While working on the removal of the Java EE modules and trying to work through which tests need to be updated because of this, I encountered situations where it was not clear as to why a jtreg test was not being run:

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$ make run-test TEST="open/test/jdk/java/lang/StackTraceElement/SerialTest.java"
Building target 'run-test' in configuration 'macosx-x64'
Test selection 'open/test/jdk/java/lang/StackTraceElement/SerialTest.java', will run:
* jtreg:open/test/jdk/java/lang/StackTraceElement/SerialTest.java

Running test 'jtreg:open/test/jdk/java/lang/StackTraceElement/SerialTest.java'
Test results: no tests selected
Report written to /Users/ljanders/Documents/hg-workspaces/openjdk10/remove-javaee/build/macosx-x64/test-results/jtreg_open_test_jdk_java_lang_StackTraceElement_SerialTest_java/html/report.html
Results written to /Users/ljanders/Documents/hg-workspaces/openjdk10/remove-javaee/build/macosx-x64/test-support/jtreg_open_test_jdk_java_lang_StackTraceElement_SerialTest_java
Finished running test 'jtreg:open/test/jdk/java/lang/StackTraceElement/SerialTest.java'
Test report is stored in /Users/ljanders/Documents/hg-workspaces/openjdk10/remove-javaee/build/macosx-x64/test-results/jtreg_open_test_jdk_java_lang_StackTraceElement_SerialTest_java

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Test summary
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   TEST TOTAL PASS FAIL ERROR
   jtreg:open/test/jdk/java/lang/StackTraceElement/SerialTest.java
                                                         0 0 0 0
==============================

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Instead of saying that 'no test was selected', it would be more beneficial to indicate that the test was filtered out due to the lack of the specified module being available.