Get the Most out of Testing with Spring 4.2

1. SPRINGONE2GX WASHINGTON, DC © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution -NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Get the Most out of Testing with Spring 4.2 Sam Brannen @sam_brannen Nicolas Fränkel @nicolas_frankel

2. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Sam Brannen • Spring and Enterprise Java Consultant @ Swiftmind • Java Developer for over 17 years • Spring Framework Core Committer since 2007 • Component lead for spring-test • Creator of @AliasFor • Spring Trainer • Speaker on Spring, Java, and testing • Swiss Spring User Group Lead 2

3. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ 3 Your experts for Spring and Enterprise Java Areas of expertise • Spring * • Java EE • Software Architecture • Software Engineering Best Practices Where you find us • Zurich, Switzerland • @swiftmind • http://www.swiftmind.com

4. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Nicolas Fränkel • Developer & Architect • Consultant • Teacher & Trainer • Blogger • Book Author 4

5. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Learning Vaadin 7 Integration Testing from the Trenches 5 Nicolas’ Books

6. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Agenda • Spring Events App • New in Spring 4.2 • JUnit vs. TestNG • Spring Boot Tests • Spring Security Tests • Tips & Tricks 6

9. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ The Spring Events Example Application • Spring Boot powered web app • Simple POJO domain model: Event • Transactional service layer • Spring Data JPA repository layer • Spring @MVC +Thymeleaf & REST presentation layer • Spring Security • https://github.com/sbrannen/spring-events 9

11. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ @AliasFor • New in Spring Framework 4.2, refined in 4.2.1  • Used to declare aliases between attributes within an annotation • e.g., locations and value in @ContextConfiguration, or path and value in @RequestMapping • Used in composed annotations to declare explicit overrides of attributes in meta-annotations • e.g., @Get, @Post, @GetJson, @TransactionalService • See Spring Composed project for examples • https://github.com/sbrannen/spring-composed 11

12. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Composable Annotations w/ Overrides: pre 4.2 • Composable annotations can override attributes of meta-annotations • Purely convention-based • Matched by attribute name and type • Can lead to potential naming conflicts • Cannot override the value attribute 12

13. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Convention-based Attribute Override @Target(TYPE) @Retention(RUNTIME) @ContextConfiguration @Transactional public @interface TransactionalTest { String[] locations() default {}; } @TransactionalTest(locations = "/order-test-config.xml") public class OrderRepositoryTests { } 13 seen as locations in @ContextConfiguration redeclares locations attribute declares locations attribute

14. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Conflict w/ Convention-based Attribute Override @Target(TYPE) @Retention(RUNTIME) @ContextConfiguration @TestPropertySource @Transactional public @interface TransactionalTest { String[] locations() default {}; } @TransactionalTest(locations = "/order-test-config.xml") public class OrderRepositoryTests { } 14 both declare locations attribute ambiguous which one?!

15. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Composable Annotations w/ Overrides: post 4.2 • Composable annotations can explicitly override attributes of meta-annotations, even transitively • Attributes within an annotation that effectively override the same attribute are treated as implicit aliases for each other • Explicitly declared via @AliasFor • Can avoid potential naming conflicts • Can even override the value attribute 15

16. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Avoid Attribute Override Conflict w/ @AliasFor (1) @ContextConfiguration @TestPropertySource @Transactional public @interface TransactionalTest { @AliasFor(annotation = ContextConfiguration.class, attribute = "locations") String[] xmlFiles() default {}; @AliasFor(annotation = TestPropertySource.class, attribute = "locations") String[] propFiles() default {}; } 16 both declare locations attribute explicit explicit

17. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Avoid Attribute Override Conflict w/ @AliasFor (2) @TransactionalTest( xmlFiles = "/order-test-config.xml", propFiles = "/order-test.properties" ) public class OrderRepositoryTests { } 17 seen as locations in @ContextConfiguration seen as locations in @TestPropertySource

18. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Embedded Databases – What’s in a Name? Q: Why should I care what my embedded database is named? A: Because you’ll run into problems if your DataSource config is imported from multiple places within your test suite. Q: Why? Doesn’t it just create a new instance of the database? A: Recreating an embedded database within the same JVM doesn’t actually create anything: a second attempt simply connects to the existing one. Q: Ummmm… What?! A: When you connect to an embedded database, it gets created if it doesn’t already exist; otherwise, you just connect to the existing instance. Assigning each one a unique name results in different JDBC connection URLs and thus different instances. 18

19. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Unique Names for Embedded Databases 19 • EmbeddedDatabaseBuilder • setName() – since 3.0 • generateUniqueName() – since 4.2 • <jdbc:embedded-database> • id – used as name since 3.0 o but bad since the id is usually “dataSource”... i.e., not unique • database-name – since 4.2 • generate-name – since 4.2

20. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Ex: Embedded Database in Java Config 20 @Bean public DataSource dataSource() { return new EmbeddedDatabaseBuilder() .generateUniqueName(true) .addScript("schema.sql") .addScript("user_data.sql") .build(); } New in Spring 4.2

21. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Ex: Embedded Database XML Config 21 <jdbc:embedded-database id="dataSource" generate-name="true"> <jdbc:script location="classpath:/schema.sql" /> <jdbc:script location="classpath:/user_data.sql" /> </jdbc:embedded-database> New in Spring 4.2

22. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Spring Cleaning • @TransactionConfiguration • Deprecated in 4.2 • @Rollback (and @Commit) now supported at the class level • Use @Transactional qualifiers • AssertThrows • Deprecated in 3.x; gone in 4.2 • JUnit: use @Test(expected = ...) or @Rule ExpectedException • TestNG: use @Test(expectedExceptions = ...) 22

23. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Extension Points • ContextCache • Now a public API with DefaultContextCache implementation • DefaultTestContext, DefaultBootstrapContext, and DefaultCacheAwareContextLoaderDelegate • Now public classes, allowing for custom extensions • TestContextBootstrapper • Now responsible for building the TestContext 23

24. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Spring + JUnit … @Rules! • SpringJUnit4ClassRunner • Serving the community since Spring 2.5 (2007) • But… can’t be used with other runners o JUnit's Parameterized, MockitoJUnitRunner, etc. • SpringClassRule & SpringMethodRule • Since Spring 4.2 • Can be used with any JUnit runner! • Have to be used together • Provide full power of the Spring TestContext Framework 24

25. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Ex: SpringClassRule & SpringMethodRule 25 @RunWith(Parameterized.class) @ContextConfiguration public class ParameterizedSpringRuleTests { @ClassRule public static final SpringClassRule SPRING_CLASS_RULE = new SpringClassRule(); @Rule public final SpringMethodRule springMethodRule = new SpringMethodRule();

26. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ HtmlUnit, Selenium, & Geb • First-class support for HtmlUnit and Selenium in Spring MVC Test • Initially a stand-alone project • Incorporated into spring-test in Spring 4.2 • Page-based web app testing w/o a Servlet container • The Selenium support can also be used with Geb 26

27. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ MockMvc & HtmlUnit WebClient Setup • spring-test (4.2+) & htmlunit (2.18+) • MockMvcWebClientBuilder: several options, simplest case below 27 @Autowired WebApplicationContext wac; WebClient webClient; @Before public void setup() { webClient = MockMvcWebClientBuilder .webAppContextSetup(wac).build(); }

28. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ MockMvc & Selenium WebDriver Setup • spring-test (4.2+) & selenium-htmlunit-driver (2.47+) • MockMvcHtmlUnitDriverBuilder: several options, simplest case below 28 @Autowired WebApplicationContext wac; WebDriver webDriver; @Before public void setup() { webDriver = MockMvcHtmlUnitDriverBuilder .webAppContextSetup(wac).build(); }

29. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Odds & Ends (1) • ReflectionTestUtils • Now you can get or set static fields, including constants • AopTestUtils • Obtain reference to target object hidden behind one or more Spring proxies • Useful if your mock gets proxied (e.g., if your interface is @Transactional) • @DirtiesContext • New BEFORE_METHOD, BEFORE_CLASS, & BEFORE_EACH_TEST_METHOD modes • Requires DirtiesContextBeforeModesTestExecutionListener, enabled by default 29

30. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ ReflectionTestUtils vs. Proper Design • Proper design mandates that we use the most narrow visibility possible. • But it’s sometimes meaningful to test private methods, or change values of final fields, etc. • As a work-around, set the visibility to package (no keyword) and put the test class in the same package. • Guava provides the @VisibleForTesting annotation to document this hack. • ReflectionTestUtils is an alternative to such work-arounds that promotes proper design. 30

31. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Odds & Ends (2) • @Commit • Syntactical sugar for @Rollback(false) • Inlined statements with @Sql • When a dedicated SQL script is overkill • Configured via the new statements attribute • Executed after SQL scripts in same @Sql annotation • Great for one-liners • Spring MVC Test - MvcResult logging • New log(), print(OutputStream), and print(Writer) methods in MockMvcResultHandlers complement existing print() method 31

32. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ 32 @Test @Sql(statements = "DROP TABLE user IF EXISTS") @Sql( scripts = "/test-schema.sql", statements = "INSERT INTO user VALUES ('Dilbert')" ) public void userTest() { // code that uses the test schema and test user } Ex: Inlined @Sql Statements

33. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ 33 @Before public void setUpMockMvc() { mockMvc = MockMvcBuilders .webAppContextSetup(wac) .alwaysDo(print(System.err)) .build(); } Ex: Logging MvcResult to STDERR

35. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ JUnit • De facto testing framework for Java • Most popular library in the entire Java ecosystem • http://bit.ly/1iwwboO 35

36. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ JUnit • Unit for… unit testing! • Test methods are independent and isolated • Simplicity can be both a pro and a con • Can be used for integration testing, too • Test methods are unordered • Unless you use @FixMethodOrder • Single Runner • Spring OR Mockito OR Parameterized • Rules to the rescue 36

37. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ TestNG • Implemented test annotations before JUnit • Richer lifecycle than JUnit • Ordering and grouping of test methods • Concurrent test execution 37

39. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Integration Tests with Spring Boot • @SpringApplicationConfiguration • Like @ContextConfiguration but with SpringApplicationContextLoader • Fully Loaded • @IntegrationTest o IntegrationTestPropertiesListener vs. @TestPropertySource • @WebIntegrationTest • Limit scope of auto-configuration • @TestRepositoryConfig as example 39

41. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Spring Security Test Annotations • WithSecurityContextTestExecutionListener • auto-detected • @WithMockUser • See RestEventsControllerIT in spring-events • @WithUserDetails • @WithSecurityContext 41

42. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Spring Security & MockMvc • apply(springSecurity()) • with(...) • user(...) • authentication(...) • securityContext(...) • httpBasic(...) • perform(...) • formLogin() • logout() 42

44. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Eclipse • Define key bindings for executing tests quickly • Alt + Shift + X… T  too awkward to type frequently! • Sam’s personal settings: o Run JUnit Test  Ctrl + J o Rerun JUnit Test  Ctrl + Shift + J • Set up content assist favorites for common static imports • org.junit.Assert OR org.assertj.core.api.Assertions • org.mockito.Mockito • org.springframework.test.web.servlet.request.MockMvcRequestBuilders • org.springframework.test.web.servlet.result.MockMvcResultMatchers 44

45. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Context Caching • Granularity of context configuration files • Goal: one entry point for production and one for testing • But… not very practical: you’ll need to support different scenarios • Too many constellations  too many contexts • Too few constellations  all tests use the same config • Optimum use of the context cache • Avoid frequent use of @DirtiesContext • Cache statistics are logged at DEBUG level for category org.springframework.test.context.cache 45

46. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Integration Tests: Spring Boot vs. Spring Core • The key differences are speed and scope • @SpringApplicationConfiguration vs. @ContextConfiguration • @EnableAutoConfiguration vs. hand-crafted test @Configuration • See @TestRepositoryConfig in spring-events app 46

47. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Scope • Think about the scope of your test • SUT: Subject Under Test • The larger the SUT, the smaller the number of tests • Mock or fake the dependencies of your SUT 47

48. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ End-to-end Testing • A few nominal scenarios • Very brittle • Use the Page pattern • Decouples the page structure from the test itself 48

49. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Integration Testing Challenges • Speed • Diagnosing the problem • Brittleness 49

50. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Speed • Integration tests are often slow • Execute unit tests before integration tests • No need to run integration tests if unit tests fail • Separate unit and integration tests in the build • Maven: use the maven-failsafe-plugin • Gradle: configure dependent Test tasks o See spring-events for an example 50

51. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Diagnosing the Problem • Consider an e-commerce checkout process • Multi-step use case • Many places where things can go wrong • Use small, focused, and aptly named methods • Order and group methods • According to the steps in the process • Easy with TestNG; possible with JUnit 51

52. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Brittleness • All applications have infrastructure dependencies • Database, web services, file system, time, etc. • External dependencies might be unavailable during testing • Sends a bad signal to developers • Causes builds to fail intermittently • Solution: approximate the production environment • Mock or fake external dependencies 52

53. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Developer & Test Databases • Embedded databases • HSQL, H2, Derby • in-memory or persistent mode • H2 supports compatibility modes for Oracle, MySQL, etc. • Developer databases • Use a single schema per developer if possible • Be aware of the mismatch if you’re not using the same RDBMS in tests as in production 53

54. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Fake Remote Web Services with SoapUI & Spark • SOAP • SoapUI has an API • REST • Spark 54 setPort(5678); get("/hello", (request, response) -> { return "Hello World!"; });

55. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Mock Remote Web Services with Spring • In-memory mocks for remote Web Service endpoints • Don’t actually connect to a server over the network • SOAP – Spring Web Services • spring-ws-test module • MockWebServiceServer • REST – Spring MVC REST • spring-test module • MockRestServiceServer 55

56. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ DataSource pool exhaustion check • Set the maximum number of connections in the pool to 1 • Tests blow up fast if connections are not returned to pool 56

57. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Checking the database when a test fails If a database related test is failing… • Commit your transactions in your tests • Via @Commit or the TestTransaction API • Use a clean setup strategy • Instead of a clean tear down strategy • Use a file based database • Use persistent storage mode for embedded DBs • Inspect database state after failed test 57

58. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Testing is about Saving Money • Not about having more test coverage than your neighbor • Think about ROI 58

60. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Give back to the project that’s given us so much! • JUnit is the de facto standard testing framework in the Java ecosystem • Last major release 10 years ago • Times have changed: Java 8, etc. • Introducing … JUnit Lambda … the crowdfunding campaign to help make the next major release of JUnit a reality • Pitch in if you can, & help spread the word! • @JUnitLambda • https://www.indiegogo.com/projects/junit-lambda 60

62. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Spring Resources Spring Framework http://projects.spring.io/spring-framework Spring Guides http://spring.io/guides Spring JIRA https://jira.spring.io Spring on GitHub https://github.com/spring-projects/spring-framework Stack Overflow spring, spring-test, spring-mvc, spring-boot, spring-security, … 62

63. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ Blogs Spring Blog http://spring.io/blog Swiftmind Blog http://www.swiftmind.com/blog Nicolas Fränkel’s Blog https://blog.frankel.ch 63

64. © 2013-2015 Sam Brannen & Nicolas Fränkel and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ 64 Sam Brannen @sam_brannen www.slideshare.net/sbrannen www.swiftmind.com Learn More. Stay Connected. @springcentral Spring.io/video Nicolas Fränkel @nicolas_frankel