How to mock property source in spring test?

user_9591240 0
Viewed 3344

I'm writing unit tests for my controller and faced an issue that desktop.properties file doesn't exist on my build server and shouldn't exist there.

I have this main SpringBoot class:

@Configuration
@ComponentScan(basePackages="com.xxx")
@EnableJpaRepositories(basePackages = "com.xxx")
@PropertySources(value = {@PropertySource("classpath:desktop.properties")})
@EnableAutoConfiguration(exclude={JmsAutoConfiguration.class, SecurityAutoConfiguration.class, MultipartAutoConfiguration.class})
@ImportResource(value = {"classpath:multipart.xml","classpath:column-maps-config.xml","classpath:model-ui-name-maps-config.xml"})
public class ApplicationConfig extends WebMvcConfigurerAdapter implements EnvironmentAware, WebApplicationInitializer {
}

This class imports desktop.properties as you can notice.

And I have a test class that starts with:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = ApplicationConfig.class)
@WebAppConfiguration
public class SomeControllerTest {
}

If I my environment doesn't have the desktop.properties file or I simply delete it then tests couldn't be run because ApplicationConfig class can't be instantiated without the dependency.

My question is how can I mock desktop.properties or create a custom configuration for test purposes in order to replace @ContextConfiguration(classes = ApplicationConfig.class) with my test context?

Could you be so kind to give me any hints about it?

P.S. the current project is a quite old one with old versions so this is only one way I found to create tests for controllers with minimum changes to pom.xml

spring-test-mvc spring-test spring java
3 Answers

The @TestPropertySource annotation is the simplest way to configure property source in Spring integration tests.

user_3889800

You could try this test anotations:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = ApplicationConfig.class)
@ActiveProfiles("test")
@WebAppConfiguration
public class SomeControllerTest {
}

Next you have to create specific test desktop.properties in /src/test/resources

user_89448140

You can create a different configuration class for test environment and use it in your test. This test application config class will not have the statement -

@PropertySourcesl(value = {
@PropertySource("classpath:desktop.propertie s ")})

And wherever you are using some of the properties from the above file, use some default values so that it won't fail with any runtime exception.

user_41593890
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