Spring Boot Test ignores logging.level

Okay what I did now, in all modules I configured as follows:

src/main/resources:
I use logging configuration in application.properies like logging.level.* as described in the question.

src/test/resources:
I use logback-test.xml like:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <include resource="org/springframework/boot/logging/logback/base.xml" />
    <logger name="*.myapp" level="error" />
    <logger name="org.springframework.core " level="error" />
    <logger name="org.springframework.beans" level="error" />
    <logger name="org.springframework.context" level="error" />
    <logger name="org.springframework.transaction" level="error" />
    <logger name="org.springframework.web" level="error" />
    <logger name="org.springframework.test" level="error" />
    <logger name="org.hibernate" level="error" />
</configuration>

But I still don't understand, why in few modules I could use application.properties, but in another module it ignores ... But for now it works for me as it is.

But maybe few hints with background knowledge are still welcome.

I dont mark my answer as solution, cos it still feels like a workaround.

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <include resource="org/springframework/boot/logging/logback/base.xml" />
    <logger name="org.springframework" level="INFO"/>
</configuration>

As a fast fix, I put logback.xml file with the above content in src/test/resources and it works.

To enable application.properties need to add an annotation @SpringBootTest to test class, read more here.