add recap cheatsheet

CHEATSHEET.md

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+## Annotations
+
+| Annotation                        | Description
+|-------------------------------    |--------------
+|@RunWith(SpringRunner.class)       | @SpringJUnit4ClassRunner alias; add for junit test support
+|   	                            |
+|@SpringBootTest  	                | Bootstrap test with SpringBoot support, load application.properties;
+|  	                                | specify random or specific port to start app; TestRestTemplate bean made available;
+|                                   |
+|@WebMvcTest   	                    | Use in combination with SpringRunner to load context relevant spring mvc components
+|                                   |
+|@RunWith(MockitoJUnitRunner.class) | Initializes mocks so no need to initMocks(this); automatic validation of framework usage
+|                                   |
+|@DataJpaTest   	                | Loads jpa relevant config; uses in-memory db by default, override with @AutoConfigureTestDatabase
+|   	                            |
+|@AutoConfigureTestDatabase   	    | If you do not want to use auto-configured test database, use this to configure a test db
+|  	                                |
+|@MockBean                          | Use with SpringRunner class to mock components in test
+|                                   |
+|@Mock    	                        | Similar to @MockBean but without spring support; use with MockitoJUnitRunner
+|  	                                |
+|@AutoConfigureMockMvc              | More control of mock-mvc, disable spring security bits etc
+|                                   |
+|@WebFluxTest                       | Use in combination with SpringRunner to load context relevant spring WebFlux components
+|                                   |
+|@DataMongoTest                     | Use in combination with SpringRunner for testing MongoDB components; uses in-memory MongoDB by default