JS: Add test

Author: asgerf

javascript/ql/test/library-tests/TypeTracking/TypeTracking.ql

@@ -34,6 +34,7 @@ from Locatable loc, File f, int l, string name, string msg
 where
   expected(loc, f, l, name) and
   not actual(_, f, l, name) and
+  name != "none" and
   msg = "Failed to track " + name + " here."
   or
   actual(loc, f, l, name) and

javascript/ql/test/library-tests/TypeTracking/raw-await.js

@@ -0,0 +1,32 @@
+const lib = require('testlib');
+
+function foo() {
+    return lib.foo(); // name: raw-await-source
+}
+
+async function test() {
+  const x = await foo();
+  const y = await x;
+  const z = await y;
+  z; // track: raw-await-source
+}
+
+async function exceptionThrower() {
+    throw {}; // name: raw-await-err
+}
+
+async function exceptionReThrower() {
+    const x = await exceptionThrower();
+    const y = x.catch(err => {
+        err; // track: none
+    });
+    return y;
+}
+
+async function exceptionCatcher() {
+    try {
+        await exceptionThrower();
+    } catch (err) {
+        err; // track: raw-await-err
+    }
+}