kaivalnp commented on code in PR #932:
URL: https://github.com/apache/lucene/pull/932#discussion_r931869194


##########
lucene/core/src/test/org/apache/lucene/util/hnsw/KnnGraphTester.java:
##########
@@ -730,4 +794,61 @@ protected int comparePivot(int j) {
       return Float.compare(score[pivot], score[j]);
     }
   }
+
+  private static class SelectiveQuery extends Query {
+
+    public float selectivity = 1f;
+    private FixedBitSet selectedBits;
+    private long cost;
+
+    @SuppressForbidden(reason = "Uses Math.random()")

Review Comment:
   Since the test is run from a static context (main method), I'm unable to use 
`LuceneTestCase`
   
   We can:
   - Keep using Math.random and suppress warnings
   - Change the code a bit to test using `run` function instead of `main` (not 
depend on instantiating `KnnGraphTester`)
   
   The second might be better for reproducibility (ability to run using seed)
   
   Any suggestions on this?



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