QL tests for Python queries and libraries.

python/ql/test/library-tests/DuplicateCode/DuplicateStatements.ql

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+/**
+ * @name DuplicateStatements
+ * @description Insert description here...
+ * @kind problem
+ * @problem.severity warning
+ */
+
+import python
+import external.CodeDuplication
+
+predicate mostlyDuplicateFunction(Function f) {
+    exists(int covered, int total, Function other, int percent |
+           duplicateStatements(f, other, covered, total) and
+           covered != total and
+           total > 5 and
+           covered * 100 / total = percent and
+           percent > 80 and
+           not exists(Scope s | s = f.getScope*() | duplicateScopes(s, _, _, _))
+    )
+}
+
+from Stmt s
+where mostlyDuplicateFunction(s.getScope()) and
+not duplicateStatement(s.getScope(), _, s, _)
+select s.toString(), s.getLocation().toString()