Dynamic (#77)

tests/dynamic_fixtures/java/junit_test/Vuln.java

@@ -0,0 +1,28 @@
+// Phase 14 — JUnit test method, vulnerable.
+//
+// The `org.junit.jupiter.api` comment marker tells the Phase 14 shape
+// detector to select `JavaShape::JunitTest`; the actual annotation is
+// the fixture-local `@NyxTest` stub so the file compiles under a
+// dependency-free javac invocation.
+
+// import org.junit.jupiter.api.Test;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+public class Vuln {
+    @Test
+    public void testRun() throws Exception {
+        System.out.print("__NYX_SINK_HIT__\n");
+        String input = System.getenv("NYX_PAYLOAD");
+        if (input == null) input = "";
+        String[] cmd = {"/bin/sh", "-c", "echo hello " + input};
+        Process p = Runtime.getRuntime().exec(cmd);
+        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
+        String line;
+        while ((line = reader.readLine()) != null) {
+            System.out.println(line);
+        }
+        p.waitFor();
+    }
+}