Add method to TestPropertySourceUtils to add properties files directly to the environment [SPR-14131]

[spring-projects-issues]

Andy Wilkinson opened SPR-14131 and commented

TestPropertySourceUtils allows inlined properties to be added straight to a ConfigurableEnvironment but only allows properties file to be added to the environment via a ConfigurableApplicationContext.

In Boot we'd like to create and configure the environment, set it on SpringApplication and then run the application which creates the application context. However,
due to the current functionality provided by TestPropertySourceUtils, we're using an ApplicationContextInitializer to defer configuring the environment until the context has been created (see spring-projects/spring-boot@69b0829) so that we have a ConfigurableApplicationContext to pass to TestPropertySourceUtils.

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Referenced from: commits 463c8f1

[spring-projects-issues]

Sam Brannen commented

Completed in GitHub commit 463c8f1:

Add properties files directly to environment in TestPropertySourceUtils

This commit introduces a new method in TestPropertySourceUtils that
allows properties files to be added directly to the environment without
the need for a ConfigurableApplicationContext upfront; however, a
ResourceLoader is still necessary.

[spring-projects-issues]

Andy Wilkinson commented

That was quick! Thanks, Sam.

[spring-projects-issues]

Sam Brannen commented

You're welcome!

I just hope you're OK with the fact that you still have to provide a ResourceLoader. ;)