From d75645e89adf5cfde32fbec945c7096612aec930 Mon Sep 17 00:00:00 2001
From: Napalys Klicius <napalys@github.com>
Date: Mon, 28 Apr 2025 11:44:30 +0200
Subject: [PATCH] Added test case for class harness containing failing test

---
 .../ql/test/library-tests/TripleDot/class.js  | 87 +++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 javascript/ql/test/library-tests/TripleDot/class.js

diff --git a/javascript/ql/test/library-tests/TripleDot/class.js b/javascript/ql/test/library-tests/TripleDot/class.js
new file mode 100644
index 000000000000..6f8426262e5e
--- /dev/null
+++ b/javascript/ql/test/library-tests/TripleDot/class.js
@@ -0,0 +1,87 @@
+import 'dummy';
+
+class Foo {
+    constructor() {
+        this.size = 1024 * 1024 * 4;
+        this.buffer = null;
+    }
+
+    someSink() {
+        sink(this.buffer); // $ MISSING: hasTaintFlow=h1.1
+    }
+
+    setData2(data) {
+        this.buffer = Buffer.from(data);
+    }
+
+    setData() {
+        this.setData2(source("h1.1"));
+    }
+
+    allocate_buffers () {
+        this.buffer = new Buffer(this.size);
+    }
+}
+
+// Tests pass without allocate_buffers function present in the class
+class Baz {
+    constructor() {
+        this.size = 1024 * 1024 * 4;
+        this.buffer = null;
+    }
+
+    someSink() {
+        sink(this.buffer); // $ hasTaintFlow=h1.2
+    }
+
+    setData2(data) {
+        this.buffer = Buffer.from(data);
+    }
+
+    setData() {
+        this.setData2(source("h1.2"));
+    }
+}
+
+// Tests pass with single setData instead of setData -> setData2
+class Baz {
+    constructor() {
+        this.size = 1024 * 1024 * 4;
+        this.buffer = null;
+    }
+
+    someSink() {
+        sink(this.buffer); // $ hasTaintFlow=h1.3
+    }
+
+    setData() {
+        this.buffer = Buffer.from(source("h1.3"));
+    }
+
+    allocate_buffers () {
+        this.buffer = new Buffer(this.size);
+    }
+}
+
+// Tests pass taking hardcoded value instead of class member
+class Foz {
+    constructor() {
+        this.buffer = null;
+    }
+
+    someSink() {
+        sink(this.buffer); // $ hasTaintFlow=h1.1
+    }
+
+    setData2(data) {
+        this.buffer = Buffer.from(data);
+    }
+
+    setData() {
+        this.setData2(source("h1.1"));
+    }
+
+    allocate_buffers () {
+        this.buffer = new Buffer(1024 * 1024 * 4);
+    }
+}