Order of profiles in tests is not preserved

[tomasz0801]

Annotation @ActiveProfiles doesn't preserve the order of defined profiles in tests in spring boot 2.3.5.RELEASE
I have defined two profiles (europe and belgium) and marked test class with @ActiveProfiles({"europe", "belgium"})
Profiles have been loaded in alphabetical order instead of defined in the annotation.

I wrote test for that case.
It fails due to unexpected behavior

Log from context startup during test execution
2020-10-31 02:00:03.091 INFO 15818 --- [ main] c.e.d.DemoProfilesApplicationTests : The following profiles are active: belgium,europe

In spring boot 2.3.4.RELEASE same test pass

[wilkinsona]

Thanks for the report. This is caused by a regression in Spring Framework due to the changes for #25973. We'll transfer this issue to the Framework project so that they can take a look.

@sbrannen The ordering of profiles is important and I think it should be preserved. For example, in Spring Boot the ordering of the profiles determines which profile-specific configuration file takes precedence. IMO, it's correct that a cache miss should occur when the same profiles are activated but in a different order.