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© 2016 Pivotal!2
Automated Testing for Digital Experiences
Mike Koleno, CTO, Solstice
With JUnit 5
PROPRIETARY & CONFIDENTIAL
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ABOUT ME• My name is Mike Koleno • CTO & Head of Enterprise Cloud Computing at Solstice • Enterprise developer & architect for 15+ years
• Consulted on behalf of 40+ Fortune 1000 enterprises
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PROPRIETARY & CONFIDENTIAL
solstice.com
Reimagine Digital Customer Experiences
Design and Build New Digital Products
Help with Digital Operations
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DIGITAL INNOVATION FIRM
PROPRIETARY & CONFIDENTIAL
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AGENDA• It’s All About the Tests • Where we’ve been - through the lens of Java/Spring & JUnit 4 • Where we’re going - JUnit 5 • Slackbot demo
PROPRIETARY & CONFIDENTIAL
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IT’S ALL ABOUT THE TESTS
Tests Have Expanded
Unit Tests have grown into Integration Tests, Functional Tests and
System Tests
Dev & Build Tools
Tools are constantly adding new features for writing/running
tests
TDD & CI/CD
Modern Software Engineering techniques highly value automated
tests
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PROPRIETARY & CONFIDENTIAL
solstice.com
2006 - JUnit 4 introduced
2007 - First iPhone released
2014 - Java 8 released
2013 - Slack launched
2008 - first GitHub repo
PROPRIETARY & CONFIDENTIAL
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JUNIT 4 - THE GAPS
Any Day Now…
JUnit 4 built on Java 5, unable to make
use of modern language features
Developer Friction
Rules, Runner restrictions, etc.
Tight Coupling
Test Writing API coupled with Test
Discovery & Execution API’s
PROPRIETARY & CONFIDENTIAL
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MODULARIZING JUNIT
= JUnit PlatformAPI for Dev & Build Tools
Test discovery and execution
JUnit Jupiter+Contains the developer API’s to write tests
JUnit Vintage+Ability to run legacy tests (JUnit 3 & JUnit 4)
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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LAMBDA SUPPORT@Testvoid lambaTest() { List<Integer> numbers = Arrays.asList(1, 2, 3); assertTrue(numbers .stream() .mapToInt(i -> i) .sum() > 5, () -> "Sum should be greater than 5");}
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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EXTENSION MODEL• Allows developers to hook into different test life cycle callback events via an extension
• BeforeAllCallback, BeforeEachCallback, BeforeTestExecutionCallback • AfterTestExecutionCallback, AfterEachCallback, AfterAllCallback
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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EXTENSION MODEL (CONT)
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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PARAMETERS
@ExtendWith(MockedSystemExtension.class)public class SystemTest {
@Test public void test(final MockedSystem mockedSystem) { final Response response = mockedSystem.target().request().get();
assertEquals(response.getStatusInfo().getFamily(), Response.Status.Family.SUCCESSFUL, () -> "status code is not 2xx"); assertEquals(response.getHeaderString("X-Hello"), "World", () -> "header 'X-Hello' not correct"); }
}
• Allows developers to pass parameters into tests
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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PARAMETERS (CONT)public class MockedSystemExtension implements ParameterResolver {
@Override public boolean supports(final ParameterContext parameterContext, final ExtensionContext extensionContext) throws ParameterResolutionException { return parameterContext.getParameter().getType().isAssignableFrom(MockedSystem.class); }
@Override public Object resolve(final ParameterContext parameterContext, final ExtensionContext extensionContext) throws ParameterResolutionException { final MockedSystem mockedSystem = new MockedSystem();
return mockedSystem; }
}
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
@TestFactory default Collection<DynamicTest> dynamicTestsFromCollection() { return Arrays.asList( dynamicTest("1st dynamic test in test interface", () -> assertTrue(true)), dynamicTest("2nd dynamic test in test interface", () -> assertEquals(4, 2 * 2)) ); }
PROPRIETARY & CONFIDENTIAL
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DYNAMIC TESTS
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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NEW TEST CONVENTIONSPARAMETERIZED TESTS@ParameterizedTest@ValueSource(ints = { 1, 2, 3 })void testWithValueSource(int argument) { assertNotNull(argument);}
@RepeatedTest(10)void repeatedTest() { // ...}
REPEATED TESTS
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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OTHER CHANGES - DISABLING TESTS The @Disabled annotation was added in order to disable test cases and individual tests
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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OTHER CHANGES - DISPLAY NAME The @DisplayName annotation can be used to provide better description names to your tests
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
PROPRIETARY & CONFIDENTIAL
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OTHER CHANGES - @TAG @Tags have replaced @Categories in order to group and filter tests
ARCHITECTURE EXTENSIBILITY
NEW TESTS ANNOTATIONS
STAY IN TOUCH
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PROPRIETARY & CONFIDENTIAL
solstice.com
Mike Koleno [email protected]
solstice.com
Slackbot demo: bit.ly/2r8Ctlf
