B
 // ...
 }C
 
 infix fun send(func: ResultRobot.() -> Unit): ResultRobot {C
 // ... return ResultRobot().apply { func() }
 }D
 }A 
 class ResultRobot {
 fun isSuccess() {D
 // ...
 }F
 }E

payment {
 amount(4200)
 recipient("foo@bar.com")
 } send {
 isSuccess()
 }A .

payment {
 amount(4200)
 recipient("foo@bar.com")
 } send {
 isSuccess()
 }A

payment { 
 amount(4200)
 recipient("foo@bar.com")
 } send {
 isSuccess()
 }A Screen entry point Actions and/or assertions Screen transition Actions and/or assertions

Exception in thread "main" java.lang.AssertionError: Expected but found at ResultRobot.isSuccess(ResultRobot.kt:18) at PaymentTest$singleFundingSourceSuccess$2.invoke(PaymentTest.kt:27) at PaymentRobot.send(PaymentRobot.kt:13) at PaymentTest.singleFundingSourceSuccess(PaymentTest.kt:8)

payment {
 amount(4200)
 recipient("foo@bar.com") } send { isSuccess() }A

payment {
 amount(4200)
 recipient("foo@bar.com") send() } birthday { date(1970, 1, 1) next() } ssn { value("123-56-7890") next() } result { isSuccess() }A

fun payment(func: PaymentRobot.() -> Unit) = PaymentRobot().apply { func() }

fun payment(func: PaymentRobot.() -> Unit) { onView(withText("$0")).check(visible()) return PaymentRobot().apply { func() } }

fun payment(func: PaymentRobot.() -> Unit) { onView(withText("$0")).check(visible()) return PaymentRobot().apply { func() } } fun birthdate(func: BirthdateRobot.() -> Unit) { onView(withText("Enter birth date:")).check(visible()) return BirthdateRobot().apply { func() } } fun ssn(func: SsnRobot.() -> Unit) { onView(withText("Enter social security number:")).check(visible()) return SsnRobot().apply { func() } } fun result(func: ResultRobot.() -> Unit) { return ResultRobot().apply { func() } }

Presenter View Model Robot Test

Presenter View Model Robot Test Application Architecture

Presenter View Model Robot Test UI Test Architecture

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