Firstly, application.properties in the @PropertySource should read application-test.properties if that's what the file is named (matching these things up matters):
@PropertySource("classpath:application-test.properties ")
That file should be under your /src/test/resources classpath (at the root).
I don't understand why you'd specify a dependency hard coded to a file called application-test.properties. Is that component only to be used in the test environment?
The normal thing to do is to have property files with the same name on different classpaths. You load one or the other depending on whether you are running your tests or not.
In a typically laid out application, you'd have:
src/test/resources/application.properties
and
src/main/resources/application.properties
And then inject it like this:
@PropertySource("classpath:application.properties")
The even better thing to do would be to expose that property file as a bean in your spring context and then inject that bean into any component that needs it. This way your code is not littered with references to application.properties and you can use anything you want as a source of properties. Here's an example: how to read properties file in spring project?