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

class TestTask(unittest.TestCase):
    def test_returns_correct_summaries(self):
        import user_code
        importlib.reload(user_code)
        api_response = {
            "devices": [
                {"id": "devA", "status": "Active", "last_update": "2024-06-01T09:15:00Z"},
                {"id": "devB", "status": "Inactive", "last_update": "2024-06-01T08:50:00Z"},
                {"id": "devC", "status": "Maintenance", "last_update": "2024-06-01T07:30:00Z"}
            ]
        }
        expected = [
            "Device devA: Status=Active, Last Update=2024-06-01T09:15:00Z",
            "Device devB: Status=Inactive, Last Update=2024-06-01T08:50:00Z",
            "Device devC: Status=Maintenance, Last Update=2024-06-01T07:30:00Z"
        ]
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and result == expected,
            "Returns correct summaries for all devices.",
            f"Expected {expected}, got {result}",
        )

    def test_handles_empty_devices(self):
        import user_code
        importlib.reload(user_code)
        api_response = {"devices": []}
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 0,
            "Returns empty list when devices list is empty.",
            f"Expected empty list, got {result}",
        )

    def test_handles_missing_devices_key(self):
        import user_code
        importlib.reload(user_code)
        api_response = {}
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 0,
            "Returns empty list when devices key is missing.",
            f"Expected empty list, got {result}",
        )

    def test_handles_missing_fields(self):
        import user_code
        importlib.reload(user_code)
        api_response = {
            "devices": [
                {"status": "Active", "last_update": "2024-06-01T09:15:00Z"},
                {"id": "devB", "last_update": "2024-06-01T08:50:00Z"},
                {"id": "devC", "status": "Maintenance"}
            ]
        }
        expected = [
            "Device Unknown: Status=Active, Last Update=2024-06-01T09:15:00Z",
            "Device devB: Status=Unknown, Last Update=2024-06-01T08:50:00Z",
            "Device devC: Status=Maintenance, Last Update=Unknown"
        ]
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and result == expected,
            "Handles missing fields by substituting 'Unknown'.",
            f"Expected {expected}, got {result}",
        )

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: Simulate API Data Retrieval

Solution