Dynamic (#77)

tests/dynamic_fixtures/class_method/javascript/benign.js

@@ -0,0 +1,15 @@
+// Phase 19 (Track M.1) — class-method benign control for JavaScript.
+//
+// UserService.run routes the input through execFileSync with argv form so
+// the shell never interprets the string or echoes marker bytes.
+'use strict';
+const { execFileSync } = require('child_process');
+
+class UserService {
+    constructor() {}
+    run(input) {
+        return execFileSync('true', [input]).toString();
+    }
+}
+
+module.exports = { UserService };

tests/dynamic_fixtures/class_method/javascript/vuln.js

@@ -0,0 +1,16 @@
+// Phase 19 (Track M.1) — class-method vuln fixture for JavaScript.
+//
+// UserService.run forwards a tainted string straight into child_process.exec,
+// classic OS command injection.  Default ctor — no stubbed deps needed.
+'use strict';
+const { execSync } = require('child_process');
+
+class UserService {
+    constructor() {}
+    run(input) {
+        // SINK: untrusted input → shell
+        return execSync('true ' + input).toString();
+    }
+}
+
+module.exports = { UserService };