Spring Boot JUnit和@TestPropertySource使用多个属性文件

Question

Spring Boot 2.0.3.RELEASE

Have more than one properties file to deal with .. the application.properties and application-DEV.properties

using the annotation @TestPropertySource in a Junit test I can only get it to read one file:

@TestPropertySource("file:C:\\Users\\user\\eclipse-workspace\\one2one_httpCall\\src\\main\\resources\\application-DEV.properties")

works as expected

However I need two properties file I did see the locations option but did not see an example of more than one file .. tried different options but none worked:

@TestPropertySource(locations = "classpath:application-DEV.properties;classpath:application.properties")

Tried a couple of ways I am not posting and even tried using @TestPropertySource twice but error saying u cannot use it twice.

tried using @PropertySource since u can use it twice but did not work since this is a Junit test. Looked at a bunch of questions on stacktrace + others and tried but no luck.

So my question is how to use two properties files via the @TestPropertySource annotation?

Answer 1

If you look inside the definition of @TestPropertySource , you will see that locations is of type String [] . Therefore, if you need to pass it multiple values, you must do so with an array:

@TestPropertySource(locations = { "classpath:application.properties", "classpath:application-DEV.properties" })

Also, pay attention to the order in which you declare your properties files. As stated in the TestPropertySource docs :

Each location will be added to the enclosing Environment as its own property source, in the order declared .

So you would probably want to declare your DEV properties after to avoid them being overriden by your production properties.