Function test_for_loop

pythonwhat/test_funcs/test_compound_statement.py:89–141

Test parts of the for loop. This test function will allow you to extract parts of a specific for loop and perform a set of tests specifically on these parts. A for loop consists of two parts: the sequence, `for_iter`, which is the values over which are looped, and the `body`. A for loop

(state, index=1, for_iter=None, body=None, orelse=None)

def test_for_loop(state, index=1, for_iter=None, body=None, orelse=None):
    """Test parts of the for loop.

    This test function will allow you to extract parts of a specific for loop and perform a set of tests
    specifically on these parts. A for loop consists of two parts: the sequence, `for_iter`, which is the
    values over which are looped, and the `body`. A for loop can have a else part as well, `orelse`, but
    this is almost never used.::

        for i in range(10):
            print(i)

    Has :code:`range(10)` as the sequence and :code:`print(i)` as the body.

    Args:
      index (int): index of the function call to be checked. Defaults to 1.
      for_iter: this argument holds the part of code that will be ran to check the sequence of the for loop.
        It should be passed as a lambda expression or a function. The functions that are ran should
        be other pythonwhat test functions, and they will be tested specifically on only the sequence part of
        the for loop.
      body: this argument holds the part of code that will be ran to check the body of the for loop.
        It should be passed as a lambda expression or a function. The functions that are ran should
        be other pythonwhat test functions, and they will be tested specifically on only the body of
        the for loop.
      orelse: this argument holds the part of code that will be ran to check the else part of the for loop.
        It should be passed as a lambda expression or a function. The functions that are ran should
        be other pythonwhat test functions, and they will be tested specifically on only the else part of
        the for loop.

    :Example:
        Student code::

            for i in range(10):
                print(i)

        Solution code::

            for n in range(10):
                print(n)

        SCT::

            test_for_loop(1,
                for_iter = test_function("range"),
                body = test_expression_output(context_val = [5])

        This SCT will evaluate to True as the function :code:`range` is used in the sequence and the function
        :code:`test_exression_output()` will pass on the body code.
    """
    state = check_node(state, "for_loops", index - 1, "{{ordinal}} for loop")

    multi(check_part(state, "iter", "sequence part"), for_iter)
    multi(check_part(state, "body", "body"), body)
    multi(check_part(state, "orelse", "else part"), orelse)


def test_while_loop(state, index=1, test=None, body=None, orelse=None):