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Test set: com.hc.jee.demo3.Demo3ApplicationTests
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Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.329 s <<< FAILURE! - in com.hc.jee.demo3.Demo3ApplicationTests
initializationError(com.hc.jee.demo3.Demo3ApplicationTests)  Time elapsed: 0.007 s  <<< ERROR!
java.lang.IllegalStateException: Unable to find a @SpringBootConfiguration, you need to use @ContextConfiguration or @SpringBootTest(classes=...) with your test