Python: add suggestion for test cases

python/ql/test/experimental/dataflow/coverage/test.py

@@ -12,4 +12,45 @@
 def test_tuple_with_local_flow():
     x = (3, SOURCE)
     y = x[1]
-    SINK(y)
+    SINK(y)
+
+
+# List taken from https://docs.python.org/3/reference/expressions.html
+# 6. Expressions
+# 6.1. Arithmetic conversions
+# 6.2. Atoms
+# 6.2.1. Identifiers (Names)
+# 6.2.2. Literals
+# 6.2.3. Parenthesized forms
+# 6.2.4. Displays for lists, sets and dictionaries
+# 6.2.5. List displays
+# 6.2.6. Set displays
+# 6.2.7. Dictionary displays
+# 6.2.8. Generator expressions
+# 6.2.9. Yield expressions
+# 6.2.9.1. Generator-iterator methods
+# 6.2.9.2. Examples
+# 6.2.9.3. Asynchronous generator functions
+# 6.2.9.4. Asynchronous generator-iterator methods
+# 6.3. Primaries
+# 6.3.1. Attribute references
+# 6.3.2. Subscriptions
+# 6.3.3. Slicings
+# 6.3.4. Calls
+# 6.4. Await expression
+# 6.5. The power operator
+# 6.6. Unary arithmetic and bitwise operations
+# 6.7. Binary arithmetic operations
+# 6.8. Shifting operations
+# 6.9. Binary bitwise operations
+# 6.10. Comparisons
+# 6.10.1. Value comparisons
+# 6.10.2. Membership test operations
+# 6.10.3. Identity comparisons
+# 6.11. Boolean operations
+# 6.12. Assignment expressions
+# 6.13. Conditional expressions
+# 6.14. Lambdas
+# 6.15. Expression lists
+# 6.16. Evaluation order
+# 6.17. Operator precedence