test: add Go generics and Java enum method coverage tests

[github-actions]

🤖 This is an automated pull request from Repo Assist.

Summary

Adds 6 new unit tests covering two behavioural gaps that were not exercised anywhere in the test suite:

1. Go generic functions (Go 1.18+ type parameters) — verifies that generic type parameters ([T any], [T, U any], [T comparable]) are transparent to complexity analysis and that function names are extracted correctly
2. Java enum methods — verifies that methods declared inside enum bodies receive the qualified EnumName.methodName format and that complexity is computed correctly for enum methods and constructors

Also updates samples/Test.java to include modern Java constructs (records, enums with methods, generic classes) for manual CodeLens verification.

New Tests

Go: Generic functions (3 tests)

Test	Source	Expected
Map[T, U any] with for-range	for i, v := range slice	complexity 1, name "Map"
Filter[T any] with for-range + nested if	if pred(v) at nesting 1	complexity 3 (for+1, nested-if+2)
Identity[T] + Contains[T comparable] in same file	—	0 and 3 respectively

Java: Enum methods (3 tests)

Test	Source	Expected
Direction.isOpposite with if+&& chains	4 if statements + 4 && operators	complexity 4, qualified name
Planet.Planet constructor + Planet.surfaceGravity	trivial constructor + arithmetic	0 + 0, both qualified
Operation enum with abstract method + concrete override	if (x==0 || y==0)	complexity 2

Test Status

npm run compile   ✅  0 errors
npm run lint      ✅  0 warnings
npm run test:unit ✅  186 passing, 0 failing (was 180 before this PR)

Changes

• src/unit/unit.test.ts — 6 new tests in two new describe blocks
• samples/Test.java — added record Range, enum Direction, and class Container<T> sections at the top of the file

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.50%. Comparing base (c7da834) to head (f479ef1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #461   +/-   ##
=======================================
  Coverage   81.50%   81.50%           
=======================================
  Files          13       13           
  Lines        4265     4265           
  Branches      428      429    +1     
=======================================
  Hits         3476     3476           
  Misses        787      787           
  Partials        2        2           

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[Copilot]

Pull request overview

Adds new unit-test coverage for language constructs that previously weren’t exercised by the metrics analyzers (Go 1.18+ generics and Java enum-declared methods/constructors), plus updates the Java sample file for manual VS Code CodeLens verification.

Changes:

• Added Go unit tests verifying generic type parameters don’t affect function name extraction or cognitive complexity calculation.
• Added Java unit tests verifying enum method/constructor qualification (EnumName.methodName) and expected complexity increments.
• Extended samples/Test.java with modern Java constructs (records, enums with methods, generic classes) for manual inspection.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/unit/unit.test.ts	Adds 6 new unit tests for Go generics and Java enum methods/constructors.
samples/Test.java	Updates the Java sample file with modern constructs for manual CodeLens verification.

[askpt]

@copilot Fix the code for all comments in this review thread.

When a review comment includes a suggested change, apply the suggestion exactly.

Do not make changes beyond what is described in the linked review thread.

[Copilot]

@copilot Fix the code for all comments in this review thread.

When a review comment includes a suggested change, apply t...

Fixed in 3059978. The test now:

1. Asserts results.length === 2 — verifying the abstract method is skipped and exactly two concrete implementations are reported
2. Checks every result has name "Operation.apply" — verifying the enum name qualification
3. Finds ADD.apply by complexity === 0 and MULTIPLY.apply by complexity === 2 — selecting each implementation by its expected complexity rather than the first non-zero result