
import unittest
import user_code
import ast
import re   
import importlib
import csv
import unittest
import importlib
import io
from contextlib import redirect_stdout

class TestTask(unittest.TestCase):
    def test_report_header_and_separator(self):
        import user_code
        importlib.reload(user_code)
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.create_summary_report(1.23, 4.56, 7.89)
        output = f.getvalue()
        header = "Summary Report"
        separator = "-" * 30
        _dynamic_test(
            self,
            header in output and separator in output,
            "Report header and separator line are present.",
            f"Missing header '{header}' or separator line in output: {output}"
        )

    def test_labels_and_alignment(self):
        import user_code
        importlib.reload(user_code)
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.create_summary_report(10.1, 2.2, 99.3)
        output = f.getvalue()
        lines = [line for line in output.splitlines() if ":" in line]
        expected_labels = ["Average Value:", "Minimum Value:", "Maximum Value:"]
        found_labels = [line.split(":")[0]+":" for line in lines]
        correct_alignment = all(line.startswith(label) for line, label in zip(lines, expected_labels))
        _dynamic_test(
            self,
            found_labels == expected_labels and correct_alignment,
            "Labels are correct and aligned consistently.",
            f"Expected labels/alignment: {expected_labels}, found: {found_labels} in lines: {lines}"
        )

    def test_two_decimal_places(self):
        import user_code
        importlib.reload(user_code)
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.create_summary_report(12.3456, 78.9, 0.1)
        output = f.getvalue()
        # Find all lines with values
        value_lines = [line for line in output.splitlines() if ":" in line]
        decimals = [line.split()[-1] for line in value_lines]
        correct_format = all(
            d.replace(".", "", 1).isdigit() and len(d.split(".")[1]) == 2
            for d in decimals if "." in d
        )
        _dynamic_test(
            self,
            correct_format,
            "All values are displayed with two decimal places.",
            f"Values are not correctly formatted to two decimals: {decimals}"
        )

    def test_uses_arguments(self):
        import user_code
        importlib.reload(user_code)
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.create_summary_report(55.5, 10.1, 99.9)
        output = f.getvalue()
        _dynamic_test(
            self,
            "55.50" in output and "10.10" in output and "99.90" in output,
            "Function uses provided arguments for average, minimum, and maximum.",
            f"Function did not use provided arguments correctly. Output: {output}"
        )

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: Create a Summary Report

Solution