#!/usr/bin/env python3
"""Refuse misleading or stale source inspection, beyond a successful rebuild."""
import json
import unittest

from build_labs import ROOT
from verify_labs import verify_lab


class SourceIntegrity(unittest.TestCase):
    def setUp(self):
        self.lab = ROOT / '00-grumpy-counter'
        self.page = (self.lab / 'index.html').read_text()

    def test_current_bundle(self):
        verify_lab(self.lab, self.page)

    def test_abridged_markdown_refused(self):
        page = self.page.replace('## User interface', '## Omitted interface', 1)
        with self.assertRaises(AssertionError):
            verify_lab(self.lab, page)

    def test_executable_drift_refused(self):
        page = self.page.replace('let modulus = 37;', 'let modulus = 38;', 1)
        with self.assertRaises(AssertionError):
            verify_lab(self.lab, page)

    def test_source_omission_refused(self):
        start = self.page.index('<script id="lab-config" type="application/json">')
        content = self.page.index('>', start) + 1
        end = self.page.index('</script>', content)
        config = json.loads(self.page[content:end])
        config['sources'].pop()
        replacement = json.dumps(config).replace('<', '\\u003c')
        page = self.page[:content] + replacement + self.page[end:]
        with self.assertRaises(AssertionError):
            verify_lab(self.lab, page)

    def test_false_graph_claim_refused(self):
        page = self.page.replace('Lesson flow (illustrative)', 'Resolved Component DAG', 1)
        with self.assertRaises(AssertionError):
            verify_lab(self.lab, page)


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