flexing

tests/test_languages/fixtures/java_tracer_e2e/src/main/java/com/example/Workload.java

@@ -1,5 +1,8 @@
 package com.example;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Workload {
 
     public static int computeSum(int n) {
@@ -10,15 +13,53 @@ public class Workload {
         return sum;
     }
 
+    public static String repeatString(String s, int count) {
+        String result = "";
+        for (int i = 0; i < count; i++) {
+            result = result + s;
+        }
+        return result;
+    }
+
+    public static List<Integer> filterEvens(List<Integer> numbers) {
+        List<Integer> result = new ArrayList<>();
+        for (int n : numbers) {
+            if (n % 2 == 0) {
+                result.add(n);
+            }
+        }
+        return result;
+    }
+
+    public int instanceMethod(int x, int y) {
+        return x * y + computeSum(x);
+    }
+
     public static void main(String[] args) {
-        // Run with large inputs so JFR can capture CPU samples.
+        // Run methods with large inputs so JFR can capture CPU samples.
         // Small inputs finish too fast (<1ms) for JFR's 10ms sampling interval.
-        for (int round = 0; round < 100; round++) {
+        for (int round = 0; round < 1000; round++) {
             computeSum(100_000);
+            repeatString("hello world ", 1000);
+
+            List<Integer> nums = new ArrayList<>();
+            for (int i = 1; i <= 10_000; i++) nums.add(i);
+            filterEvens(nums);
+
+            Workload w = new Workload();
+            w.instanceMethod(100_000, 42);
         }
 
         // Also call with small inputs for variety in traced args
         System.out.println("computeSum(100) = " + computeSum(100));
+        System.out.println("repeatString(\"ab\", 3) = " + repeatString("ab", 3));
+
+        List<Integer> small = new ArrayList<>();
+        for (int i = 1; i <= 10; i++) small.add(i);
+        System.out.println("filterEvens(1..10) = " + filterEvens(small));
+
+        Workload w = new Workload();
+        System.out.println("instanceMethod(5, 3) = " + w.instanceMethod(5, 3));
 
         System.out.println("Workload complete.");
     }

tests/test_languages/test_java/test_java_tracer_e2e.py

@@ -81,11 +81,14 @@ class TestTracingAgent:
         conn = sqlite3.connect(str(trace_db))
         try:
             rows = conn.execute("SELECT function, classname, descriptor, length(args) FROM function_calls").fetchall()
-            assert len(rows) >= 2, f"Expected at least 2 captured invocations, got {len(rows)}"
+            assert len(rows) >= 5, f"Expected at least 5 captured invocations, got {len(rows)}"
 
             # Check that specific methods were captured
             functions = {row[0] for row in rows}
             assert "computeSum" in functions
+            assert "repeatString" in functions
+            assert "filterEvens" in functions
+            assert "instanceMethod" in functions
 
             # Verify all rows have non-empty args blobs
             for row in rows:
@@ -94,7 +97,7 @@ class TestTracingAgent:
             # Verify metadata
             metadata = dict(conn.execute("SELECT key, value FROM metadata").fetchall())
             assert "totalCaptures" in metadata
-            assert int(metadata["totalCaptures"]) >= 2
+            assert int(metadata["totalCaptures"]) >= 5
         finally:
             conn.close()
 
@@ -133,7 +136,7 @@ class TestTracingAgent:
 
         conn = sqlite3.connect(str(trace_db))
         try:
-            # computeSum is called 2 times (direct calls in main)
+            # computeSum is called 4 times (2 direct + 2 from instanceMethod)
             compute_count = conn.execute(
                 "SELECT COUNT(*) FROM function_calls WHERE function = 'computeSum'"
             ).fetchone()[0]
@@ -196,6 +199,7 @@ class TestReplayTestGeneration:
         assert "import org.junit.jupiter.api.Test;" in content
         assert "ReplayHelper" in content
         assert "replay_computeSum_0" in content
+        assert "replay_repeatString_0" in content
 
     def test_metadata_parsing(self, compiled_workload: Path, trace_db: Path, tmp_path: Path) -> None:
         """Test that metadata comments are correctly parsed from generated tests."""
@@ -292,6 +296,7 @@ class TestJavaTracerOrchestration:
         assert len(workload_files) == 1
         content = workload_files[0].read_text(encoding="utf-8")
         assert "replay_computeSum" in content
+        assert "replay_instanceMethod" in content
 
     def test_package_detection(self) -> None:
         """Test that package detection finds Java packages from source files."""

tests/test_languages/test_java/test_java_tracer_integration.py

@@ -88,6 +88,7 @@ class TestFunctionDiscoveryFromReplayTests:
                 assert func.file_path == file_path
 
         assert "computeSum" in all_func_names
+        assert "repeatString" in all_func_names
 
     def test_discover_tests_for_replay_tests(self, traced_workload: tuple) -> None:
         """Test that test discovery maps replay tests to source functions."""
@@ -111,6 +112,7 @@ class TestFunctionDiscoveryFromReplayTests:
             matched_func_names.add(func_name)
 
         assert "computeSum" in matched_func_names, f"computeSum not found in: {result.keys()}"
+        assert "repeatString" in matched_func_names, f"repeatString not found in: {result.keys()}"
 
         # Each function should have at least one test
         for func_name, test_infos in result.items():