Allow beans in a default package

[sarxos]

Hello @mkouba,

This is PR against FileNotFoundException when beans are located in a default package. Having them in a default package is a bad practice, but it should still be allowed since, from a Java perspective, default package does not differ in any way when compared to a non-default one.

Example stack trace before the fix:

java.lang.RuntimeException: java.io.FileNotFoundException: /SomeRefFactoryX_Bean.class (Permission denied)
    at io.quarkus.runner.RuntimeRunner.run(RuntimeRunner.java:134)
    at io.quarkus.test.junit.QuarkusTestExtension.doJavaStart(QuarkusTestExtension.java:196)
    at io.quarkus.test.junit.QuarkusTestExtension.beforeAll(QuarkusTestExtension.java:80)
    ...
Caused by: java.io.FileNotFoundException: /SomeRefFactoryX_Bean.class (Permission denied)
    at java.io.FileOutputStream.open0(Native Method)
    at java.io.FileOutputStream.open(FileOutputStream.java:270)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:162)
    at io.quarkus.test.junit.QuarkusTestExtension$2.writeClass(QuarkusTestExtension.java:107)
    at io.quarkus.deployment.QuarkusAugmentor.run(QuarkusAugmentor.java:114)
    at io.quarkus.runner.RuntimeRunner.run(RuntimeRunner.java:99)
    ... 39 more

After this PR is applied, the problem is fixed.

[mkouba]

Looks good but we should use this method in ClientProxyGenerator, ObserverGenerator and InterceptorGenerator too. So I would make the method a protected method of the AbstractGenerator and add suffix as a method arg.

[sarxos]

@mkouba Modified per request. Please review.

[mkouba]

@sarxos Looks good but the code style check fails - https://github.com/quarkusio/quarkus/blob/master/CONTRIBUTING.md#ide-config-and-code-style. You should always run a full build before submitting a PR (the code is formatted automatically).

[sarxos]

@mkouba It looks that Azure Pipeline is completed. Please let me know if I should do anything else in regards to this PR.

[mkouba]

@sarxos Merged. Thanks for your contribution.