
import unittest
import user_code
import ast
import re   
import importlib
import csv
import unittest
import importlib
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import user_code

class TestTask(unittest.TestCase):
    def setUp(self):
        importlib.reload(user_code)
        self.func = getattr(user_code, 'visualize_test_outcomes', None)

    def test_passed_count(self):
        test_results = {
            'a': 'passed', 'b': 'failed', 'c': 'passed', 'd': 'failed', 'e': 'passed'
        }
        called = {'called': False}
        orig_bar = plt.bar
        orig_show = plt.show
        def fake_bar(labels, counts, color=None):
            called['called'] = True
            self.labels = labels
            self.counts = counts
            self.color = color
            return None
        plt.bar = fake_bar
        plt.show = lambda: None
        if self.func:
            self.func(test_results)
            _dynamic_test(
                self,
                hasattr(self, 'counts') and self.counts[0] == 3,
                "Counts correct number of 'passed' tests (3)",
                f"Expected 3 passed, got {getattr(self, 'counts', [None, None])[0]}"
            )
        else:
            _dynamic_test(self, False, '', 'Function visualize_test_outcomes not implemented')
        plt.bar = orig_bar
        plt.show = orig_show

    def test_failed_count(self):
        test_results = {
            'a': 'failed', 'b': 'failed', 'c': 'passed', 'd': 'failed', 'e': 'passed'
        }
        called = {'called': False}
        orig_bar = plt.bar
        orig_show = plt.show
        def fake_bar(labels, counts, color=None):
            called['called'] = True
            self.labels = labels
            self.counts = counts
            self.color = color
            return None
        plt.bar = fake_bar
        plt.show = lambda: None
        if self.func:
            self.func(test_results)
            _dynamic_test(
                self,
                hasattr(self, 'counts') and self.counts[1] == 3,
                "Counts correct number of 'failed' tests (3)",
                f"Expected 3 failed, got {getattr(self, 'counts', [None, None])[1]}"
            )
        else:
            _dynamic_test(self, False, '', 'Function visualize_test_outcomes not implemented')
        plt.bar = orig_bar
        plt.show = orig_show

    def test_bar_chart_labels(self):
        test_results = {
            'x': 'passed', 'y': 'failed', 'z': 'failed'
        }
        orig_bar = plt.bar
        orig_xlabel = plt.xlabel
        orig_ylabel = plt.ylabel
        orig_title = plt.title
        orig_show = plt.show
        labels_captured = {}
        def fake_bar(labels, counts, color=None):
            labels_captured['labels'] = labels
            labels_captured['counts'] = counts
            labels_captured['color'] = color
            return None
        xlabel_text = {}
        ylabel_text = {}
        title_text = {}
        plt.bar = fake_bar
        plt.xlabel = lambda x: xlabel_text.setdefault('xlabel', x)
        plt.ylabel = lambda x: ylabel_text.setdefault('ylabel', x)
        plt.title = lambda x: title_text.setdefault('title', x)
        plt.show = lambda: None
        if self.func:
            self.func(test_results)
            _dynamic_test(
                self,
                'labels' in labels_captured and labels_captured['labels'] == ['Passed', 'Failed'],
                "Bar chart labels are ['Passed', 'Failed']",
                f"Expected labels ['Passed', 'Failed'], got {labels_captured.get('labels')}"
            )
            _dynamic_test(
                self,
                xlabel_text.get('xlabel') == 'Test Outcome',
                "X-axis labeled as 'Test Outcome'",
                f"Expected x-label 'Test Outcome', got '{xlabel_text.get('xlabel')}'"
            )
            _dynamic_test(
                self,
                ylabel_text.get('ylabel') == 'Number of Tests',
                "Y-axis labeled as 'Number of Tests'",
                f"Expected y-label 'Number of Tests', got '{ylabel_text.get('ylabel')}'"
            )
            _dynamic_test(
                self,
                title_text.get('title') == 'Test Suite Outcomes',
                "Chart title is 'Test Suite Outcomes'",
                f"Expected title 'Test Suite Outcomes', got '{title_text.get('title')}'"
            )
        else:
            _dynamic_test(self, False, '', 'Function visualize_test_outcomes not implemented')
        plt.bar = orig_bar
        plt.xlabel = orig_xlabel
        plt.ylabel = orig_ylabel
        plt.title = orig_title
        plt.show = orig_show

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: Visualize Test Suite Outcomes

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