.properties file and cucumber report

[aydinserbest]

To generate a Cucumber report with JUnit 5:

1-When I add @ConfigurationParameter(key = "cucumber.publish.enabled", value = "true"), the report is generated.
2-When I remove this annotation and add a cucumber.properties file in the src/test/resources directory with the content cucumber.publish.enabled=true, the report is not generated.
3-However, when I rename the .properties file to junit-platform.properties, the report is generated.
Questions:
1-How does JUnit 5 read the .properties file without any additional code or configuration?
2-How can the effect of renaming the file be explained, i.e., why does it recognize the file immediately when it is named junit-platform.properties?

[mpkorstanje]

I think you may have misunderstood something in the architecture.

As noted in Cucumber JUnit Platform Engine - Configuration Options:

Cucumber receives its configuration from the JUnit Platform. To see how these can be supplied; see the JUnit documentation 4.5. Configuration Parameters. For documentation on Cucumber properties, see Constants.

When using the the JUnit Platform Suite Engine you are using:

Your IDE / Maven / Gradle -> JUnit Platform -> Suite Engine -> Junit Platform -> Cucumber Engine -> Cucumber

So when Cucumber looks up properties, as provided by the JUnit Platform it will look at the following sources in order:

1. Properties from @ConfigurationParameter annotations
2. Properties from Your IDE / Maven / Gradle
3. Properties from the JVM
4. Properties from junit-platform.properties

The JUnit Platform knows to look at junit-platform.properties because it is the provider of all properties. The JUnit Platform also does not know or care about cucumber.properties. Only when renaming it to junit-platform.properties the file is read.

Once junit-team/junit5#3345 lands it will be possible to use @ConfigurationParametersResource("cucumber.properties") in a suite. At that point cucumber.properties would also be read by the JUnit Platform.

[aydinserbest]

The name issue has been resolved, thank you. Additionally, I will review the document.