MethodAtlasApp

MethodAtlasApp is a small standalone CLI that scans Java source trees for JUnit test methods and prints per-method statistics:

• FQCN (fully-qualified class name)
• method name
• LOC (lines of code, based on the AST source range)
• @Tag values attached to the method (supports repeated @Tag and @Tags({...}))

It supports two output modes:

• CSV (default)
• Plain text (-plain as the first CLI argument)

Build & run

Assuming you have a runnable JAR (e.g. methodatlas.jar):

java -jar methodatlas.jar [ -plain ] <path1> [<path2> ...]

• If no paths are provided, the current directory (i.e., .) is scanned.
• Multiple root paths are supported.

Output modes

CSV (default)

• Prints a header line
• Each record contains values only
• Tags are semicolon-separated in the tags column (empty if no tags)

Example:

Feb 11, 2026 1:33:35 AM org.egothor.methodatlas.MethodAtlasApp scanRoot
INFO: Scanning /tmp/junit-15560885133010516491 for JUnit files
fqcn,method,loc,tags
com.acme.tests.SampleOneTest,alpha,8,fast;crypto
com.acme.tests.SampleOneTest,beta,6,param
com.acme.tests.SampleOneTest,gamma,4,nested1;nested2
com.acme.other.AnotherTest,delta,3,

Plain text (-plain)

• Prints one line per detected method:
  • FQCN, method, LOC=<n>, TAGS=<tag1;tag2;...>
• If a method has no tags, it prints TAGS=-

Example:

Feb 11, 2026 1:33:35 AM org.egothor.methodatlas.MethodAtlasApp scanRoot
INFO: Scanning /tmp/junit-12139245189413750595 for JUnit files
com.acme.tests.SampleOneTest, alpha, LOC=8, TAGS=fast;crypto
com.acme.tests.SampleOneTest, beta, LOC=6, TAGS=param
com.acme.tests.SampleOneTest, gamma, LOC=4, TAGS=nested1;nested2
com.acme.other.AnotherTest, delta, LOC=3, TAGS=-

Notes

• The scanner looks for files ending with *Test.java.
• JUnit methods are detected by annotations such as:
  • @Test
  • @ParameterizedTest
  • @RepeatedTest
• Tag extraction supports:
  • @Tag("x") (including repeated @Tag)
  • @Tags({ @Tag("x"), @Tag("y") })