Automating the process of updating test case statuses saves time and reduces human error in quality assurance workflows. By programmatically comparing the `expected` and `actual` results for each test case, you can instantly determine whether each test passes or fails. This challenge will help you practice using Python to efficiently update test case records, a common task when managing large test suites.


import unittest
import user_code
import ast
import re   
import importlib
import csv
import unittest
import importlib

class TestTask(unittest.TestCase):
    def test_pass_status_for_equal_values(self):
        import user_code
        importlib.reload(user_code)
        test_cases = [
            {'id': 1, 'expected': 'A', 'actual': 'A'},
            {'id': 2, 'expected': 100, 'actual': 100},
            {'id': 3, 'expected': True, 'actual': True},
            {'id': 4, 'expected': None, 'actual': None},
        ]
        result = user_code.update_test_case_status([d.copy() for d in test_cases])
        all_pass = all(tc.get('status') == 'PASS' for tc in result)
        _dynamic_test(
            self,
            all_pass,
            "Status set to 'PASS' for all equal 'expected' and 'actual' values.",
            f"Expected all status to be 'PASS', got: {[tc.get('status') for tc in result]}",
        )

    def test_fail_status_for_unequal_values(self):
        import user_code
        importlib.reload(user_code)
        test_cases = [
            {'id': 1, 'expected': 'A', 'actual': 'B'},
            {'id': 2, 'expected': 100, 'actual': 200},
            {'id': 3, 'expected': False, 'actual': True},
            {'id': 4, 'expected': None, 'actual': 0},
        ]
        result = user_code.update_test_case_status([d.copy() for d in test_cases])
        all_fail = all(tc.get('status') == 'FAIL' for tc in result)
        _dynamic_test(
            self,
            all_fail,
            "Status set to 'FAIL' for all unequal 'expected' and 'actual' values.",
            f"Expected all status to be 'FAIL', got: {[tc.get('status') for tc in result]}",
        )

    def test_status_field_added(self):
        import user_code
        importlib.reload(user_code)
        test_cases = [
            {'id': 1, 'expected': 5, 'actual': 5},
            {'id': 2, 'expected': 5, 'actual': 6},
        ]
        result = user_code.update_test_case_status([d.copy() for d in test_cases])
        has_status = all('status' in tc for tc in result)
        _dynamic_test(
            self,
            has_status,
            "All test cases have 'status' field added.",
            f"Not all test cases have 'status' field: {result}",
        )

    def test_existing_fields_untouched(self):
        import user_code
        importlib.reload(user_code)
        test_cases = [
            {'id': 1, 'expected': 1, 'actual': 1, 'custom': 'foo'},
            {'id': 2, 'expected': 2, 'actual': 3, 'meta': 123},
        ]
        orig_keys = [set(tc.keys()) for tc in test_cases]
        result = user_code.update_test_case_status([d.copy() for d in test_cases])
        for i, tc in enumerate(result):
            expected_keys = orig_keys[i] | {'status'}
            _dynamic_test(
                self,
                set(tc.keys()) == expected_keys,
                f"All original fields plus 'status' are present for test case {i+1}.",
                f"Fields changed for test case {i+1}: {tc.keys()} vs {expected_keys}",
            )

def _dynamic_test(test_case, condition, success_message, failure_message):
    if condition:
        test_case._testMethodName = success_message
        test_case.assertTrue(True, success_message)
    else:
        test_case._testMethodName = failure_message
        test_case.fail(failure_message)

def normalize_text(text):
    text = text.lower()
    text = re.sub(r"\\s{2,}", " ", text)
    text = re.sub(r"\\s*([,:?])\\s*", r"\\1 ", text)
    return text.strip()

def change_var(code: str, var_name: str, value: str) -> str:
    tree = ast.parse(code)
    lines = code.splitlines()
    changed = False
    # Collect all assignment nodes to modify
    assign_nodes = [
        (i, node)
        for i, node in enumerate(tree.body)
        if isinstance(node, ast.Assign)
        and any(isinstance(target, ast.Name) and target.id == var_name for target in node.targets)
    ]

    # If nothing to change, return unmodified code
    if not assign_nodes:
        return code

    # Perform replacements for all matching assignments (from last to first to not break line offsets)
    for i, node in reversed(assign_nodes):
        start_line = node.lineno - 1
        line = lines[start_line]
        indent = ' ' * (len(line) - len(line.lstrip()))
        lines[start_line] = f"{indent}{var_name} = {value}"
        next_line = len(lines)
        for next_node in tree.body[i+1:]:
            if hasattr(next_node, 'lineno'):
                next_line = next_node.lineno - 1
                break
        if next_line > start_line + 1:
            lines[start_line+1:next_line] = []
        changed = True

    return '\\n'.join(lines) if changed else code

if __name__ == "__main__":
    unittest.main()


test_main.py

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Challenge: Test Case Status Updater

解答