Random Test Case Generator for Nose Assertions

This function randomly selects an assertion function from the nose library and generates a test case. The test case will perform different operations based on the selected assertion function, such as comparing values, checking types, throwing exceptions, etc.

Technology Stack : This function randomly selects an assertion function from the nose library and generates a test case. The test case will perform different operations based on the selected assertion function, such as comparing values, checking types, throwing exceptions, etc.

Code Type : The type of code

Code Difficulty : Intermediate

                
                    
import nose
import random

def test_random_function():
    # Function to randomly select a nose feature and generate a test function
    features = [
        'assert_equal', 'assert_not_equal', 'assert_true', 'assert_false',
        'assert_is', 'assert_is_not', 'assert_in', 'assert_not_in',
        'assert_is_instance', 'assert_raises', 'assert_raises_regex',
        'assert_list_equal', 'assert_dict_equal', 'assert_set_equal',
        'assert_tuple_equal', 'assert_same_elements', 'assert_contains_substring'
    ]
    
    selected_feature = random.choice(features)
    
    # Construct the test function based on the selected feature
    if selected_feature == 'assert_equal':
        def test_example(self):
            nose.tools.assert_equal(1 + 1, 2)
    elif selected_feature == 'assert_not_equal':
        def test_example(self):
            nose.tools.assert_not_equal(1, 2)
    elif selected_feature == 'assert_true':
        def test_example(self):
            nose.tools.assert_true(1 == 1)
    elif selected_feature == 'assert_false':
        def test_example(self):
            nose.tools.assert_false(1 == 2)
    elif selected_feature == 'assert_is':
        def test_example(self):
            nose.tools.assert_is(1, 1)
    elif selected_feature == 'assert_is_not':
        def test_example(self):
            nose.tools.assert_is_not(1, 2)
    elif selected_feature == 'assert_in':
        def test_example(self):
            nose.tools.assert_in(1, [1, 2, 3])
    elif selected_feature == 'assert_not_in':
        def test_example(self):
            nose.tools.assert_not_in(4, [1, 2, 3])
    elif selected_feature == 'assert_is_instance':
        def test_example(self):
            nose.tools.assert_is_instance(1, int)
    elif selected_feature == 'assert_raises':
        def test_example(self):
            nose.tools.assert_raises(ValueError, lambda: int('a'))
    elif selected_feature == 'assert_raises_regex':
        def test_example(self):
            nose.tools.assert_raises_regex(ValueError, 'invalid input', lambda: int('a'))
    elif selected_feature == 'assert_list_equal':
        def test_example(self):
            nose.tools.assert_list_equal([1, 2], [1, 2])
    elif selected_feature == 'assert_dict_equal':
        def test_example(self):
            nose.tools.assert_dict_equal({'a': 1}, {'a': 1})
    elif selected_feature == 'assert_set_equal':
        def test_example(self):
            nose.tools.assert_set_equal({1, 2}, {1, 2})
    elif selected_feature == 'assert_tuple_equal':
        def test_example(self):
            nose.tools.assert_tuple_equal((1, 2), (1, 2))
    elif selected_feature == 'assert_same_elements':
        def test_example(self):
            nose.tools.assert_same_elements([1, 2], [2, 1])
    elif selected_feature == 'assert_contains_substring':
        def test_example(self):
            nose.tools.assert_contains_substring('hello', 'ell')
    else:
        def test_example(self):
            nose.tools.assert_equal(1, 1)
    
    # Return the test function
    return test_example

# Example usage:
# test_func = test_random_function()
# from nose.plugins import Plugin
# plugin = Plugin()
# plugin.addTests([test_func])
# plugin.run()