Add remoteflowsoucre test

python/ql/test/experimental/meta/RemoteFlowSourceTest.qll

@@ -0,0 +1,20 @@
+import python
+import semmle.python.dataflow.new.RemoteFlowSources
+import TestUtilities.InlineExpectationsTest
+private import semmle.python.dataflow.new.internal.PrintNode
+
+module SourceTest implements TestSig {
+  string getARelevantTag() { result = "source" }
+
+  predicate hasActualResult(Location location, string element, string tag, string value) {
+    exists(location.getFile().getRelativePath()) and
+    exists(RemoteFlowSource rfs |
+      location = rfs.getLocation() and
+      element = rfs.toString() and
+      value = prettyNode(rfs) and
+      tag = "source"
+    )
+  }
+}
+
+import MakeTest<SourceTest>