update docs

library/qtest/src/Operations.qs

@@ -11,8 +11,9 @@
 ///
 /// # Input
 /// ## test_cases
-/// An array of three-arity tuples of the form `(test_name, callable_to_test, expected_result)`.
-/// `callable_to_test` will be called and its result will be compared to `expected_result`.
+/// An array of five-arity tuples of the form `(test_name, num_qubits, qubit_prep_callable, callable_to_test, expected_result)`.
+/// `num_qubits` will be allocated in a qubit array and passed to `qubit_prep_callable` to prepare the state before executing 
+/// `callable_to_test`. Afterwards, `callable_to_test` will be called and its result will be compared to `expected_result`.
 ///
 /// # Example
 /// ```qsharp
@@ -58,8 +59,9 @@ operation TestCases<'Result : Eq + Show > (test_cases : (String, Int, (Qubit[])
 ///
 /// # Input
 /// ## test_cases
-/// An array of three-arity tuples of the form `(test_name, callable_to_test, expected_result)`.
-/// `callable_to_test` will be called and its result will be compared to `expected_result`.
+/// An array of five-arity tuples of the form `(test_name, num_qubits, qubit_prep_callable, callable_to_test, expected_result)`.
+/// `num_qubits` will be allocated in a qubit array and passed to `qubit_prep_callable` to prepare the state before executing 
+/// `callable_to_test`. Afterwards, `callable_to_test` will be called and its result will be compared to `expected_result`.
 ///
 /// # Example
 /// ```qsharp